Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
982
FNUS55 KRIW 171016
FWFRIW
Fire Weather Planning Forecast for Western and Central Wyoming
National Weather Service Riverton WY
416 AM MDT Sat May 17 2025
.DISCUSSION...
...Yellowstone NP and Teton dispatch areas (includes fire weather
zones 140...414...415...and 416)...
A weather system will bring scattered showers and thunderstorms
today, mainly in the afternoon and most numerous in the mountains.
Some locations could receive a wetting rain. Wind should remain
light to moderate except in and around any shower or thunderstorm.
Relative humidity will remain above critical levels. Mixing and
smoke dispersal will be generally fair to good in the afternoon.
...Cody dispatch area (includes fire weather zones 275...276...
282...283...285...286...287...288...and 289)...
A weather system will bring isolated to widely scattered showers
and thunderstorms today in the afternoon and evening, most
numerous in the western zones. Wind should remain light to moderate
except in and around any shower or thunderstorm. Relative humidity
will remain above critical levels. Mixing and smoke dispersal will
be generally good to very good in the afternoon.
...Casper dispatch area (includes fire weather zones 277...278...
279...280...281...285...289...and 300)...
A weather system will bring isolated to widely scattered showers
and thunderstorms today in the afternoon and evening, most
numerous in the southern zones zones. Wind should remain light to
moderate except in and around any shower or thunderstorm and in southern
Zone 279. Relative humidity will remain above critical levels.
Mixing and smoke dispersal range from good to excellent in the
afternoon.
...Thunderstorms imply strong gusty and erratic winds...
WYZ280-181300-
Natrona County/Casper BLM-
Including the cities of Casper and Midwest
416 AM MDT Sat May 17 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers and thunderstorms late
in the afternoon. Chance of precipitation 20
percent.
Chance of thunder...20 percent.
Max temperature.....65-70.
24 hr trend......8 degrees warmer.
Min humidity........25-31 percent.
24 hr trend......1 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then
southwest 10 to 15 mph. Gusts up to 25 mph.
Ridge top winds.....Southwest 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 15 to 20 mph.
Mixing Height.......3000-5000 ft agl until 1200, then 8400-10400 ft
agl.
Smoke dispersal.....Fair to good until 1200, then very good to
excellent.
.TONIGHT...
Sky/weather.........Partly cloudy. Slight chance of showers in the
evening. Chance of showers 20 percent.
Chance of thunder...0 percent.
Min temperature.....41-46.
24 hr trend......5 degrees warmer.
Max humidity........73-79 percent.
24 hr trend......5 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Southeast winds around 10 mph. Gusts up to 15
mph until 2400, then 25 mph.
Ridge top winds.....Southeast around 15 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....South around 15 mph.
Mixing Height.......3400-5400 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.SUNDAY...
Sky/weather.........Mostly cloudy. Slight chance of showers in the
morning, then showers and slight chance of
thunderstorms in the afternoon. Chance of
precipitation 90 percent.
Chance of thunder...20 percent.
Max temperature.....62-67.
24 hr trend......3 degrees cooler.
Min humidity........35-41 percent.
24 hr trend......8 percent wetter.
20-foot winds.......South winds 10 to 15 mph with gusts to around
30 mph.
Ridge top winds.....South 15 to 20 mph.
Chc of wetting rain.Zero percent until 1200, then 85 percent.
Transport winds.....South 15 to 20 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 5200-7200 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Showers and slight chance of thunderstorms in the
evening, then showers after midnight. Lows in the upper 30s.
Northwest winds around 15 mph.
.MONDAY...Cooler, showers. Lows in the mid 30s. Highs in the mid
40s. Northwest winds around 10 mph.
.TUESDAY...Warmer. Partly cloudy with chance of showers. Lows in
the upper 30s. Highs around 60. Northwest winds around 10 mph.
.WEDNESDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the lower 40s. Highs in the mid 60s. West
winds around 10 mph.
.THURSDAY...Mostly clear with slight chance of showers and
thunderstorms. Lows in the lower 40s. Highs in the lower 70s.
.FRIDAY...Mostly sunny. Highs in the lower 70s.
$$
WYZ283-181300-
Upper Wind River Basin/Wind River Basin-
Including the cities of Crowheart, Lander, Riverton, and Shoshoni
416 AM MDT Sat May 17 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers and thunderstorms late
in the afternoon. Chance of precipitation 20
percent.
Chance of thunder...20 percent.
Max temperature.....60-65.
24 hr trend......6 degrees warmer.
Min humidity........30-36 percent.
24 hr trend......1 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then south
around 10 mph. Gusts up to 20 mph.
Ridge top winds.....South 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......2200-4200 ft agl until 1200, then 7000-9000 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good to very
good.
.TONIGHT...
Sky/weather.........Mostly cloudy. Slight chance of showers. Chance
of showers 20 percent.
Chance of thunder...0 percent.
Min temperature.....40-45.
24 hr trend......4 degrees warmer.
Max humidity........74-80 percent.
24 hr trend......7 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......South winds around 10 mph and gusty.
Ridge top winds.....South around 15 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....South around 15 mph.
Mixing Height.......2600-4600 ft agl until 2400, then 600-800 ft
agl.
Smoke dispersal.....Poor to fair.
.SUNDAY...
Sky/weather.........Mostly cloudy. Chance of showers in the
morning, then showers and slight chance of
thunderstorms in the afternoon. Chance of
precipitation near 100 percent.
Chance of thunder...20 percent.
Max temperature.....56-61.
24 hr trend......4 degrees cooler.
Min humidity........43-49 percent.
24 hr trend......10 percent wetter.
20-foot winds.......South winds 10 to 15 mph until 1500, then west.
Gusts up to 30 mph.
Ridge top winds.....Southwest 15 to 20 mph.
Chc of wetting rain.5 percent until 1200, then 60 percent.
Transport winds.....South around 15 mph until 1200, then southwest
around 25 mph.
Mixing Height.......2400-4400 ft agl until 1200, then 5400-7400 ft
agl.
Smoke dispersal.....Fair to good until 1200, then very good.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Showers and slight chance of thunderstorms in the
evening, then showers likely after midnight. Lows in the upper
30s. Northwest winds around 15 mph.
.MONDAY...Mostly cloudy with showers likely. Lows in the mid 30s.
Highs in the lower 50s. Northwest winds around 10 mph.
.TUESDAY...Warmer. Mostly clear. Chance of showers and slight
chance of thunderstorms. Lows in the upper 30s. Highs in the
lower 60s. West winds around 10 mph.
.WEDNESDAY...Mostly clear. Lows in the lower 40s. Highs in the
upper 60s. West winds around 10 mph.
.THURSDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the lower 40s. Highs in the lower 70s.
.FRIDAY...Mostly sunny. Highs in the lower 70s.
$$
WYZ285-181300-
South Bighorn Mountains-
416 AM MDT Sat May 17 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers and thunderstorms late
in the afternoon. Chance of precipitation 20
percent.
