Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
586
FNUS55 KRIW 220759
FWFRIW
Fire Weather Planning Forecast for Western and Central Wyoming
National Weather Service Riverton WY
159 AM MDT Fri Aug 22 2025
.DISCUSSION...
...Yellowstone NP and Teton dispatch areas (includes fire weather
zones 140...414...415...and 416)...
Temperatures today are comparable to yesterday. Afternoon RHs trend
higher across zone 140, with a drier trend (5 to 15 percent)
southwards into zones 414 and 416. There is a slight chance (15%-
25%) for showers and thunderstorms this afternoon, mainly across
zones 414 and 416. Hazards with storms are dry lightning and gusty
outflow winds to up to around 40 mph.
...Cody dispatch area (includes fire weather zones 275...276...
282...283...285...286...287...288...and 289)...
Temperatures trend down again today, generally 4 to 8 degrees
cooler. RHs also trend up, generally 5 to 10 percent. Showers and
thunderstorms are possible for all zones today, starting around
noon. The best chances (25%-60%) occur across southeast zone 283 and
zone 289, as well as the higher terrain of 285, 287, and southern
286. An isolated wetting rain is possible, mainly for storms over
mountains, but overall, showers and storms will be on the dry side.
Hazards with storms will be gusty outflow winds 30 to 50 mph and dry
lightning. Hail is also possible, mainly for zones 283, 285, and 289.
...Casper dispatch area (includes fire weather zones 277...278...
279...280...281...285...289...and 300)...
Temperatures trend down east of the Divide, generally 4 to 10
degrees cooler, with similar temperature west of the Divide compared
to yesterday. A similar trend with RHs, with east of the Divide
trending up 9 to 20 percent and similar RHs west of the Divide.
Showers and thunderstorms are possible for all zones today, starting
around 1100L. The best chances (25%-60%) occur across zones 279,
289, 280, 281, 285, and 300. Hazards with storms will be gusty
outflow winds 30 to 50 mph and dry lightning. The stronger storms
could have brief heavy rain and hail.
...Thunderstorms imply strong gusty and erratic winds...
WYZ280-231000-
Natrona County/Casper BLM-
Including the cities of Casper and Midwest
159 AM MDT Fri Aug 22 2025
.TODAY...
Sky/weather.........Partly cloudy. Isolated thunderstorms early in
the afternoon. Isolated showers in the
afternoon. Isolated thunderstorms in the
afternoon. Some thunderstorms may produce gusty
winds early in the afternoon. Some
thunderstorms may be severe in the afternoon.
Chance of precipitation 20 percent.
Chance of thunder...20 percent.
Max temperature.....75-80.
24 hr trend......4 degrees cooler.
Min humidity........42-48 percent.
24 hr trend......12 percent wetter.
20-foot winds.......Northeast winds 10 to 15 mph. Gusts up to 15
mph until 1200, then 30 mph.
Ridge top winds.....Northeast 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northeast 15 to 20 mph.
Mixing Height.......1000-3000 ft agl until 1200, then 4000-6000 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.TONIGHT...
Sky/weather.........Mostly cloudy. Scattered showers and
thunderstorms in the evening, then isolated
showers and thunderstorms after midnight. Some
thunderstorms may be severe early in the
evening. Some thunderstorms may produce gusty
winds in the late evening and early morning.
Chance of precipitation 50 percent.
Chance of thunder...30 percent.
Min temperature.....53-58.
24 hr trend......2 degrees cooler.
Max humidity........78-84 percent.
24 hr trend......5 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Northeast winds 15 to 20 mph until 0300, then
around 10 mph. Gusts up to 30 mph.
Ridge top winds.....Northeast around 25 mph until 2400, then around
15 mph.
Chc of wetting rain.15 percent until 2400, then 5 percent.
Transport winds.....Northeast around 25 mph until 2400, then around
15 mph.
Mixing Height.......2200-4200 ft agl until 2400, then 1000-1800 ft
agl.
Smoke dispersal.....Poor to fair.
.SATURDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...0 percent.
Max temperature.....77-82.
24 hr trend......1 degree warmer.
Min humidity........31-37 percent.
24 hr trend......9 percent drier.
20-foot winds.......Northeast winds around 10 mph until 1200, then
upslope/upvalley 5-9 mph until 1500, then east
around 10 mph. Gusts up to 15 mph.
Ridge top winds.....East 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....East 10 to 15 mph.
Mixing Height.......1000-3000 ft agl until 1200, then 3600-5600 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Partly cloudy. Isolated showers and
thunderstorms in the evening. Lows in the lower 50s. Northeast
winds around 10 mph.
.SUNDAY...Mostly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the lower 50s. Highs in the mid 70s. East
winds around 10 mph.
.MONDAY...Mostly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the lower 50s. Highs in the mid 70s.
Northeast winds around 10 mph.
.TUESDAY...Partly cloudy with chance of showers and slight chance
of thunderstorms. Lows in the lower 50s. Highs in the upper 70s.
Winds generally less than 10 mph.
.WEDNESDAY...Mostly cloudy. Chance of showers and slight chance
of thunderstorms. Lows in the mid 50s. Highs around 80.
.THURSDAY...Mostly cloudy. Slight chance of showers in the
morning, then chance of showers and slight chance of
thunderstorms in the afternoon. Highs in the upper 70s.
$$
WYZ283-231000-
Upper Wind River Basin/Wind River Basin-
Including the cities of Crowheart, Lander, Riverton, and Shoshoni
159 AM MDT Fri Aug 22 2025
.TODAY...
Sky/weather.........Partly cloudy. Isolated showers and
thunderstorms in the afternoon. Some
thunderstorms may produce gusty winds early in
the afternoon. Some thunderstorms may be severe
with gusty winds late in the afternoon. Chance
of precipitation 20 percent.
Chance of thunder...20 percent.
Max temperature.....78-83.
24 hr trend......4 degrees cooler.
Min humidity........31-37 percent.
24 hr trend......10 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then
northeast 10 to 15 mph with gusts to around 25
mph.
Ridge top winds.....Northeast 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northeast 10 to 15 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 4800-6800 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.TONIGHT...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Isolated thunderstorms in the evening. Isolated
showers until early morning. Some thunderstorms
may be severe with gusty winds early in the
evening. Some thunderstorms may produce gusty
winds late in the evening. Chance of
precipitation 20 percent.
