Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
052
FNUS55 KRIW 130857
FWFRIW
Fire Weather Planning Forecast for Western and Central Wyoming
National Weather Service Riverton WY
257 AM MDT Wed Aug 13 2025
.DISCUSSION...
...Yellowstone NP and Teton dispatch areas (includes fire weather
zones 140...414...415...and 416)...
...RED FLAG WARNING in effect for 414, 415 and 416 from Noon to 8 PM
Today for low humidity, dry fuels, gusty winds, and increased
thunderstorm activity...
Critical fire weather across most of the area today. Valley RHs will
be around 15 percent, with around 20 percent for much of the higher
elevations. Afternoon west-southwest winds increase, with widespread
gusts of 25 mph or greater. For the higher elevations, gusts 35 mph
or greater will be common. Showers and thunderstorms are also
possible this afternoon and evening, and will be capable of
producing localized gusts in excess of 40 mph. The chance of wetting
rain in near zero.
...Cody dispatch area (includes fire weather zones 275...276...
282...283...285...286...287...288...and 289)...
...RED FLAG WARNING in effect for 283, 286, and 288 from Noon to 8
PM Today for low humidity, dry fuels, gusty winds, and increased
thunderstorm activity...
Elevated to critical fire weather today. Minimum RHs in the lower
elevations will be 12 to 20 percent, driest further south. Higher
elevations will be around 20 percent. Afternoon west-southwest winds
increase, with widespread gusts of 25 mph or greater, though winds
will be less for zones 275 and 282. For the higher elevations, gusts
35 mph or greater will be common. Showers and thunderstorms are also
possible this afternoon and evening, and will be capable of
producing localized gusts over 40 mph, and possibly over 50 mph. The
chance of wetting rain in near zero.
...Casper dispatch area (includes fire weather zones 277...278...
279...280...281...285...289...and 300)...
...RED FLAG WARNING in effect for 277 and 278 from Noon to 8 PM
Today for low humidity, dry fuels, and gusty winds...
...RED FLAG WARNING in effect for 279, 280, 289, and 300 from Noon
Today to 8 PM Thursday for low humidity, dry fuels, and gusty
winds...
Critical fire weather today for most of the area. Minimum RHs in the
lower elevations will be 8 to 12 percent. Higher elevations will be
15 to 20 percent. Afternoon west-southwest winds increase, with
widespread gusts of 25 mph or greater. Showers and thunderstorms are
also possible this afternoon and evening, and will be capable of
producing localized gusts over 40 mph, and possibly over 50 mph. The
chance of wetting rain in near zero.
...Thunderstorms imply strong gusty and erratic winds...
WYZ280-141100-
Natrona County/Casper BLM-
Including the cities of Casper and Midwest
257 AM MDT Wed Aug 13 2025
...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 8 PM MDT
THURSDAY...
.TODAY...
Sky/weather.........Sunny then becoming 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.....88-93.
24 hr trend......4 degrees warmer.
Min humidity........12-18 percent.
24 hr trend......4 percent drier.
20-foot winds.......West winds 10 to 15 mph with gusts to around 30
mph until 1500, then northwest around 20 mph
with gusts to around 30 mph.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph until 1200, then around 25
mph.
Mixing Height.......4000-6000 ft agl until 1200, then 11200-13200
ft agl.
Smoke dispersal.....Good until 1200, then excellent.
.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.....60-65.
24 hr trend......1 degree warmer.
Max humidity........46-52 percent.
24 hr trend......10 percent drier.
Humidity recovery...Moderate.
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.....West around 15 mph.
Mixing Height.......3400-5400 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.THURSDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Isolated showers in the afternoon. Isolated
thunderstorms late in the afternoon. Some
thunderstorms may produce gusty winds late in
the afternoon. Chance of precipitation 20
percent.
Chance of thunder...20 percent.
Max temperature.....88-93.
24 hr trend......Unchanged.
Min humidity........14-20 percent.
24 hr trend......2 percent wetter.
20-foot winds.......West winds 10 to 15 mph with gusts to around 25
mph.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......2800-4800 ft agl until 1200, then 10000-12000
ft agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.Forecast days 3 through 7......
.THURSDAY NIGHT...Partly cloudy. Isolated showers and
thunderstorms in the evening. Lows around 60. Southwest winds
around 10 mph.
.FRIDAY...Partly cloudy with chance of showers and slight chance
of thunderstorms. Lows in the upper 50s. Highs in the lower 90s.
Southwest winds around 10 mph.
.SATURDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the upper 50s. Highs in the upper 80s.
Southwest winds around 10 mph.
.SUNDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the mid 50s. Highs in the upper 80s. West
winds around 10 mph.
.MONDAY THROUGH TUESDAY...Mostly clear. Lows in the upper 50s.