Chance of thunder...20 percent.
Max temperature.....58-63.
24 hr trend......10 degrees warmer.
Min humidity........30-36 percent.
24 hr trend......10 percent drier.
20-foot winds.......Southwest winds around 10 mph with higher
gusts.
Ridge top winds.....Southwest around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 6200-8200 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good to very
good.
.TONIGHT...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Slight chance of showers in the evening. Chance
of showers 20 percent.
Chance of thunder...0 percent.
Min temperature.....41-46.
24 hr trend......5 degrees warmer.
Max humidity........69-75 percent.
24 hr trend......3 percent drier.
Humidity recovery...Good.
20-foot winds.......Southeast winds 10 to 15 mph with gusts to
around 25 mph.
Ridge top winds.....Southeast 15 to 20 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....South 15 to 20 mph.
Mixing Height.......2600-4600 ft agl until 2400, then 200-600 ft
agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Mostly cloudy. Chance of showers in the
morning, then showers and slight chance of
thunderstorms in the afternoon. Chance of
precipitation 90 percent.
Chance of thunder...20 percent.
Max temperature.....56-61.
24 hr trend......2 degrees cooler.
Min humidity........42-48 percent.
24 hr trend......12 percent wetter.
20-foot winds.......South winds 15 to 20 mph with gusts to around
30 mph.
Ridge top winds.....South 20 to 25 mph.
Chc of wetting rain.Zero percent until 1200, then 90 percent.
Transport winds.....South 20 to 25 mph.
Mixing Height.......1800-3800 ft agl until 1200, then 4400-6400 ft
agl.
Smoke dispersal.....Fair to good until 1200, then good to very
good.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Showers and slight chance of thunderstorms in the
evening, then showers and snow showers after midnight. Lows in
the mid 30s. Northwest winds around 15 mph.
.MONDAY...Colder. Showers and snow showers. Lows in the mid 30s.
Highs in the lower 40s. Northwest winds around 15 mph.
.TUESDAY...Warmer. Partly cloudy with chance of showers, snow
showers and slight chance of thunderstorms. Lows in the upper
30s. Highs in the mid 50s. Northwest winds around 10 mph.
.WEDNESDAY...Mostly clear. Chance of showers and slight chance of
thunderstorms. Lows in the lower 40s. Highs in the upper 50s.
West winds around 10 mph.
.THURSDAY THROUGH FRIDAY...Mostly clear with slight chance of
showers and thunderstorms. Lows around 40. Highs in the mid 60s.
$$
WYZ281-181300-
Johnson County/Casper BLM-
Including the cities of Buffalo and Kaycee
416 AM MDT Sat May 17 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....62-67.
24 hr trend......11 degrees warmer.
Min humidity........32-38 percent.
24 hr trend......14 percent drier.
20-foot winds.......South winds around 10 mph and gusty.
Ridge top winds.....South around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 15 mph.
Mixing Height.......2800-4800 ft agl until 1200, then 8600-10600 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....43-48.
24 hr trend......5 degrees warmer.
Max humidity........73-79 percent.
24 hr trend......4 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Southeast winds 10 to 15 mph with gusts to
around 25 mph.
Ridge top winds.....Southeast around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 15 mph.
Mixing Height.......4000-6000 ft agl until 2400, then 600-800 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.SUNDAY...
Sky/weather.........Mostly cloudy. Slight chance of showers in the
morning, then showers and slight chance of
thunderstorms in the afternoon. Chance of
precipitation 90 percent.
Chance of thunder...20 percent.
Max temperature.....62-67.
24 hr trend......3 degrees cooler.
Min humidity........40-46 percent.
24 hr trend......11 percent wetter.
20-foot winds.......South winds 15 to 20 mph with gusts to around
30 mph.
Ridge top winds.....South 20 to 25 mph.
Chc of wetting rain.Zero percent until 1200, then 85 percent.
Transport winds.....South 20 to 25 mph.
Mixing Height.......1600-3600 ft agl until 1200, then 4000-6000 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good to very
good.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Showers and slight chance of thunderstorms in the
evening, then showers after midnight. Lows around 40. Northeast
winds around 15 mph.
.MONDAY...Cooler, showers. Lows in the upper 30s. Highs in the
mid 40s. North winds around 15 mph.
.TUESDAY...Warmer. Partly cloudy with chance of showers and
slight chance of thunderstorms. Lows in the upper 30s. Highs in
the upper 50s. North winds around 10 mph.
.WEDNESDAY...Mostly clear. Chance of showers and slight chance of
thunderstorms. Lows in the lower 40s. Highs in the mid 60s.
Northwest winds around 10 mph.
.THURSDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the lower 40s. Highs around 70.
.FRIDAY...Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Highs in the upper 60s.
$$
WYZ282-181300-
South Bighorn Basin/Worland BLM-
Including the cities of Ten Sleep, Thermopolis, and Worland
416 AM MDT Sat May 17 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Chance of thunder...0 percent.
Max temperature.....61-66.
24 hr trend......10 degrees warmer.
Min humidity........26-32 percent.
24 hr trend......11 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph. Gusts up to 15 mph.
Ridge top winds.....South around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph.
Mixing Height.......2200-4200 ft agl until 1200, then 6800-8800 ft
agl.
Smoke dispersal.....Fair to good.
.TONIGHT...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Slight chance of showers in the late evening
and early morning. Chance of showers 20
percent.
Chance of thunder...0 percent.
Min temperature.....40-45.
24 hr trend......5 degrees warmer.
Max humidity........69-75 percent.
24 hr trend......5 percent drier.
Humidity recovery...Good.
20-foot winds.......Southeast winds around 10 mph and gusty.
Ridge top winds.....Southeast around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 15 mph.
Mixing Height.......3200-5200 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Poor to fair.
.SUNDAY...
Sky/weather.........Mostly cloudy. Chance of showers in the
morning, then showers and slight chance of
thunderstorms in the afternoon. Chance of
precipitation near 100 percent.
Chance of thunder...20 percent.
Max temperature.....59-64.
24 hr trend......3 degrees cooler.
Min humidity........43-49 percent.
24 hr trend......14 percent wetter.
20-foot winds.......South winds 10 to 15 mph until 1500, then west.
Gusts up to 25 mph.
Ridge top winds.....South 15 to 20 mph.
Chc of wetting rain.Zero percent until 1200, then 85 percent.
Transport winds.....South 15 to 20 mph.
Mixing Height.......2400-4400 ft agl until 1200, then 5400-7400 ft
agl.
Smoke dispersal.....Fair to good until 1200, then very good.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Showers and slight chance of thunderstorms in the
evening, then showers after midnight. Lows around 40. Northwest
winds around 15 mph.
.MONDAY...Cooler. Mostly cloudy with showers likely. Lows in the
upper 30s. Highs in the lower 50s. Northwest winds around 15 mph.