Chance of thunder...20 percent.
Min temperature.....52-57.
24 hr trend......1 degree cooler.
Max humidity........77-83 percent.
24 hr trend......1 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......East winds 10 to 15 mph with gusts to around 30
mph.
Ridge top winds.....East 15 to 20 mph.
Chc of wetting rain.10 percent until 2400, then zero percent.
Transport winds.....East 15 to 20 mph.
Mixing Height.......2800-4800 ft agl until 2400, then 1200-2200 ft
agl.
Smoke dispersal.....Poor to fair.
.SATURDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Isolated showers and thunderstorms late in the
afternoon. Some thunderstorms may produce gusty
winds late in the afternoon. Chance of
precipitation 20 percent.
Chance of thunder...10 percent.
Max temperature.....78-83.
24 hr trend......Unchanged.
Min humidity........28-34 percent.
24 hr trend......4 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then east
around 10 mph. Gusts up to 15 mph.
Ridge top winds.....East around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southeast around 10 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 3600-5600 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Partly cloudy. Lows in the lower 50s. Northeast
winds around 10 mph.
.SUNDAY...Mostly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the mid 50s. Highs in the upper 70s. Winds
generally less than 10 mph.
.MONDAY...Mostly cloudy with showers likely and chance of
thunderstorms. Lows in the lower 50s. Highs in the mid 70s. Winds
generally less than 10 mph.
.TUESDAY...Partly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the lower 50s. Highs in the upper 70s.
Winds generally less than 10 mph.
.WEDNESDAY THROUGH THURSDAY...Mostly cloudy with chance of
showers and slight chance of thunderstorms. Lows in the lower
50s. Highs 74 to 79.
$$
WYZ285-231000-
South Bighorn Mountains-
159 AM MDT Fri Aug 22 2025
.TODAY...
Sky/weather.........Partly cloudy. Isolated showers and
thunderstorms in the morning, then scattered
showers and thunderstorms in the afternoon.
Some thunderstorms may produce gusty winds late
in the morning. Some thunderstorms may be
severe in the afternoon. Chance of
precipitation 50 percent.
Chance of thunder...30 percent.
Max temperature.....70-75.
24 hr trend......6 degrees cooler.
Min humidity........50-56 percent.
24 hr trend......17 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then
northeast 10 to 15 mph with gusts to around 25
mph.
Ridge top winds.....North around 10 mph until 1200, then northeast
around 20 mph.
Chc of wetting rain.Zero percent until 1200, then 10 percent.
Transport winds.....North around 10 mph until 1200, then northeast
around 20 mph.
Mixing Height.......600-2600 ft agl until 1200, then 3000-5000 ft
agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Partly cloudy then becoming mostly cloudy.
Isolated thunderstorms in the evening.
Scattered showers through the night. Some
thunderstorms may be severe early in the
evening. Some thunderstorms may produce gusty
winds late in the evening. Chance of
precipitation 50 percent.
Chance of thunder...20 percent.
Min temperature.....51-56.
24 hr trend......3 degrees cooler.
Max humidity........73-79 percent.
24 hr trend......2 percent drier.
Humidity recovery...Excellent.
20-foot winds.......Northeast winds 15 to 20 mph until 0300, then
around 10 mph. Gusts up to 35 mph.
Ridge top winds.....Northeast around 25 mph until 2400, then around
15 mph.
Chc of wetting rain.15 percent until 2400, then zero percent.
Transport winds.....Northeast around 25 mph until 2400, then around
15 mph.
Mixing Height.......800-2800 ft agl.
Smoke dispersal.....Poor.
.SATURDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...0 percent.
Max temperature.....71-76.
24 hr trend......2 degrees warmer.
Min humidity........39-45 percent.
24 hr trend......11 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then
northeast around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Southeast around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph until 1200, then west.
Mixing Height.......600-2600 ft agl until 1200, then 3200-5200 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Partly cloudy. Lows in the lower 50s. Northeast
winds around 10 mph.
.SUNDAY...Partly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the lower 50s. Highs in the upper 60s.
East winds around 10 mph.
.MONDAY...Partly cloudy with chance of showers and slight chance
of thunderstorms. Lows in the lower 50s. Highs in the upper 60s.
Northeast winds around 10 mph.
.TUESDAY...Partly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the mid 50s. Highs in the lower 70s. Winds
generally less than 10 mph.
.WEDNESDAY THROUGH THURSDAY...Mostly cloudy with chance of
showers and slight chance of thunderstorms. Lows in the mid 50s.
Highs 68 to 73.
$$
WYZ281-231000-
Johnson County/Casper BLM-
Including the cities of Buffalo and Kaycee
159 AM MDT Fri Aug 22 2025
.TODAY...
Sky/weather.........Mostly cloudy. Isolated showers and
thunderstorms. Some thunderstorms may produce
gusty winds in the morning. Some thunderstorms
may be severe with gusty winds in the
afternoon. Chance of precipitation 20 percent.
Chance of thunder...20 percent.
Max temperature.....67-72.
24 hr trend......9 degrees cooler.
Min humidity........56-62 percent.
24 hr trend......18 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then
northeast 10 to 15 mph with gusts to around 25
mph.
Ridge top winds.....North around 15 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....North around 15 mph.
Mixing Height.......1000-3000 ft agl until 1200, then 3400-4800 ft
agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Mostly cloudy. Isolated thunderstorms in the
evening. Isolated showers until early morning.
Some thunderstorms may be severe with gusty
winds early in the evening. Some thunderstorms
may produce gusty winds late in the evening.
Chance of precipitation 20 percent.
Chance of thunder...20 percent.
Min temperature.....52-57.
24 hr trend......2 degrees cooler.
Max humidity........71-77 percent.
24 hr trend......15 percent drier.
Humidity recovery...Excellent.
20-foot winds.......North winds 10 to 15 mph with gusts to around
25 mph until 0300, then downslope/downvalley
4-7 mph.
Ridge top winds.....North 10 to 15 mph.
Chc of wetting rain.10 percent until 2400, then zero percent.
Transport winds.....Northeast 10 to 15 mph.
Mixing Height.......1800-3800 ft agl until 2400, then 600-1600 ft
agl.