Highs in the lower 90s.
$$
WYZ283-141100-
Upper Wind River Basin/Wind River Basin-
Including the cities of Crowheart, Lander, Riverton, and Shoshoni
257 AM MDT Wed Aug 13 2025
...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 8 PM MDT THIS
EVENING...
.TODAY...
Sky/weather.........Sunny then becoming 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.....86-91.
24 hr trend......3 degrees warmer.
Min humidity........14-20 percent.
24 hr trend......3 percent drier.
20-foot winds.......West winds 10 to 15 mph. Gusts up to 20 mph
until 1200, then 30 mph.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph until 1200, then around 25
mph.
Mixing Height.......3400-5400 ft agl until 1200, then 11200-13200
ft agl.
Smoke dispersal.....Good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Partly cloudy. Isolated showers early in the
evening. Chance of showers 20 percent.
Chance of thunder...0 percent.
Min temperature.....58-63.
24 hr trend......Unchanged.
Max humidity........41-47 percent.
24 hr trend......1 percent drier.
Humidity recovery...Moderate.
20-foot winds.......West winds 10 to 15 mph. Gusts up to 30 mph
until 2400, then 20 mph.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......3800-5800 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.THURSDAY...
Sky/weather.........Partly cloudy. Scattered showers early in the
afternoon. Isolated thunderstorms in the
afternoon. Isolated showers late in the
afternoon. Some thunderstorms may produce gusty
winds in the afternoon. Chance of precipitation
40 percent.
Chance of thunder...20 percent.
Max temperature.....85-90.
24 hr trend......1 degree cooler.
Min humidity........15-21 percent.
24 hr trend......2 percent wetter.
20-foot winds.......Southwest winds around 10 mph and gusty until
0900, then upslope/upvalley 5-9 mph until 1200,
then west 10 to 15 mph with gusts to around 25
mph.
Ridge top winds.....West 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......2200-4200 ft agl until 1200, then 7800-9800 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.Forecast days 3 through 7......
.THURSDAY NIGHT...Partly cloudy. Isolated showers and
thunderstorms in the evening. Lows in the upper 50s. Southwest
winds around 10 mph.
.FRIDAY THROUGH SATURDAY...Partly cloudy with slight chance of
showers and thunderstorms. Lows 55 to 60. Highs 85 to 90.
Southwest winds around 10 mph.
.SUNDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the mid 50s. Highs in the upper 80s. West
winds around 10 mph.
.MONDAY THROUGH TUESDAY...Mostly clear. Lows in the upper 50s.
Highs 88 to 93.
$$
WYZ285-141100-
South Bighorn Mountains-
257 AM MDT Wed Aug 13 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Isolated showers in the afternoon. Isolated
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.....81-86.
24 hr trend......4 degrees warmer.
Min humidity........15-21 percent.
24 hr trend......4 percent drier.
20-foot winds.......West winds 10 to 15 mph. Gusts up to 20 mph
until 1200, then 30 mph.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph until 1200, then around 25
mph.
Mixing Height.......2600-4600 ft agl until 1200, then 8800-10800 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.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.....58-63.
24 hr trend......1 degree cooler.
Max humidity........41-47 percent.
24 hr trend......3 percent drier.
Humidity recovery...Moderate.
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.....West around 15 mph.
Mixing Height.......2600-4600 ft agl until 2400, then 200-600 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.THURSDAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Isolated showers in the afternoon. Isolated
thunderstorms late in the afternoon. Some
thunderstorms may produce gusty winds late in
the afternoon. Chance of precipitation 20
percent.
Chance of thunder...20 percent.
Max temperature.....81-86.
24 hr trend......Unchanged.
Min humidity........15-21 percent.
24 hr trend......Unchanged.
20-foot winds.......West winds 10 to 15 mph with higher gusts.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......2000-4000 ft agl until 1200, then 7800-9800 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.Forecast days 3 through 7......
.THURSDAY NIGHT...Partly cloudy. Lows in the upper 50s. Southwest
winds around 10 mph.
.FRIDAY THROUGH SATURDAY...Partly cloudy with slight chance of
showers and thunderstorms. Lows 56 to 61. Highs 79 to 84.
Southwest winds around 10 mph.
.SUNDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the upper 50s. Highs in the lower 80s.
West winds around 10 mph.
.MONDAY THROUGH TUESDAY...Mostly clear. Lows in the upper 50s.
Highs in the mid 80s.
$$
WYZ281-141100-
Johnson County/Casper BLM-
Including the cities of Buffalo and Kaycee
257 AM MDT Wed Aug 13 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming 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.....84-89.
24 hr trend......1 degree warmer.
Min humidity........18-24 percent.
24 hr trend......1 percent drier.
20-foot winds.......Southwest winds around 10 mph and gusty until
0900, then northwest with gusts to around 25
mph.