.TUESDAY...Warmer. Partly cloudy with chance of showers and
slight chance of thunderstorms. Lows in the lower 40s. Highs in
the lower 60s. Winds generally less than 10 mph.
.WEDNESDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the upper 60s. Winds
generally less than 10 mph.
.THURSDAY THROUGH FRIDAY...Mostly clear with slight chance of
showers and thunderstorms. Lows in the lower 40s. Highs in the
lower 70s.
$$
WYZ275-181300-
North Bighorn Basin/Worland BLM-
Including the cities of Greybull, Lovell, and Powell
416 AM MDT Sat May 17 2025
.TODAY...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms early in the afternoon. Slight
chance of showers late in the afternoon. Chance
of precipitation 20 percent.
Chance of thunder...10 percent.
Max temperature.....57-62.
24 hr trend......7 degrees warmer.
Min humidity........30-36 percent.
24 hr trend......8 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southeast around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Southeast 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South 10 to 15 mph.
Mixing Height.......2200-4200 ft agl until 1200, then 6800-8800 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good.
.TONIGHT...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Slight chance of showers after midnight. Chance
of showers 20 percent.
Chance of thunder...0 percent.
Min temperature.....40-45.
24 hr trend......3 degrees warmer.
Max humidity........68-74 percent.
24 hr trend......6 percent drier.
Humidity recovery...Good.
20-foot winds.......East winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph until 2400, then
south around 10 mph. Gusts up to 15 mph.
Ridge top winds.....East around 10 mph until 2400, then south.
Chc of wetting rain.Zero percent.
Transport winds.....Southeast 10 to 15 mph.
Mixing Height.......3000-5000 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Poor to fair.
.SUNDAY...
Sky/weather.........Mostly cloudy. Chance of showers in the
morning, then showers and slight chance of
thunderstorms in the afternoon. Chance of
precipitation near 100 percent.
Chance of thunder...20 percent.
Max temperature.....57-62.
24 hr trend......3 degrees cooler.
Min humidity........45-51 percent.
24 hr trend......17 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then south
around 10 mph with gusts to around 30 mph until
1500, then west with gusts to around 30 mph.
Ridge top winds.....South around 15 mph until 1200, then west.
Chc of wetting rain.Zero percent until 1200, then 90 percent.
Transport winds.....South 15 to 20 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 4600-6600 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good to very
good.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Showers and slight chance of thunderstorms in the
evening, then showers likely after midnight. Lows in the lower
40s. Northwest winds around 20 mph.
.MONDAY...Mostly cloudy with showers likely. Lows in the upper
30s. Highs in the lower 50s. Northwest winds around 15 mph.
.TUESDAY...Warmer. Partly cloudy with chance of showers and
slight chance of thunderstorms. Lows in the lower 40s. Highs in
the mid 60s. Winds generally less than 10 mph.
.WEDNESDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the upper 60s. Winds
generally less than 10 mph.
.THURSDAY...Partly cloudy with chance of showers and slight
chance of thunderstorms. Lows in the mid 40s. Highs in the lower
70s.
.FRIDAY...Mostly sunny. Slight chance of showers in the morning,
then slight chance of showers and thunderstorms in the afternoon.
Highs in the upper 60s.
$$
WYZ276-181300-
Cody Foothills-
Including the cities of Clark, Cody, and Meeteetse
416 AM MDT Sat May 17 2025
.TODAY...
Sky/weather.........Partly cloudy. Slight chance of showers and
thunderstorms early in the afternoon. Chance of
precipitation 20 percent.
Chance of thunder...20 percent.
Max temperature.....58-63.
24 hr trend......8 degrees warmer.
Min humidity........34-40 percent.
24 hr trend......10 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southeast around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Southwest around 10 mph until 1200, then
southeast.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......2600-4600 ft agl until 1200, then 6200-8000 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good.
.TONIGHT...
Sky/weather.........Mostly cloudy. Slight chance of showers in the
evening. Chance of showers after midnight, then
slight chance of showers early in the morning.
Chance of showers 50 percent.
Chance of thunder...0 percent.
Min temperature.....39-44.
24 hr trend......4 degrees warmer.
Max humidity........69-75 percent.
24 hr trend......7 percent drier.
Humidity recovery...Good.
20-foot winds.......Southeast winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....South around 10 mph.
Chc of wetting rain.7 percent.
Transport winds.....South around 10 mph.
Mixing Height.......2400-4400 ft agl until 2400, then 600-1000 ft
agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Cloudy. Chance of showers in the morning, then
showers and slight chance of thunderstorms in
the afternoon. Chance of precipitation near 100
percent.
Chance of thunder...20 percent.
Max temperature.....53-58.
24 hr trend......6 degrees cooler.
Min humidity........52-58 percent.
24 hr trend......20 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then north
10 to 15 mph with gusts to around 25 mph.
Ridge top winds.....Northwest around 10 mph until 1200, then north
around 20 mph.
Chc of wetting rain.15 percent until 1200, then 95 percent.
Transport winds.....South around 10 mph until 1200, then southwest
around 20 mph.
Mixing Height.......2600-4600 ft agl.
Smoke dispersal.....Fair to good.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Cloudy. Showers and slight chance of
thunderstorms in the evening, then chance of showers and snow
showers after midnight. Lows in the upper 30s. Northwest winds
around 15 mph.
.MONDAY...Mostly cloudy with showers and snow showers likely.
Lows in the upper 30s. Highs around 50. Northwest winds around
15 mph.
.TUESDAY...Warmer. Partly cloudy with chance of showers and
slight chance of thunderstorms. Lows around 40. Highs in the
lower 60s. West winds around 10 mph.
.WEDNESDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the lower 40s. Highs in the mid 60s. West
winds around 10 mph.
.THURSDAY...Partly cloudy with chance of showers and slight
chance of thunderstorms. Lows in the lower 40s. Highs in the mid
60s.
.FRIDAY...Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Highs in the mid 60s.
$$
WYZ287-181300-
Owl Creek Mountains-
416 AM MDT Sat May 17 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers and thunderstorms late
in the afternoon. Chance of precipitation 20
percent.
Chance of thunder...20 percent.
Max temperature.....56-61.
24 hr trend......11 degrees warmer.
Min humidity........32-38 percent.
24 hr trend......18 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southeast around 10 mph. Gusts up to 15 mph.
Ridge top winds.....South 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 5800-7800 ft
agl.
Smoke dispersal.....Fair to good.
.TONIGHT...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Slight chance of showers through the night.
Chance of showers 20 percent.
Chance of thunder...0 percent.
Min temperature.....40-45.
24 hr trend......5 degrees warmer.
Max humidity........70-76 percent.
24 hr trend......1 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......South winds around 10 mph with gusts to around
15 mph.
Ridge top winds.....South 10 to 15 mph.
Chc of wetting rain.5 percent.