Smoke dispersal.....Poor.
.SATURDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...0 percent.
Max temperature.....70-75.
24 hr trend......4 degrees warmer.
Min humidity........40-46 percent.
24 hr trend......11 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then east
around 10 mph. Gusts up to 15 mph.
Ridge top winds.....East 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....East 10 to 15 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 3800-5800 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Partly cloudy. Isolated showers and
thunderstorms in the evening. Lows in the lower 50s. Northeast
winds around 10 mph.
.SUNDAY THROUGH MONDAY...Partly cloudy with slight chance of
showers and thunderstorms. Lows in the mid 50s. Highs 74 to 79.
Winds generally less than 10 mph.
.TUESDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the mid 50s. Highs in the lower 80s. Winds
generally less than 10 mph.
.WEDNESDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the mid 50s. Highs in the lower 80s.
.THURSDAY...Partly cloudy. Slight chance of showers in the
morning, then chance of showers and slight chance of
thunderstorms in the afternoon. Highs in the upper 70s.
$$
WYZ282-231000-
South Bighorn Basin/Worland BLM-
Including the cities of Ten Sleep, Thermopolis, and Worland
159 AM MDT Fri Aug 22 2025
.TODAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Isolated showers and thunderstorms in the
afternoon. Some thunderstorms may produce gusty
winds early in the afternoon. Some
thunderstorms may be severe with gusty winds in
the afternoon. Chance of precipitation 20
percent.
Chance of thunder...20 percent.
Max temperature.....74-79.
24 hr trend......5 degrees cooler.
Min humidity........35-41 percent.
24 hr trend......8 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then
northwest around 10 mph. Gusts up to 20 mph.
Ridge top winds.....Northwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 4600-6600 ft
agl.
Smoke dispersal.....Poor to fair.
.TONIGHT...
Sky/weather.........Partly cloudy. Isolated thunderstorms in the
evening. Isolated showers in the evening. Some
thunderstorms may be severe with gusty winds
early in the evening. Some thunderstorms may
produce gusty winds late in the evening. Chance
of precipitation 20 percent.
Chance of thunder...20 percent.
Min temperature.....51-56.
24 hr trend......1 degree cooler.
Max humidity........73-79 percent.
24 hr trend......8 percent drier.
Humidity recovery...Excellent.
20-foot winds.......North winds around 15 mph until 2400, then west
until 0300, then downslope/downvalley 4-7 mph.
Gusts up to 25 mph.
Ridge top winds.....North around 20 mph until 2400, then northwest.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Northeast around 20 mph until 2400, then
northwest.
Mixing Height.......3000-5000 ft agl until 2400, then 1000-1600 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.SATURDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...0 percent.
Max temperature.....75-80.
24 hr trend......2 degrees warmer.
Min humidity........29-35 percent.
24 hr trend......6 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then north
around 10 mph. Gusts up to 15 mph.
Ridge top winds.....North around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph until 1200, then
northwest.
Mixing Height.......1200-3200 ft agl until 1200, then 4200-5600 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Partly cloudy. Lows in the mid 50s. North winds
around 10 mph.
.SUNDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the upper 50s. Highs in the lower 80s.
Winds generally less than 10 mph.
.MONDAY...Partly cloudy with chance of showers and slight chance
of thunderstorms. Lows in the mid 50s. Highs around 80. Winds
generally less than 10 mph.
.TUESDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the mid 50s. Highs in the lower 80s. Winds
generally less than 10 mph.
.WEDNESDAY...Mostly cloudy. Chance of showers and slight chance
of thunderstorms. Lows in the upper 50s. Highs in the lower 80s.
.THURSDAY...Partly cloudy. Slight chance of showers in the
morning, then chance of showers and slight chance of
thunderstorms in the afternoon. Highs in the upper 70s.
$$
WYZ275-231000-
North Bighorn Basin/Worland BLM-
Including the cities of Greybull, Lovell, and Powell
159 AM MDT Fri Aug 22 2025
.TODAY...
Sky/weather.........Mostly sunny. Isolated showers and
thunderstorms in the afternoon. Some
thunderstorms may produce gusty winds in the
afternoon. Chance of precipitation 20 percent.
Chance of thunder...10 percent.
Max temperature.....71-76.
24 hr trend......6 degrees cooler.
Min humidity........39-45 percent.
24 hr trend......7 percent wetter.
20-foot winds.......Northwest winds 10 to 15 mph until 1500, then
north around 20 mph. Gusts up to 30 mph.
Ridge top winds.....Northwest 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 15 to 20 mph.
Mixing Height.......1000-3000 ft agl until 1200, then 4200-6200 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good.
.TONIGHT...
Sky/weather.........Partly cloudy. Isolated showers and
thunderstorms in the evening. Some
thunderstorms may produce gusty winds in the
evening. Chance of precipitation 20 percent.
Chance of thunder...10 percent.
Min temperature.....51-56.
24 hr trend......2 degrees cooler.
Max humidity........72-78 percent.
24 hr trend......6 percent drier.
Humidity recovery...Excellent.
20-foot winds.......North winds 15 to 20 mph with gusts to around
30 mph until 2400, then northwest around 10 mph
and gusty.
Ridge top winds.....Northwest 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....North around 20 mph until 2400, then west.
Mixing Height.......2000-4000 ft agl until 2400, then 600-1200 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.SATURDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...0 percent.
Max temperature.....73-78.
24 hr trend......2 degrees warmer.
Min humidity........31-37 percent.
24 hr trend......6 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then north
around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Northwest around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 10 mph until 1200, then north.
Mixing Height.......1000-3000 ft agl until 1200, then 4000-5400 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Partly cloudy. Lows in the mid 50s. North winds
around 10 mph.
.SUNDAY THROUGH MONDAY...Partly cloudy with slight chance of
showers and thunderstorms. Lows in the mid 50s. Highs in the
lower 80s. Winds generally less than 10 mph.
.TUESDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the upper 50s. Highs in the lower 80s.
Winds generally less than 10 mph.
.WEDNESDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the upper 50s. Highs in the mid 80s.