Ridge top winds.....Southwest around 15 mph until 1200, then
northwest.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph until 1200, then around 25
mph.
Mixing Height.......3600-5600 ft agl until 1200, then 10800-12800
ft agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.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.....61-66.
24 hr trend......Unchanged.
Max humidity........51-57 percent.
24 hr trend......8 percent drier.
Humidity recovery...Moderate.
20-foot winds.......West winds around 10 mph until 2100, then
southwest. Gusts up to 20 mph.
Ridge top winds.....Southwest around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph.
Mixing Height.......3000-5000 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.THURSDAY...
Sky/weather.........Mostly sunny then becoming 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.....83-88.
24 hr trend......1 degree cooler.
Min humidity........21-27 percent.
24 hr trend......2 percent wetter.
20-foot winds.......West winds around 10 mph until 0900, then
north. Gusts up to 20 mph.
Ridge top winds.....North around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 15 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 6600-8600 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then good to very
good.
.Forecast days 3 through 7......
.THURSDAY NIGHT...Partly cloudy. Isolated showers and
thunderstorms in the evening. Lows in the lower 60s. West winds
around 10 mph.
.FRIDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the lower 60s. Highs around 90. Northwest
winds around 10 mph.
.SATURDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the lower 60s. Highs in the upper 80s.
South winds around 10 mph.
.SUNDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the upper 50s. Highs in the upper 80s.
West winds around 10 mph.
.MONDAY THROUGH TUESDAY...Mostly clear. Lows in the lower 60s.
Highs in the lower 90s.
$$
WYZ282-141100-
South Bighorn Basin/Worland BLM-
Including the cities of Ten Sleep, Thermopolis, and Worland
257 AM MDT Wed Aug 13 2025
.TODAY...
Sky/weather.........Sunny then becoming 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.....83-88.
24 hr trend......2 degrees warmer.
Min humidity........14-20 percent.
24 hr trend......2 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
northwest around 10 mph with gusts to around 25
mph until 1500, then southwest with gusts to
around 25 mph.
Ridge top winds.....Southwest around 10 mph until 1200, then west.
Chc of wetting rain.Zero percent.
Transport winds.....West around 10 mph until 1200, then around 20
mph.
Mixing Height.......1800-3800 ft agl until 1200, then 8600-10600 ft
agl.
Smoke dispersal.....Poor until 1200, then excellent.
.TONIGHT...
Sky/weather.........Partly cloudy. Isolated showers early in the
evening. Chance of showers 20 percent.
Chance of thunder...0 percent.
Min temperature.....56-61.
24 hr trend......1 degree cooler.
Max humidity........45-51 percent.
24 hr trend......3 percent drier.
Humidity recovery...Moderate.
20-foot winds.......West winds around 10 mph until 2400, then
southwest. Gusts up to 20 mph.
Ridge top winds.....West around 15 mph until 2400, then southwest.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph.
Mixing Height.......2600-4600 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.THURSDAY...
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.....83-88.
24 hr trend......Unchanged.
Min humidity........14-20 percent.
24 hr trend......Unchanged.
20-foot winds.......Southwest winds around 10 mph until 0900, then
upslope/upvalley 5-9 mph until 1500, then west
around 10 mph. Gusts up to 20 mph.
Ridge top winds.....West around 10 mph until 1200, then northwest.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 7000-9000 ft
agl.
Smoke dispersal.....Poor until 1200, then good to very good.
.Forecast days 3 through 7......
.THURSDAY NIGHT...Partly cloudy. Lows around 60. South winds
around 10 mph.
.FRIDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the upper 50s. Highs in the lower 90s.
Winds generally less than 10 mph.
.SATURDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the upper 50s. Highs in the upper 80s.
South winds around 10 mph.
.SUNDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the upper 50s. Highs around 90. Winds
generally less than 10 mph.
.MONDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows around 60. Highs in the lower 90s.
.TUESDAY...Sunny. Highs in the lower 90s.
$$
WYZ275-141100-
North Bighorn Basin/Worland BLM-
Including the cities of Greybull, Lovell, and Powell
257 AM MDT Wed Aug 13 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming 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.....80-85.
24 hr trend......Unchanged.
Min humidity........17-23 percent.
24 hr trend......2 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then
southwest around 10 mph with higher gusts until
1500, then northwest with higher gusts.
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
around 20 mph.
Mixing Height.......1800-3800 ft agl until 1200, then 8400-10400 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good to
excellent.
.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.....55-60.
24 hr trend......2 degrees cooler.
Max humidity........50-56 percent.
24 hr trend......1 percent drier.
Humidity recovery...Moderate.
20-foot winds.......Northeast winds around 10 mph until 2100, then
southeast until 0300, then west. Gusts up to 15
mph.