Transport winds.....South 10 to 15 mph.
Mixing Height.......2400-4400 ft agl until 2400, then 200-800 ft
agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Mostly cloudy. Chance of showers in the
morning, then showers and slight chance of
thunderstorms in the afternoon. Chance of
precipitation near 100 percent.
Chance of thunder...20 percent.
Max temperature.....54-59.
24 hr trend......4 degrees cooler.
Min humidity........48-54 percent.
24 hr trend......15 percent wetter.
20-foot winds.......South winds 10 to 15 mph until 1500, then west.
Gusts up to 30 mph.
Ridge top winds.....Southwest 15 to 20 mph.
Chc of wetting rain.5 percent until 1200, then 90 percent.
Transport winds.....South 15 to 20 mph.
Mixing Height.......1800-3800 ft agl until 1200, then 4400-6400 ft
agl.
Smoke dispersal.....Good.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Showers and slight chance of thunderstorms in the
evening, then showers and snow showers likely after midnight.
Lows in the upper 30s. North winds around 15 mph.
.MONDAY...Cooler. Mostly cloudy with showers and snow showers
likely. Lows in the upper 30s. Highs in the mid 40s. North winds
around 15 mph.
.TUESDAY...Warmer. Mostly clear with chance of showers and slight
chance of thunderstorms. Lows around 40. Highs in the upper 50s.
Northwest winds around 10 mph.
.WEDNESDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the lower 40s. Highs in the lower 60s.
West winds around 10 mph.
.THURSDAY THROUGH FRIDAY...Mostly clear with slight chance of
showers and thunderstorms. Lows in the lower 40s. Highs in the
mid 60s.
$$
WYZ286-181300-
Absaroka Mountains/North Shoshone NF-
Including the city of Pahaska
416 AM MDT Sat May 17 2025
.TODAY...
Sky/weather.........Partly cloudy. Chance of showers, snow showers
and slight chance of thunderstorms in the
afternoon. Chance of precipitation 50 percent.
Chance of thunder...20 percent.
Max temperature.....49-54.
24 hr trend......4 degrees warmer.
Min humidity........46-52 percent.
24 hr trend......1 percent wetter.
20-foot winds.......Southwest winds around 10 mph until 1500, then
south. Gusts up to 15 mph.
Ridge top winds.....West around 15 mph until 1200, then south.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Southwest around 15 mph.
Mixing Height.......1800-3800 ft agl until 1200, then 4200-6200 ft
agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Mostly cloudy. Slight chance of thunderstorms
early in the evening. Chance of showers and
snow showers through the night. Chance of
precipitation 50 percent.
Chance of thunder...20 percent.
Min temperature.....34-39.
24 hr trend......3 degrees warmer.
Max humidity........81-87 percent.
24 hr trend......2 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Southeast winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....Southeast around 15 mph until 2400, then
southwest.
Chc of wetting rain.40 percent until 2400, then 30 percent.
Transport winds.....South around 10 mph.
Mixing Height.......1400-3400 ft agl until 2400, then 400-1200 ft
agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Mostly cloudy. Showers and snow showers likely
in the morning, then showers, snow showers and
slight chance of thunderstorms in the
afternoon. Snow accumulation up to 2 inches.
Chance of precipitation near 100 percent.
Chance of thunder...20 percent.
Max temperature.....44-49.
24 hr trend......5 degrees cooler.
Min humidity........64-70 percent.
24 hr trend......23 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then west
10 to 15 mph with gusts to around 25 mph.
Ridge top winds.....West 10 to 15 mph.
Chc of wetting rain.50 percent until 1200, then 100 percent.
Transport winds.....Southwest around 15 mph.
Mixing Height.......1400-3400 ft agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Cloudy. Snow showers and showers in the evening,
then chance of snow showers after midnight. Lows around 30.
Northwest winds around 10 mph.
.MONDAY...Mostly cloudy with snow showers and showers likely.
Lows in the lower 30s. Highs in the lower 40s. Northwest winds
around 10 mph.
.TUESDAY...Partly cloudy with chance of showers, snow showers and
slight chance of thunderstorms. Lows in the lower 30s. Highs in
the upper 40s. West winds around 10 mph.
.WEDNESDAY...Partly cloudy. Slight chance of showers,
thunderstorms and snow showers. Lows in the mid 30s. Highs in the
lower 50s. West winds around 10 mph.
.THURSDAY...Partly cloudy with chance of showers, snow showers
and slight chance of thunderstorms. Lows in the lower 30s. Highs
in the mid 50s.
.FRIDAY...Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Highs in the mid 50s.
$$
WYZ140-181300-
Yellowstone National Park-
Including the cities of Lake, Mammoth, and Old Faithful
416 AM MDT Sat May 17 2025
.TODAY...
Sky/weather.........Partly cloudy. Slight chance of showers early
in the afternoon. Slight chance of
thunderstorms early in the afternoon. Chance of
showers late in the afternoon. Chance of
precipitation 50 percent.
Chance of thunder...20 percent.
Max temperature.....50-55.
24 hr trend......9 degrees warmer.
Min humidity........44-50 percent.
24 hr trend......11 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then south
around 10 mph. Gusts up to 15 mph.
Ridge top winds.....South 10 to 15 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Southwest around 15 mph.
Mixing Height.......1600-3600 ft agl until 1200, then 4200-5800 ft
agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Mostly cloudy. Showers, snow showers likely and
slight chance of thunderstorms in the evening,
then showers and snow showers after midnight.
Little or no snow accumulation. Chance of
precipitation 90 percent.
Chance of thunder...20 percent.
Min temperature.....33-38.
24 hr trend......1 degree warmer.
Max humidity........87-93 percent.
24 hr trend......4 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Downslope/downvalley 4-7 mph until 2400, then
south around 10 mph until 0300, then
downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....South around 10 mph.
Chc of wetting rain.60 percent until 2400, then 70 percent.
Transport winds.....South 10 to 15 mph.
Mixing Height.......1600-3600 ft agl until 2400, then 400-1000 ft
agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Cloudy. Showers and snow showers through the
day. Slight chance of thunderstorms in the
afternoon. Snow accumulation up to 2 inches.
Chance of precipitation near 100 percent.
Chance of thunder...20 percent.
Max temperature.....42-47.
24 hr trend......9 degrees cooler.
Min humidity........71-77 percent.
24 hr trend......32 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Southwest 10 to 15 mph.
Chc of wetting rain.90 percent until 1200, then 100 percent.
Transport winds.....South around 10 mph until 1200, then west.
Mixing Height.......400-2400 ft agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Cloudy. Snow showers and showers in the evening,
then chance of snow showers after midnight. Lows in the mid 20s.
Winds generally less than 10 mph.
.MONDAY...Mostly cloudy. Chance of snow showers and showers. Lows
in the upper 20s. Highs in the mid 40s. Winds generally less than
10 mph.