.THURSDAY...Partly cloudy. Slight chance of showers in the
morning, then chance of showers and slight chance of
thunderstorms in the afternoon. Highs around 80.
$$
WYZ276-231000-
Cody Foothills-
Including the cities of Clark, Cody, and Meeteetse
159 AM MDT Fri Aug 22 2025
.TODAY...
Sky/weather.........Mostly sunny. Isolated showers and
thunderstorms in the afternoon. Some
thunderstorms may produce gusty winds in the
afternoon. Chance of precipitation 20 percent.
Chance of thunder...20 percent.
Max temperature.....70-75.
24 hr trend......5 degrees cooler.
Min humidity........40-46 percent.
24 hr trend......8 percent wetter.
20-foot winds.......North winds 10 to 15 mph until 1200, then
around 20 mph. Gusts up to 30 mph.
Ridge top winds.....North 20 to 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....North 20 to 25 mph.
Mixing Height.......1200-3200 ft agl until 1200, then 3600-5600 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good to very
good.
.TONIGHT...
Sky/weather.........Partly cloudy. Isolated showers and
thunderstorms early in the evening. Some
thunderstorms may produce gusty winds early in
the evening. Chance of precipitation 20
percent.
Chance of thunder...10 percent.
Min temperature.....49-54.
24 hr trend......3 degrees cooler.
Max humidity........68-74 percent.
24 hr trend......2 percent drier.
Humidity recovery...Good.
20-foot winds.......North winds 15 to 20 mph with gusts to around
30 mph until 2400, then northwest around 10 mph
and gusty until 0300, then downslope/downvalley
4-7 mph.
Ridge top winds.....North around 20 mph until 2400, then northwest
around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....North around 20 mph until 2400, then northwest
around 10 mph.
Mixing Height.......1800-3800 ft agl until 2400, then 600-1200 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.SATURDAY...
Sky/weather.........Mostly sunny. Isolated showers and
thunderstorms in the afternoon. Some
thunderstorms may produce gusty winds in the
afternoon. Chance of precipitation 20 percent.
Chance of thunder...10 percent.
Max temperature.....73-78.
24 hr trend......3 degrees warmer.
Min humidity........34-40 percent.
24 hr trend......8 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
northeast around 10 mph. Gusts up to 20 mph.
Ridge top winds.....Northeast 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northeast 10 to 15 mph.
Mixing Height.......800-2800 ft agl until 1200, then 3400-5200 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Partly cloudy. Lows in the lower 50s. Northwest
winds around 10 mph.
.SUNDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the mid 50s. Highs in the mid 70s. Winds
generally less than 10 mph.
.MONDAY...Partly cloudy with chance of showers and slight chance
of thunderstorms. Lows in the lower 50s. Highs in the mid 70s.
North winds around 10 mph.
.TUESDAY...Partly cloudy. Chance of showers and thunderstorms.
Lows in the mid 50s. Highs in the upper 70s. Winds generally less
than 10 mph.
.WEDNESDAY...Mostly cloudy with chance of showers and
thunderstorms. Lows in the mid 50s. Highs in the upper 70s.
.THURSDAY...Mostly cloudy. Chance of showers in the morning, then
chance of showers and slight chance of thunderstorms in the
afternoon. Highs in the mid 70s.
$$
WYZ287-231000-
Owl Creek Mountains-
159 AM MDT Fri Aug 22 2025
.TODAY...
Sky/weather.........Partly cloudy. Isolated showers and
thunderstorms in the afternoon. Some
thunderstorms may produce gusty winds in the
afternoon. Chance of precipitation 20 percent.
Chance of thunder...20 percent.
Max temperature.....72-77.
24 hr trend......5 degrees cooler.
Min humidity........35-41 percent.
24 hr trend......10 percent wetter.
20-foot winds.......North winds 10 to 15 mph with gusts to around
25 mph.
Ridge top winds.....North 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....North 15 to 20 mph.
Mixing Height.......800-2800 ft agl until 1200, then 3600-5600 ft
agl.
Smoke dispersal.....Fair to good.
.TONIGHT...
Sky/weather.........Partly cloudy. Isolated showers and
thunderstorms in the evening. Isolated showers
after midnight. Some thunderstorms may produce
gusty winds in the evening. Chance of
precipitation 20 percent.
Chance of thunder...20 percent.
Min temperature.....52-57.
24 hr trend......2 degrees cooler.
Max humidity........69-75 percent.
24 hr trend......3 percent wetter.
Humidity recovery...Good.
20-foot winds.......North winds 10 to 15 mph until 0300, then
downslope/downvalley 4-7 mph. Gusts up to 30
mph.
Ridge top winds.....North around 20 mph until 2400, then west.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Northwest 15 to 20 mph.
Mixing Height.......2400-4400 ft agl until 2400, then 600-1600 ft
agl.
Smoke dispersal.....Poor to fair.
.SATURDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Isolated showers and thunderstorms in the
afternoon. Some thunderstorms may produce gusty
winds in the afternoon. Chance of precipitation
20 percent.
Chance of thunder...10 percent.
Max temperature.....74-79.
24 hr trend......3 degrees warmer.
Min humidity........30-36 percent.
24 hr trend......6 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then
southeast around 10 mph until 1500, then east.
Gusts up to 20 mph.
Ridge top winds.....South around 15 mph until 1200, then east.
Chc of wetting rain.Zero percent.
Transport winds.....South around 15 mph until 1200, then southeast.
Mixing Height.......800-2800 ft agl until 1200, then 2800-4800 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Partly cloudy. Lows in the lower 50s. North
winds around 10 mph.
.SUNDAY...Mostly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the mid 50s. Highs in the lower 70s. Winds
generally less than 10 mph.
.MONDAY...Mostly cloudy with chance of showers and thunderstorms.
Lows in the lower 50s. Highs in the lower 70s. Winds generally
less than 10 mph.
.TUESDAY...Partly cloudy. Chance of showers and thunderstorms.
Lows in the mid 50s. Highs in the mid 70s. Winds generally less
than 10 mph.
.WEDNESDAY THROUGH THURSDAY...Mostly cloudy with chance of
showers and thunderstorms. Lows in the mid 50s. Highs 70 to 75.
$$
WYZ286-231000-
Absaroka Mountains/North Shoshone NF-
Including the city of Pahaska
159 AM MDT Fri Aug 22 2025
.TODAY...
Sky/weather.........Partly cloudy. Isolated showers and
thunderstorms in the afternoon. Some
thunderstorms may produce gusty winds in the
afternoon. Chance of precipitation 20 percent.
Chance of thunder...20 percent.
Max temperature.....65-70.
24 hr trend......5 degrees cooler.
Min humidity........37-43 percent.
24 hr trend......10 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then east
10 to 15 mph with gusts to around 25 mph.
Ridge top winds.....East around 10 mph until 1200, then around 20
mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southeast around 10 mph until 1200, then
northeast around 20 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 4600-6600 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.TONIGHT...
Sky/weather.........Partly cloudy. Isolated thunderstorms early in
the evening. Isolated showers. Some
thunderstorms may produce gusty winds early in
the evening. Chance of precipitation 20
percent.
Chance of thunder...10 percent.
Min temperature.....44-49.
24 hr trend......3 degrees cooler.
Max humidity........78-84 percent.
24 hr trend......5 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Northeast winds 10 to 15 mph with gusts to
around 25 mph until 2400, then
downslope/downvalley 4-7 mph.
Ridge top winds.....Northeast around 20 mph until 2400, then
southeast around 10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....East around 20 mph until 2400, then southeast
around 10 mph.
Mixing Height.......1400-3400 ft agl until 2400, then 400-1200 ft
agl.
Smoke dispersal.....Poor.
.SATURDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Isolated showers and thunderstorms in the
afternoon. Some thunderstorms may produce gusty
winds in the afternoon. Chance of precipitation
20 percent.
Chance of thunder...10 percent.
Max temperature.....67-72.
24 hr trend......2 degrees warmer.
Min humidity........33-39 percent.
24 hr trend......6 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then east
around 10 mph. Gusts up to 20 mph.
Ridge top winds.....Southeast around 10 mph until 1200, then east.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph until 1200, then west.
Mixing Height.......1400-3400 ft agl until 1200, then 5200-7200 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Partly cloudy. Lows in the mid 40s. Winds
generally less than 10 mph.
.SUNDAY...Mostly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the upper 40s. Highs in the upper 60s.
Winds generally less than 10 mph.
.MONDAY...Partly cloudy. Chance of showers and thunderstorms.
Lows in the mid 40s. Highs in the mid 60s. Winds generally less
than 10 mph.
.TUESDAY...Mostly cloudy. Chance of showers and thunderstorms.
Lows in the upper 40s. Highs in the mid 60s. Winds generally less
than 10 mph.
.WEDNESDAY...Mostly cloudy with chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the mid 60s.
.THURSDAY...Mostly cloudy. Chance of showers in the morning, then
showers likely and chance of thunderstorms in the afternoon.
Highs in the lower 60s.
$$
WYZ140-231000-
Yellowstone National Park-
Including the cities of Lake, Mammoth, and Old Faithful
159 AM MDT Fri Aug 22 2025
.TODAY...
Sky/weather.........Mostly sunny. Areas of smoke until late
afternoon. Isolated showers and thunderstorms
late in the afternoon. Some thunderstorms may
produce gusty winds late in the afternoon.
Chance of precipitation 20 percent.
Chance of thunder...10 percent.
Max temperature.....73-78.
24 hr trend......4 degrees cooler.
Min humidity........22-28 percent.
24 hr trend......6 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
northwest around 10 mph with higher gusts.
Ridge top winds.....Northeast around 10 mph until 1200, then
northwest.
Chc of wetting rain.Zero percent.
Transport winds.....Northeast around 10 mph until 1200, then west.
Mixing Height.......1600-3600 ft agl until 1200, then 7200-9200 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.TONIGHT...
Sky/weather.........Mostly clear.
Chance of thunder...0 percent.
Min temperature.....42-47.
24 hr trend......1 degree cooler.
Max humidity........81-87 percent.
24 hr trend......5 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Northeast winds around 10 mph until 0300, then
downslope/downvalley 4-7 mph. Gusts up to 20
mph.
Ridge top winds.....Northeast 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....East 10 to 15 mph.
Mixing Height.......3000-5000 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Poor to fair until 2400, then poor.
.SATURDAY...
Sky/weather.........Mostly sunny. Areas of smoke early in the
afternoon.
Chance of thunder...0 percent.
Max temperature.....74-79.
24 hr trend......1 degree warmer.
Min humidity........20-26 percent.
24 hr trend......2 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Southeast around 10 mph until 1200, then west.
Chc of wetting rain.Zero percent.
Transport winds.....Southeast around 10 mph until 1200, then west.
Mixing Height.......1600-3600 ft agl until 1200, then 7000-9000 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Partly cloudy. Lows in the lower 40s. Winds
generally less than 10 mph.
.SUNDAY...Mostly cloudy. Slight chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the mid 70s. Winds
generally less than 10 mph.
.MONDAY...Partly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the lower 40s. Highs in the lower 70s.
Winds generally less than 10 mph.
.TUESDAY...Mostly cloudy. Chance of showers and thunderstorms.
Lows in the mid 40s. Highs in the lower 70s. Winds generally less
than 10 mph.
.WEDNESDAY THROUGH THURSDAY...Mostly cloudy with chance of
showers and thunderstorms. Lows in the mid 40s. Highs 64 to 69.
$$
WYZ415-231000-
North Zone Bridger Teton NF and Grand Teton NP-
Including the cities of Jackson and Moran
159 AM MDT Fri Aug 22 2025
.TODAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Isolated showers and thunderstorms late in the
afternoon. Some thunderstorms may produce gusty
winds late in the afternoon. Chance of
precipitation 20 percent.
Chance of thunder...0 percent.
Max temperature.....77-82.
24 hr trend......2 degrees cooler.
Min humidity........16-22 percent.
24 hr trend......3 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
10 to 15 mph with higher gusts.
Ridge top winds.....South around 10 mph until 1200, then west.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph until 1200, then west
around 20 mph.
Mixing Height.......2200-4200 ft agl until 1200, then 8600-10600 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good to
excellent.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....44-49.
24 hr trend......2 degrees cooler.
Max humidity........77-83 percent.
24 hr trend......22 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Northwest winds around 10 mph until 2100, then
east. Gusts up to 20 mph.
Ridge top winds.....Northwest around 15 mph until 2400, then east.