.TUESDAY...Partly cloudy with chance of showers, snow showers and
slight chance of thunderstorms. Lows in the upper 20s. Highs in
the upper 40s. Southwest winds around 10 mph.
.WEDNESDAY...Partly cloudy with chance of showers and snow
showers. Lows in the lower 30s. Highs in the lower 50s. Southwest
winds around 10 mph.
.THURSDAY...Partly cloudy with chance of showers, snow showers
and slight chance of thunderstorms. Lows in the lower 30s. Highs
in the mid 50s.
.FRIDAY...Mostly sunny. Slight chance of showers and
thunderstorms in the afternoon. Highs in the upper 50s.
$$
WYZ415-181300-
North Zone Bridger Teton NF and Grand Teton NP-
Including the cities of Jackson and Moran
416 AM MDT Sat May 17 2025
.TODAY...
Sky/weather.........Partly cloudy. Chance of showers and slight
chance of thunderstorms in the afternoon.
Chance of precipitation 50 percent.
Chance of thunder...20 percent.
Max temperature.....49-54.
24 hr trend......8 degrees warmer.
Min humidity........48-54 percent.
24 hr trend......1 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then south
around 10 mph. Gusts up to 15 mph.
Ridge top winds.....South 10 to 15 mph.
Chc of wetting rain.Zero percent until 1200, then 20 percent.
Transport winds.....South 10 to 15 mph.
Mixing Height.......1600-3600 ft agl until 1200, then 3600-5600 ft
agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Mostly cloudy. Showers, snow showers likely and
slight chance of thunderstorms in the evening,
then showers and snow showers after midnight.
Snow accumulation up to 1 inch. Chance of
precipitation near 100 percent.
Chance of thunder...20 percent.
Min temperature.....30-35.
24 hr trend......1 degree warmer.
Max humidity........89-95 percent.
24 hr trend......4 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......South winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph until 2400, then
south around 10 mph until 0300, then
downslope/downvalley 4-7 mph. Gusts up to 15
mph.
Ridge top winds.....South around 10 mph.
Chc of wetting rain.65 percent until 2400, then 85 percent.
Transport winds.....South 10 to 15 mph.
Mixing Height.......600-2600 ft agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Cloudy. Showers and snow showers through the
day. Slight chance of thunderstorms in the
afternoon. Snow accumulation up to 3 inches.
Chance of precipitation near 100 percent.
Chance of thunder...20 percent.
Max temperature.....39-44.
24 hr trend......11 degrees cooler.
Min humidity........71-77 percent.
24 hr trend......29 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Southwest 10 to 15 mph.
Chc of wetting rain.97 percent.
Transport winds.....South around 15 mph until 1200, then west.
Mixing Height.......800-2800 ft agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Cloudy. Snow showers with showers likely in the
evening, then chance of snow showers after midnight. Lows in the
mid 20s. West winds around 10 mph.
.MONDAY...Mostly cloudy. Chance of snow showers and showers. Lows
in the upper 20s. Highs in the lower 40s. West winds around
10 mph.
.TUESDAY...Partly cloudy with chance of showers, snow showers and
slight chance of thunderstorms. Lows in the upper 20s. Highs in
the upper 40s. Southwest winds around 10 mph.
.WEDNESDAY...Mostly clear. Slight chance of showers and snow
showers. Lows in the lower 30s. Highs in the lower 50s. Southwest
winds around 10 mph.
.THURSDAY...Mostly clear with chance of showers, slight chance of
thunderstorms and snow showers. Lows in the lower 30s. Highs in
the mid 50s.
.FRIDAY...Mostly sunny. Slight chance of showers in the
afternoon. Highs in the upper 50s.
$$
WYZ416-181300-
West Wind River Mountains/East Zone Bridger Teton NF-
416 AM MDT Sat May 17 2025
.TODAY...
Sky/weather.........Partly cloudy. Slight chance of showers and
snow showers early in the afternoon. Slight
chance of thunderstorms in the afternoon.
Chance of showers and snow showers in the
afternoon. Chance of precipitation 50 percent.
Chance of thunder...20 percent.
Max temperature.....45-50.
24 hr trend......4 degrees warmer.
Min humidity........49-55 percent.
24 hr trend......7 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then south
around 10 mph. Gusts up to 20 mph.
Ridge top winds.....South around 15 mph.
Chc of wetting rain.Zero percent until 1200, then 25 percent.
Transport winds.....Southwest around 15 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 3200-5200 ft
agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Mostly cloudy. Showers, snow showers likely and
slight chance of thunderstorms in the evening,
then showers and snow showers after midnight.
Snow accumulation up to 2 inches. Chance of
precipitation 90 percent.
Chance of thunder...20 percent.
Min temperature.....30-35.
24 hr trend......2 degrees warmer.
Max humidity........87-93 percent.
24 hr trend......4 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......South winds around 10 mph and gusty.
Ridge top winds.....South around 15 mph.
Chc of wetting rain.60 percent until 2400, then 75 percent.
Transport winds.....South around 15 mph.
Mixing Height.......600-2600 ft agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Cloudy. Snow showers and showers through the
day. Slight chance of thunderstorms in the
afternoon. Snow accumulation up to 3 inches.
Chance of precipitation near 100 percent.
Chance of thunder...20 percent.
Max temperature.....39-44.
24 hr trend......6 degrees cooler.
Min humidity........66-72 percent.
24 hr trend......20 percent wetter.
20-foot winds.......Southwest winds 10 to 15 mph until 1500, then
west. Gusts up to 25 mph.
Ridge top winds.....Southwest 15 to 20 mph.
Chc of wetting rain.92 percent.
Transport winds.....South around 15 mph until 1200, then west.
Mixing Height.......800-2800 ft agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Cloudy. Snow showers likely in the evening, then
chance of snow showers after midnight. Lows in the mid 20s.
Northwest winds around 10 mph.
.MONDAY...Mostly cloudy. Chance of snow showers and showers. Lows
in the mid 20s. Highs in the lower 40s. Northwest winds around
10 mph.
.TUESDAY...Mostly clear with chance of showers, snow showers and
slight chance of thunderstorms. Lows in the upper 20s. Highs in
the upper 40s. West winds around 10 mph.
.WEDNESDAY...Mostly clear. Lows in the lower 30s. Highs in the
lower 50s. West winds around 10 mph.
.THURSDAY...Mostly clear. Slight chance of showers, thunderstorms
and snow showers. Lows in the lower 30s. Highs in the mid 50s.
.FRIDAY...Mostly sunny. Highs in the upper 50s.
$$
WYZ288-181300-
East Wind River Mountains/South Shoshone NF-
Including the cities of Dubois and South Pass
416 AM MDT Sat May 17 2025
.TODAY...
Sky/weather.........Partly cloudy. Chance of showers, snow showers
and slight chance of thunderstorms in the
afternoon. Chance of precipitation 50 percent.
Chance of thunder...20 percent.
Max temperature.....51-56.
24 hr trend......4 degrees warmer.
Min humidity........43-49 percent.
24 hr trend......5 percent wetter.
20-foot winds.......Southwest winds 10 to 15 mph with gusts to
around 25 mph.
Ridge top winds.....Southwest 15 to 20 mph.
Chc of wetting rain.Zero percent until 1200, then 10 percent.
Transport winds.....Southwest 15 to 20 mph.
Mixing Height.......1800-3800 ft agl until 1200, then 4600-6600 ft
agl.
Smoke dispersal.....Fair to good.
.TONIGHT...
Sky/weather.........Mostly cloudy. Snow showers likely and slight
chance of thunderstorms in the evening. Chance
of showers through the night. Snow showers
after midnight. Snow accumulation up to 1 inch.
Chance of precipitation 90 percent.
Chance of thunder...20 percent.
Min temperature.....33-38.
24 hr trend......3 degrees warmer.
Max humidity........79-85 percent.
24 hr trend......7 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Southwest winds around 10 mph with gusts to
around 25 mph.
Ridge top winds.....Southwest around 15 mph.
Chc of wetting rain.27 percent.
Transport winds.....Southwest around 15 mph.
Mixing Height.......1200-3200 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Mostly cloudy. Snow showers in the morning.
Showers likely in the morning, then showers,
snow showers and slight chance of thunderstorms
in the afternoon. Snow accumulation up to 2
inches. Chance of precipitation near 100
percent.
Chance of thunder...20 percent.
Max temperature.....45-50.
24 hr trend......5 degrees cooler.
Min humidity........58-64 percent.
24 hr trend......15 percent wetter.
20-foot winds.......Southwest winds 10 to 15 mph until 1500, then
west around 20 mph. Gusts up to 30 mph.
Ridge top winds.....Southwest 15 to 20 mph.
Chc of wetting rain.45 percent until 1200, then 85 percent.
Transport winds.....Southwest 20 to 25 mph.
Mixing Height.......1800-3800 ft agl.
Smoke dispersal.....Fair to good.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Snow showers and showers likely in the evening,
then snow showers likely after midnight. Lows in the upper 20s.
West winds around 10 mph.
.MONDAY...Mostly cloudy. Snow showers and showers likely. Lows
around 30. Highs in the lower 40s. Northwest winds around 10 mph.
.TUESDAY...Mostly clear. Chance of showers, snow showers and
slight chance of thunderstorms. Lows in the lower 30s. Highs in
the lower 50s. West winds around 15 mph.
.WEDNESDAY...Mostly clear. Lows in the upper 30s. Highs in the
mid 50s. West winds around 10 mph.
.THURSDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the mid 30s. Highs in the upper 50s.
.FRIDAY...Mostly sunny. Slight chance of showers in the
afternoon. Highs in the lower 60s.
$$
WYZ414-181300-
Salt and Wyoming Ranges/West Zone Bridger Teton NF-
Including the city of Afton
416 AM MDT Sat May 17 2025
.TODAY...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Chance of showers in the morning. Slight chance
of snow showers through the day. Showers and
slight chance of thunderstorms in the
afternoon. No snow accumulation. Chance of
precipitation 80 percent.
Chance of thunder...20 percent.
Max temperature.....49-54.
24 hr trend......7 degrees warmer.
Min humidity........51-57 percent.
24 hr trend......10 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then south
around 10 mph. Gusts up to 20 mph.
Ridge top winds.....South 10 to 15 mph.
Chc of wetting rain.Zero percent until 1200, then 45 percent.
Transport winds.....South 10 to 15 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 3400-5400 ft
agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Mostly cloudy. Showers likely and chance of
thunderstorms early in the evening, then
showers in the late evening and overnight. Snow
showers late in the evening. Snow accumulation
up to 1 inch. Chance of precipitation 90
percent.
Chance of thunder...30 percent.
Min temperature.....30-35.
24 hr trend......1 degree warmer.
Max humidity........89-95 percent.
24 hr trend......7 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......South winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph until 2400, then
southwest around 10 mph. Gusts up to 15 mph.
Ridge top winds.....South 10 to 15 mph.
Chc of wetting rain.70 percent until 2400, then 85 percent.
Transport winds.....South around 15 mph.
Mixing Height.......1000-3000 ft agl until 2400, then 400-1000 ft
agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Cloudy. Showers and snow showers through the
day. Slight chance of thunderstorms in the
afternoon. Snow accumulation up to 4 inches.
Chance of precipitation near 100 percent.
Chance of thunder...20 percent.
Max temperature.....37-42.
24 hr trend......12 degrees cooler.
Min humidity........71-77 percent.
24 hr trend......22 percent wetter.
20-foot winds.......West winds 10 to 15 mph with gusts to around 30
mph.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.95 percent until 1200, then 85 percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......600-2600 ft agl.
Smoke dispersal.....Poor.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Mostly cloudy. Snow showers and showers likely in
the evening, then chance of snow showers after midnight. Lows in
the mid 20s. West winds around 10 mph.
.MONDAY...Partly cloudy. Chance of snow showers and showers. Lows
in the upper 20s. Highs in the lower 40s. Northwest winds around
10 mph.
.TUESDAY...Mostly clear. Chance of showers, snow showers and
slight chance of thunderstorms. Lows in the lower 30s. Highs
around 50. West winds around 10 mph.
.WEDNESDAY...Mostly clear. Lows in the mid 30s. Highs in the mid
50s. Southwest winds around 10 mph.
.THURSDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the mid 30s. Highs in the upper 50s.
.FRIDAY...Mostly sunny. Highs in the lower 60s.
$$
WYZ278-181300-
Upper Green River Basin/Rock Springs BLM-
Including the cities of Big Piney, Farson, and Pinedale
416 AM MDT Sat May 17 2025
.TODAY...
Sky/weather.........Partly cloudy. Showers likely and slight chance
of thunderstorms in the afternoon. Chance of
precipitation 70 percent.
Chance of thunder...20 percent.
Max temperature.....52-57.
24 hr trend......5 degrees warmer.
Min humidity........45-51 percent.
24 hr trend......12 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then south
around 10 mph with gusts to around 25 mph.
Ridge top winds.....South 10 to 15 mph.
Chc of wetting rain.Zero percent until 1200, then 30 percent.
Transport winds.....South 10 to 15 mph.
Mixing Height.......1800-3800 ft agl until 1200, then 4600-6600 ft
agl.
Smoke dispersal.....Fair to good.
.TONIGHT...
Sky/weather.........Mostly cloudy. Slight chance of thunderstorms
early in the evening. Showers likely in the
evening, then chance of showers after midnight.
Chance of precipitation 70 percent.
Chance of thunder...20 percent.
Min temperature.....33-38.
24 hr trend......4 degrees warmer.
Max humidity........86-92 percent.