Chc of wetting rain.Zero percent.
Transport winds.....North around 15 mph until 2400, then east.
Mixing Height.......4200-6200 ft agl until 2400, then 400-1000 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.SATURDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...0 percent.
Max temperature.....77-82.
24 hr trend......Unchanged.
Min humidity........18-24 percent.
24 hr trend......Unchanged.
20-foot winds.......Southeast winds around 10 mph until 0900, then
upslope/upvalley 5-9 mph until 1200, then west
around 10 mph. Gusts up to 15 mph.
Ridge top winds.....Southeast around 10 mph until 1200, then west.
Chc of wetting rain.Zero percent.
Transport winds.....Southeast around 10 mph until 1200, then west.
Mixing Height.......1600-3600 ft agl until 1200, then 7000-9000 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Partly cloudy. Lows in the upper 40s. Winds
generally less than 10 mph.
.SUNDAY...Mostly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the upper 40s. Highs in the mid 70s. Winds
generally less than 10 mph.
.MONDAY THROUGH TUESDAY...Mostly cloudy with showers likely and
chance of thunderstorms. Lows in the mid 40s. Highs around 70.
Winds generally less than 10 mph.
.WEDNESDAY THROUGH THURSDAY...Mostly cloudy with showers likely
and chance of thunderstorms. Lows in the mid 40s. Highs 62 to 67.
$$
WYZ416-231000-
West Wind River Mountains/East Zone Bridger Teton NF-
159 AM MDT Fri Aug 22 2025
.TODAY...
Sky/weather.........Partly cloudy. Areas of smoke in the morning.
Isolated showers and thunderstorms in the
afternoon. Some thunderstorms may produce gusty
winds in the afternoon. Chance of precipitation
20 percent.
Chance of thunder...20 percent.
Max temperature.....72-77.
24 hr trend......1 degree warmer.
Min humidity........21-27 percent.
24 hr trend......10 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
10 to 15 mph. Gusts up to 20 mph.
Ridge top winds.....West 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 10 mph until 1200, then west
around 20 mph.
Mixing Height.......3200-5200 ft agl until 1200, then 9200-11200 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Partly cloudy. Isolated showers and
thunderstorms in the evening. Areas of smoke in
the late evening and overnight. Some
thunderstorms may produce gusty winds in the
evening. Chance of precipitation 20 percent.
Chance of thunder...10 percent.
Min temperature.....44-49.
24 hr trend......2 degrees cooler.
Max humidity........78-84 percent.
24 hr trend......21 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Northwest winds around 10 mph until 2100, then
northeast. Gusts up to 30 mph.
Ridge top winds.....Northeast 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northeast 15 to 20 mph.
Mixing Height.......4400-6400 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.SATURDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny. Areas
of smoke in the morning.
Chance of thunder...10 percent.
Max temperature.....72-77.
24 hr trend......1 degree cooler.
Min humidity........21-27 percent.
24 hr trend......Unchanged.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
around 10 mph. Gusts up to 20 mph.
Ridge top winds.....South around 10 mph until 1200, then west.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 10 mph until 1200, then west.
Mixing Height.......1600-3600 ft agl until 1200, then 6400-8400 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good to very
good.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Partly cloudy. Lows in the mid 40s. Northeast
winds around 10 mph.
.SUNDAY...Mostly cloudy. Chance of showers and thunderstorms.
Lows in the mid 40s. Highs in the upper 60s. Winds generally less
than 10 mph.
.MONDAY THROUGH TUESDAY...Mostly cloudy with showers likely and
chance of thunderstorms. Lows in the mid 40s. Highs in the lower
60s. Winds generally less than 10 mph.
.WEDNESDAY THROUGH THURSDAY...Mostly cloudy with showers likely
and chance of thunderstorms. Lows in the lower 40s. Highs 58 to
63.
$$
WYZ288-231000-
East Wind River Mountains/South Shoshone NF-
Including the cities of Dubois and South Pass
159 AM MDT Fri Aug 22 2025
.TODAY...
Sky/weather.........Partly cloudy. Areas of smoke early in the
morning. Isolated showers and thunderstorms
early in the afternoon. Scattered showers and
thunderstorms late in the afternoon. Some
thunderstorms may produce gusty winds in the
afternoon. Chance of precipitation 40 percent.
Chance of thunder...30 percent.
Max temperature.....71-76.
24 hr trend......3 degrees cooler.
Min humidity........30-36 percent.
24 hr trend......6 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then
northeast 10 to 15 mph. Gusts up to 20 mph.
Ridge top winds.....Northwest around 10 mph until 1200, then
northeast.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest 10 to 15 mph.
Mixing Height.......1800-3800 ft agl until 1200, then 5600-7600 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good to very
good.
.TONIGHT...
Sky/weather.........Partly cloudy. Scattered thunderstorms in the
evening. Scattered showers through the night.
Some thunderstorms may produce gusty winds
early in the evening. Some thunderstorms may
produce gusty winds late in the evening. Chance
of precipitation 50 percent.
Chance of thunder...30 percent.
Min temperature.....47-52.
24 hr trend......3 degrees cooler.
Max humidity........87-93 percent.
24 hr trend......23 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Northeast winds 10 to 15 mph with gusts to
around 30 mph.
Ridge top winds.....East 15 to 20 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....East 15 to 20 mph.
Mixing Height.......2000-4000 ft agl until 2400, then 400-1400 ft
agl.
Smoke dispersal.....Poor to fair.
.SATURDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Isolated showers and thunderstorms in the
afternoon. Some thunderstorms may produce gusty
winds in the afternoon. Chance of precipitation
20 percent.
Chance of thunder...10 percent.
Max temperature.....71-76.
24 hr trend......Unchanged.
Min humidity........31-37 percent.
24 hr trend......1 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then east
around 10 mph. Gusts up to 15 mph.
Ridge top winds.....East 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....South around 10 mph until 1200, then west.
Mixing Height.......1200-3200 ft agl until 1200, then 5000-7000 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Partly cloudy. Lows in the upper 40s. Northeast
winds around 10 mph.
.SUNDAY...Mostly cloudy. Chance of showers and thunderstorms.
Lows in the upper 40s. Highs in the upper 60s. Winds generally
less than 10 mph.
.MONDAY THROUGH TUESDAY...Mostly cloudy with showers likely and
chance of thunderstorms. Lows 46 to 51. Highs 62 to 67. Winds
generally less than 10 mph.
.WEDNESDAY THROUGH THURSDAY...Mostly cloudy with showers likely
and chance of thunderstorms. Lows in the upper 40s. Highs 60 to
65.
$$
WYZ414-231000-
Salt and Wyoming Ranges/West Zone Bridger Teton NF-
Including the city of Afton
159 AM MDT Fri Aug 22 2025
.TODAY...
Sky/weather.........Partly cloudy. Isolated showers and
thunderstorms late in the afternoon. Some
thunderstorms may produce gusty winds late in
the afternoon. Chance of precipitation 20
percent.
Chance of thunder...10 percent.
Max temperature.....78-83.
24 hr trend......2 degrees warmer.
Min humidity........15-21 percent.
24 hr trend......11 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
10 to 15 mph with higher gusts.
Ridge top winds.....West 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 10 mph until 1200, then around 20
mph.
Mixing Height.......2800-4800 ft agl until 1200, then 9600-11600 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good to
excellent.
.TONIGHT...
Sky/weather.........Partly cloudy.
Chance of thunder...0 percent.
Min temperature.....45-50.
24 hr trend......3 degrees cooler.
Max humidity........75-81 percent.
24 hr trend......27 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Northwest winds around 10 mph until 2100, then
north until 2400, then southeast. Gusts up to
20 mph.
Ridge top winds.....Northwest around 15 mph until 2400, then
southeast.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 15 mph until 2400, then
southeast.
Mixing Height.......4600-6600 ft agl until 2400, then 400-1000 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.SATURDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...0 percent.
Max temperature.....78-83.
24 hr trend......1 degree cooler.
Min humidity........14-20 percent.
24 hr trend......1 percent drier.
20-foot winds.......Southeast winds around 10 mph until 1200, then
west. Gusts up to 20 mph.
Ridge top winds.....Southeast around 15 mph until 1200, then west.
Chc of wetting rain.Zero percent.
Transport winds.....South around 15 mph until 1200, then west.
Mixing Height.......1800-3800 ft agl until 1200, then 7600-9600 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Partly cloudy. Lows around 50. Winds generally
less than 10 mph.
.SUNDAY...Mostly cloudy with chance of showers and slight chance
of thunderstorms. Lows in the upper 40s. Highs in the mid 70s.
Winds generally less than 10 mph.
.MONDAY THROUGH TUESDAY...Mostly cloudy with showers likely and
chance of thunderstorms. Lows in the upper 40s. Highs around 70.
Winds generally less than 10 mph.
.WEDNESDAY THROUGH THURSDAY...Mostly cloudy with showers likely
and chance of thunderstorms. Lows in the upper 40s. Highs 62 to
67.
$$
WYZ277>279-231000-
Lincoln and Uinta Counties/Lower Elevations-
Upper Green River Basin/Rock Springs BLM-
Sweetwater County/Rock Springs BLM/Flaming Gorge NRA-
Including the cities of Evanston, Fort Bridger, Kemmerer,
Big Piney, Farson, Pinedale, Green River, Rock Springs,
and Wamsutter
159 AM MDT Fri Aug 22 2025
.TODAY...
Sky/weather.........Partly cloudy. Isolated showers and
thunderstorms in the afternoon. Some
thunderstorms may produce gusty winds in the
afternoon. Chance of precipitation 20 percent.
Chance of thunder...20 percent.
Max temperature.....77-82.
24 hr trend......2 degrees warmer.
Min humidity........23-29 percent.
24 hr trend......2 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1500, then west
around 10 mph with higher gusts.
Ridge top winds.....Northeast around 10 mph until 1200, then west.
Chc of wetting rain.Zero percent.
Transport winds.....Northeast around 10 mph until 1200, then west.
Mixing Height.......1400-3400 ft agl until 1200, then 7800-9800 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.TONIGHT...
Sky/weather.........Partly cloudy. Isolated showers and
thunderstorms early in the evening. Some
thunderstorms may produce gusty winds early in
the evening. Chance of precipitation 20
percent.
Chance of thunder...20 percent.
Min temperature.....48-53.
24 hr trend......3 degrees cooler.
Max humidity........75-81 percent.
24 hr trend......19 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......West winds around 10 mph until 2100, then
northeast. Gusts up to 25 mph.
Ridge top winds.....Northwest around 20 mph until 2400, then
northeast.
Chc of wetting rain.Zero percent.
Transport winds.....East around 20 mph.
Mixing Height.......3400-5400 ft agl until 2400, then 600-1000 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.SATURDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...0 percent.
Max temperature.....77-82.
24 hr trend......1 degree warmer.
Min humidity........16-22 percent.
24 hr trend......4 percent drier.
20-foot winds.......Northeast winds around 10 mph until 1200, then
upslope/upvalley 5-9 mph until 1500, then
northwest around 10 mph. Gusts up to 20 mph.
Ridge top winds.....Northeast around 15 mph until 1200, then
northwest.
Chc of wetting rain.Zero percent.
Transport winds.....East around 15 mph until 1200, then northwest.
Mixing Height.......800-2800 ft agl until 1200, then 5800-7800 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Partly cloudy. Lows in the lower 50s. Winds
generally less than 10 mph.
.SUNDAY...Mostly cloudy with chance of showers and thunderstorms.
Lows in the lower 50s. Highs in the upper 70s. Winds generally
less than 10 mph.
.MONDAY THROUGH TUESDAY...Mostly cloudy with showers likely and
chance of thunderstorms. Lows around 50. Highs in the mid 70s.
Winds generally less than 10 mph.
.WEDNESDAY...Mostly cloudy with showers likely and chance of
thunderstorms. Lows in the upper 40s. Highs in the lower 70s.
.THURSDAY...Partly cloudy. Chance of showers in the morning, then
showers likely and chance of thunderstorms in the afternoon.
Highs around 70.
$$
WYZ289-231000-
Granite/Green/Ferris/Rattlesnake Mountains-
Including the city of Jeffrey City
159 AM MDT Fri Aug 22 2025
.TODAY...