24 hr trend......5 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......South winds around 10 mph until 2400, then
downslope/downvalley 4-7 mph until 0300, then
south around 10 mph. Gusts up to 20 mph.
Ridge top winds.....South 10 to 15 mph.
Chc of wetting rain.45 percent until 2400, then 25 percent.
Transport winds.....South 10 to 15 mph.
Mixing Height.......1200-3200 ft agl until 2400, then 600-800 ft
agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Cloudy. Showers through the day. Slight chance
of thunderstorms in the afternoon. Snow showers
in the afternoon. No snow accumulation. Chance
of precipitation near 100 percent.
Chance of thunder...20 percent.
Max temperature.....44-49.
24 hr trend......8 degrees cooler.
Min humidity........58-64 percent.
24 hr trend......13 percent wetter.
20-foot winds.......Southwest winds 10 to 15 mph until 1500, then
west around 20 mph. Gusts up to 30 mph.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.75 percent until 1200, then 60 percent.
Transport winds.....South around 15 mph until 1200, then west.
Mixing Height.......1200-3200 ft agl until 1200, then 3200-4200 ft
agl.
Smoke dispersal.....Fair to good.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Mostly cloudy. Chance of showers and snow showers
in the evening, then chance of snow showers after midnight. Lows
in the upper 20s. Northwest winds around 15 mph.
.MONDAY...Partly cloudy with chance of showers and snow showers.
Lows in the upper 20s. Highs in the lower 50s. Northwest winds
around 15 mph.
.TUESDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the lower 30s. Highs in the upper 50s.
West winds around 10 mph.
.WEDNESDAY...Mostly clear. Lows in the mid 30s. Highs in the mid
60s. West winds around 10 mph.
.THURSDAY THROUGH FRIDAY...Mostly clear. Lows in the mid 30s.
Highs 66 to 71.
$$
WYZ277-181300-
Lincoln and Uinta Counties/Lower Elevations-
Including the cities of Evanston, Fort Bridger, and Kemmerer
416 AM MDT Sat May 17 2025
.TODAY...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Chance of showers in the morning, then showers
likely and slight chance of thunderstorms in
the afternoon. Chance of precipitation 70
percent.
Chance of thunder...20 percent.
Max temperature.....53-58.
24 hr trend......8 degrees warmer.
Min humidity........47-53 percent.
24 hr trend......8 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southwest around 10 mph with gusts to around 25
mph.
Ridge top winds.....South 10 to 15 mph.
Chc of wetting rain.Zero percent until 1200, then 45 percent.
Transport winds.....South around 10 mph until 1200, then southwest
around 20 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 4400-6400 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.TONIGHT...
Sky/weather.........Mostly cloudy. Chance of thunderstorms early in
the evening. Showers likely through the night.
Chance of precipitation 70 percent.
Chance of thunder...30 percent.
Min temperature.....32-37.
24 hr trend......1 degree warmer.
Max humidity........88-94 percent.
24 hr trend......9 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Southwest winds around 10 mph and gusty.
Ridge top winds.....Southwest around 15 mph.
Chc of wetting rain.42 percent.
Transport winds.....South around 15 mph.
Mixing Height.......1800-3800 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Poor to fair.
.SUNDAY...
Sky/weather.........Mostly cloudy. Showers through the day. Snow
showers. Slight chance of thunderstorms in the
afternoon. Little or no snow accumulation.
Chance of precipitation near 100 percent.
Chance of thunder...20 percent.
Max temperature.....43-48.
24 hr trend......11 degrees cooler.
Min humidity........60-66 percent.
24 hr trend......14 percent wetter.
20-foot winds.......West winds 10 to 15 mph until 1500, then around
20 mph. Gusts up to 30 mph.
Ridge top winds.....West around 15 mph until 1200, then around 25
mph.
Chc of wetting rain.85 percent until 1200, then 35 percent.
Transport winds.....West around 15 mph until 1200, then northwest
around 25 mph.
Mixing Height.......1200-3200 ft agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Partly cloudy. Chance of snow showers and slight
chance of showers in the evening, then slight chance of snow
showers after midnight. Lows in the mid 20s. West winds around
15 mph.
.MONDAY...Partly cloudy with slight chance of showers and snow
showers. Lows in the upper 20s. Highs in the upper 40s. West
winds around 15 mph.
.TUESDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the lower 30s. Highs in the upper 50s.
West winds around 10 mph.
.WEDNESDAY...Mostly clear. Lows in the mid 30s. Highs in the mid
60s. Southwest winds around 10 mph.
.THURSDAY THROUGH FRIDAY...Mostly clear. Lows in the upper 30s.
Highs 66 to 71.
$$
WYZ279-181300-
Sweetwater County/Rock Springs BLM/Flaming Gorge NRA-
Including the cities of Green River, Rock Springs, and Wamsutter
416 AM MDT Sat May 17 2025
.TODAY...
Sky/weather.........Partly cloudy. Slight chance of showers early
in the morning. Slight chance of thunderstorms
in the afternoon. Chance of showers in the
afternoon. Chance of precipitation 50 percent.
Chance of thunder...20 percent.
Max temperature.....59-64.
24 hr trend......7 degrees warmer.
Min humidity........34-40 percent.
24 hr trend......8 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then
southwest 10 to 15 mph with gusts to around 30
mph.
Ridge top winds.....South around 10 mph until 1200, then southwest
around 20 mph.
Chc of wetting rain.Zero percent until 1200, then 15 percent.
Transport winds.....Southwest 15 to 20 mph.
Mixing Height.......2200-4200 ft agl until 1200, then 6400-8400 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.TONIGHT...
Sky/weather.........Mostly cloudy. Slight chance of thunderstorms
early in the evening. Chance of showers through
the night. Chance of precipitation 50 percent.
Chance of thunder...20 percent.
Min temperature.....36-41.
24 hr trend......3 degrees warmer.
Max humidity........73-79 percent.
24 hr trend......1 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Southwest winds around 10 mph until 2100, then
downslope/downvalley 4-7 mph until 2400, then
south around 10 mph. Gusts up to 25 mph.
Ridge top winds.....South around 15 mph.
Chc of wetting rain.5 percent.
Transport winds.....West around 15 mph until 2400, then south.
Mixing Height.......2400-4400 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.SUNDAY...
Sky/weather.........Mostly cloudy. Chance of showers in the
morning, then showers and slight chance of
thunderstorms in the afternoon. Chance of
precipitation 90 percent.
Chance of thunder...20 percent.
Max temperature.....51-56.
24 hr trend......8 degrees cooler.
Min humidity........46-52 percent.
24 hr trend......11 percent wetter.
20-foot winds.......Southwest winds 15 to 20 mph until 1500, then
west. Gusts up to 35 mph.
Ridge top winds.....Southwest 20 to 25 mph.
Chc of wetting rain.35 percent until 1200, then 55 percent.