Sky/weather.........Partly cloudy. Isolated showers and
thunderstorms in the afternoon. Scattered
showers and thunderstorms late in the
afternoon. Some thunderstorms may produce gusty
winds early in the afternoon. Some
thunderstorms may be severe with gusty winds in
the afternoon. Chance of precipitation 50
percent.
Chance of thunder...30 percent.
Max temperature.....74-79.
24 hr trend......1 degree cooler.
Min humidity........27-33 percent.
24 hr trend......7 percent wetter.
20-foot winds.......Northeast winds 10 to 15 mph. Gusts up to 15
mph until 1200, then 25 mph.
Ridge top winds.....Northeast around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....North around 15 mph.
Mixing Height.......800-2800 ft agl until 1200, then 6000-8000 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.TONIGHT...
Sky/weather.........Partly cloudy. Scattered showers and
thunderstorms in the evening. Isolated showers
and thunderstorms after midnight. Some
thunderstorms may be severe with gusty winds
early in the evening. Some thunderstorms may
produce gusty winds in the late evening and
early morning. Chance of precipitation 50
percent.
Chance of thunder...30 percent.
Min temperature.....52-57.
24 hr trend......2 degrees cooler.
Max humidity........81-87 percent.
24 hr trend......8 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......Northeast winds 15 to 20 mph with gusts to
around 30 mph.
Ridge top winds.....Northeast 20 to 25 mph.
Chc of wetting rain.10 percent until 2400, then zero percent.
Transport winds.....Northeast 20 to 25 mph.
Mixing Height.......2400-4400 ft agl until 2400, then 1000-1600 ft
agl.
Smoke dispersal.....Poor to fair.
.SATURDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...0 percent.
Max temperature.....75-80.
24 hr trend......Unchanged.
Min humidity........21-27 percent.
24 hr trend......6 percent drier.
20-foot winds.......East winds around 10 mph until 1200, then
upslope/upvalley 5-9 mph until 1500, then
northeast around 10 mph. Gusts up to 20 mph.
Ridge top winds.....Northeast 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....East around 15 mph until 1200, then north.
Mixing Height.......600-2600 ft agl until 1200, then 4600-6600 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Partly cloudy. Lows in the lower 50s. Northeast
winds around 10 mph.
.SUNDAY...Mostly cloudy. Chance of showers and thunderstorms.
Lows in the mid 50s. Highs in the mid 70s. Northeast winds around
10 mph.
.MONDAY...Mostly cloudy with showers likely and chance of
thunderstorms. Lows around 50. Highs in the lower 70s. Winds
generally less than 10 mph.
.TUESDAY...Partly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the lower 50s. Highs in the mid 70s. Winds
generally less than 10 mph.
.WEDNESDAY...Mostly cloudy. Chance of showers and slight chance
of thunderstorms. Lows in the lower 50s. Highs in the mid 70s.
.THURSDAY...Partly cloudy. Chance of showers in the morning, then
showers likely and chance of thunderstorms in the afternoon.
Highs around 70.
$$
WYZ300-231000-
Casper Mountain-
159 AM MDT Fri Aug 22 2025
.TODAY...
Sky/weather.........Partly cloudy. Scattered showers and
thunderstorms in the afternoon. Some
thunderstorms may produce gusty winds early in
the afternoon. Some thunderstorms may be severe
in the afternoon. Chance of precipitation 50
percent.
Chance of thunder...30 percent.
Max temperature.....71-76.
24 hr trend......5 degrees cooler.
Min humidity........43-49 percent.
24 hr trend......18 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then north
10 to 15 mph. Gusts up to 20 mph.
Ridge top winds.....Northeast 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northeast 10 to 15 mph.
Mixing Height.......800-2800 ft agl until 1200, then 4400-6400 ft
agl.
Smoke dispersal.....Poor until 1200, then good.
.TONIGHT...
Sky/weather.........Mostly cloudy. Scattered thunderstorms in the
evening. Scattered showers through the night.
Isolated thunderstorms after midnight. Some
thunderstorms may be severe early in the
evening. Some thunderstorms may produce gusty
winds in the late evening and early morning.
Chance of precipitation 50 percent.
Chance of thunder...40 percent.
Min temperature.....51-56.
24 hr trend......3 degrees cooler.
Max humidity........86-92 percent.
24 hr trend......12 percent wetter.
Humidity recovery...Excellent.
20-foot winds.......East winds 10 to 15 mph with gusts to around 25
mph.
Ridge top winds.....East 15 to 20 mph.
Chc of wetting rain.35 percent until 2400, then 5 percent.
Transport winds.....East 15 to 20 mph.
Mixing Height.......1400-3400 ft agl until 2400, then 400-1200 ft
agl.
Smoke dispersal.....Poor.
.SATURDAY...
Sky/weather.........Partly cloudy then becoming mostly sunny.
Chance of thunder...10 percent.
Max temperature.....71-76.
24 hr trend......1 degree cooler.
Min humidity........37-43 percent.
24 hr trend......7 percent drier.
20-foot winds.......East winds around 10 mph until 1200, then
upslope/upvalley 5-9 mph until 1500, then north
around 10 mph. Gusts up to 15 mph.
Ridge top winds.....East around 10 mph until 1200, then northeast.
Chc of wetting rain.Zero percent.
Transport winds.....Southeast around 10 mph until 1200, then
northwest.
Mixing Height.......800-2800 ft agl until 1200, then 4400-6400 ft
agl.
Smoke dispersal.....Poor to fair.
.Forecast days 3 through 7......
.SATURDAY NIGHT...Partly cloudy. Lows in the lower 50s. Winds
generally less than 10 mph.
.SUNDAY...Mostly cloudy. Chance of showers and thunderstorms.
Lows in the lower 50s. Highs around 70. Winds generally less than
10 mph.
.MONDAY...Mostly cloudy with showers likely and chance of
thunderstorms. Lows around 50. Highs in the upper 60s. Winds
generally less than 10 mph.
.TUESDAY...Partly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the lower 50s. Highs in the lower 70s.
Winds generally less than 10 mph.
.WEDNESDAY...Mostly cloudy. Chance of showers and thunderstorms.
Lows in the lower 50s. Highs in the lower 70s.
.THURSDAY...Mostly cloudy. Chance of showers in the morning, then
chance of showers and thunderstorms in the afternoon. Highs in
the upper 60s.
$$