Transport winds.....South around 20 mph until 1200, then southwest
around 30 mph.
Mixing Height.......2400-4400 ft agl until 1200, then 4600-6600 ft
agl.
Smoke dispersal.....Good until 1200, then very good.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Mostly cloudy. Chance of showers and slight
chance of snow showers in the evening, then chance of snow
showers and showers after midnight. Lows around 30. West winds
around 15 mph.
.MONDAY...Partly cloudy. Chance of showers and snow showers. Lows
in the lower 30s. Highs in the lower 50s. West winds around
15 mph.
.TUESDAY...Mostly clear. Slight chance of showers. Lows in the
mid 30s. Highs in the lower 60s. West winds around 15 mph.
.WEDNESDAY...Mostly clear. Lows in the upper 30s. Highs in the
upper 60s. West winds around 10 mph.
.THURSDAY THROUGH FRIDAY...Mostly clear. Lows around 40. Highs
72 to 77.
$$
WYZ289-181300-
Granite/Green/Ferris/Rattlesnake Mountains-
Including the city of Jeffrey City
416 AM MDT Sat May 17 2025
.TODAY...
Sky/weather.........Partly cloudy. Chance of showers and slight
chance of thunderstorms in the afternoon.
Chance of precipitation 50 percent.
Chance of thunder...20 percent.
Max temperature.....58-63.
24 hr trend......5 degrees warmer.
Min humidity........32-38 percent.
24 hr trend......3 percent wetter.
20-foot winds.......Southwest winds 10 to 15 mph with gusts to
around 30 mph.
Ridge top winds.....Southwest 15 to 20 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Southwest 15 to 20 mph.
Mixing Height.......2600-4600 ft agl until 1200, then 6600-8600 ft
agl.
Smoke dispersal.....Fair to good until 1200, then very good.
.TONIGHT...
Sky/weather.........Mostly cloudy. Chance of showers and slight
chance of thunderstorms early in the evening,
then slight chance of showers in the late
evening and overnight. Chance of precipitation
50 percent.
Chance of thunder...20 percent.
Min temperature.....39-44.
24 hr trend......4 degrees warmer.
Max humidity........72-78 percent.
24 hr trend......4 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......South winds around 10 mph with gusts to around
25 mph.
Ridge top winds.....South around 15 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....South around 15 mph.
Mixing Height.......1400-3400 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Mostly cloudy. Chance of showers in the
morning, then showers and slight chance of
thunderstorms in the afternoon. Chance of
precipitation 90 percent.
Chance of thunder...20 percent.
Max temperature.....55-60.
24 hr trend......4 degrees cooler.
Min humidity........40-46 percent.
24 hr trend......9 percent wetter.
20-foot winds.......Southwest winds 15 to 20 mph with gusts to
around 35 mph.
Ridge top winds.....Southwest 20 to 25 mph.
Chc of wetting rain.5 percent until 1200, then 35 percent.
Transport winds.....Southwest 20 to 25 mph.
Mixing Height.......2200-4200 ft agl until 1200, then 5400-7400 ft
agl.
Smoke dispersal.....Fair to good until 1200, then very good to
excellent.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Showers likely and slight chance of thunderstorms
in the evening, then showers with snow showers likely after
midnight. Lows in the mid 30s. West winds around 15 mph.
.MONDAY...Cooler. Mostly cloudy with showers with snow showers
likely. Lows in the mid 30s. Highs in the mid 40s. Northwest
winds around 10 mph.
.TUESDAY...Warmer. Mostly clear. Chance of showers and snow
showers. Lows in the upper 30s. Highs in the upper 50s. West
winds around 10 mph.
.WEDNESDAY...Mostly clear. Slight chance of showers. Lows around
40. Highs in the mid 60s. West winds around 10 mph.
.THURSDAY THROUGH FRIDAY...Mostly clear. Lows around 40. Highs in
the lower 70s.
$$
WYZ300-181300-
Casper Mountain-
416 AM MDT Sat May 17 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Slight chance of showers and thunderstorms in
the afternoon. Chance of precipitation 20
percent.
Chance of thunder...20 percent.
Max temperature.....59-64.
24 hr trend......10 degrees warmer.
Min humidity........32-38 percent.
24 hr trend......2 percent wetter.
20-foot winds.......Southwest winds 10 to 15 mph with gusts to
around 25 mph.
Ridge top winds.....Southwest around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 20 mph.
Mixing Height.......2800-4800 ft agl until 1200, then 7000-9000 ft
agl.
Smoke dispersal.....Fair to good until 1200, then very good.
.TONIGHT...
Sky/weather.........Mostly cloudy then becoming partly cloudy.
Slight chance of thunderstorms early in the
evening. Slight chance of showers in the
evening. Chance of precipitation 20 percent.
Chance of thunder...20 percent.
Min temperature.....40-45.
24 hr trend......4 degrees warmer.
Max humidity........67-73 percent.
24 hr trend......3 percent wetter.
Humidity recovery...Good.
20-foot winds.......Downslope/downvalley 4-7 mph until 2100, then
southeast 10 to 15 mph. Gusts up to 25 mph.
Ridge top winds.....South around 10 mph until 2400, then southeast
around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 15 mph until 2400, then southeast
around 25 mph.
Mixing Height.......1400-3400 ft agl until 2400, then 200-600 ft
agl.
Smoke dispersal.....Poor.
.SUNDAY...
Sky/weather.........Mostly cloudy. Showers and slight chance of
thunderstorms in the afternoon. Chance of
precipitation 90 percent.
Chance of thunder...20 percent.
Max temperature.....57-62.
24 hr trend......2 degrees cooler.
Min humidity........39-45 percent.
24 hr trend......5 percent wetter.
20-foot winds.......South winds 10 to 15 mph with gusts to around
25 mph.
Ridge top winds.....South 15 to 20 mph.
Chc of wetting rain.Zero percent until 1200, then 90 percent.
Transport winds.....South around 20 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 4000-6000 ft
agl.
Smoke dispersal.....Fair to good.
.Forecast days 3 through 7......
.SUNDAY NIGHT...Showers and slight chance of thunderstorms in the
evening, then showers and snow showers after midnight. Lows in
the mid 30s. West winds around 10 mph.
.MONDAY...Colder. Snow showers and showers. Lows in the lower
30s. Highs around 40. Northwest winds around 10 mph.
.TUESDAY...Warmer. Partly cloudy with chance of showers, snow
showers and slight chance of thunderstorms. Lows in the mid 30s.
Highs in the lower 50s. West winds around 10 mph.
.WEDNESDAY...Mostly clear. Chance of showers and slight chance of
thunderstorms. Lows around 40. Highs in the upper 50s. Southwest
winds around 10 mph.
.THURSDAY...Mostly clear with slight chance of showers and
thunderstorms. Lows around 40. Highs in the mid 60s.
.FRIDAY...Mostly sunny. Highs in the mid 60s.
$$