Ridge top winds.....Northeast around 15 mph until 2400, then south.
Chc of wetting rain.Zero percent.
Transport winds.....South around 15 mph.
Mixing Height.......2400-4400 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Poor to fair.
.THURSDAY...
Sky/weather.........Mostly sunny then becoming 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.....81-86.
24 hr trend......Unchanged.
Min humidity........16-22 percent.
24 hr trend......Unchanged.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then south
around 10 mph with gusts to around 25 mph.
Ridge top winds.....West around 10 mph until 1200, then south.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......1400-3400 ft agl until 1200, then 7000-9000 ft
agl.
Smoke dispersal.....Poor until 1200, then very good.
.Forecast days 3 through 7......
.THURSDAY NIGHT...Partly cloudy. Lows in the upper 50s. East
winds around 10 mph.
.FRIDAY...Mostly clear. Lows in the upper 50s. Highs around 90.
Winds generally less than 10 mph.
.SATURDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows around 60. Highs in the upper 80s. South
winds around 10 mph.
.SUNDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the upper 50s. Highs around 90. Winds
generally less than 10 mph.
.MONDAY THROUGH TUESDAY...Mostly clear. Lows around 60. Highs in
the lower 90s.
$$
WYZ276-141100-
Cody Foothills-
Including the cities of Clark, Cody, and Meeteetse
257 AM MDT Wed Aug 13 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Scattered showers and thunderstorms in the
afternoon. Some thunderstorms may produce gusty
winds early in the afternoon. Some
thunderstorms may produce gusty winds late in
the afternoon. Chance of precipitation 40
percent.
Chance of thunder...30 percent.
Max temperature.....83-88.
24 hr trend......1 degree cooler.
Min humidity........17-23 percent.
24 hr trend......1 percent drier.
20-foot winds.......West winds 10 to 15 mph. Gusts up to 25 mph
until 1200, then 35 mph.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph until 1200, then around 25
mph.
Mixing Height.......4600-6600 ft agl until 1200, then 10800-12800
ft agl.
Smoke dispersal.....Good to very good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Partly cloudy. Isolated thunderstorms early in
the evening. Isolated showers 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.....56-61.
24 hr trend......2 degrees cooler.
Max humidity........45-51 percent.
24 hr trend......1 percent drier.
Humidity recovery...Moderate.
20-foot winds.......West winds around 15 mph until 2100, then
southwest. Gusts up to 30 mph.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......3200-5200 ft agl until 2400, then 600-1000 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.THURSDAY...
Sky/weather.........Mostly sunny then becoming 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.....82-87.
24 hr trend......1 degree cooler.
Min humidity........19-25 percent.
24 hr trend......1 percent wetter.
20-foot winds.......West winds 10 to 15 mph with gusts to around 25
mph.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph until 1200, then around 25
mph.
Mixing Height.......2800-4800 ft agl until 1200, then 9000-11000 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.Forecast days 3 through 7......
.THURSDAY NIGHT...Partly cloudy. Lows in the upper 50s. West
winds around 10 mph.
.FRIDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the upper 50s. Highs in the mid 80s. West
winds around 10 mph.
.SATURDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the upper 50s. Highs in the mid 80s.
Southwest winds around 10 mph.
.SUNDAY...Partly cloudy with chance of showers and thunderstorms.
Lows in the upper 50s. Highs in the lower 80s. West winds around
10 mph.
.MONDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the upper 50s. Highs in the upper 80s.
.TUESDAY...Mostly sunny. Highs in the upper 80s.
$$
WYZ287-141100-
Owl Creek Mountains-
257 AM MDT Wed Aug 13 2025
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Isolated showers early in the afternoon.
Isolated thunderstorms in the afternoon.
Scattered showers in the afternoon. Some
thunderstorms may produce gusty winds in the
afternoon. Chance of precipitation 40 percent.
Chance of thunder...20 percent.
Max temperature.....82-87.
24 hr trend......3 degrees warmer.
Min humidity........13-19 percent.
24 hr trend......4 percent drier.
20-foot winds.......West winds 10 to 15 mph with gusts to around 30
mph until 1500, then around 20 mph with gusts
to around 30 mph.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph until 1200, then around 25
mph.
Mixing Height.......3800-5800 ft agl until 1200, then 10200-12200
ft agl.
Smoke dispersal.....Good until 1200, then excellent.
.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.....59-64.
24 hr trend......Unchanged.
Max humidity........34-40 percent.
24 hr trend......4 percent drier.
Humidity recovery...Poor.
20-foot winds.......West winds 10 to 15 mph with gusts to around 25
mph.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 20 mph.
Mixing Height.......3400-5400 ft agl until 2400, then 200-600 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.THURSDAY...
Sky/weather.........Partly cloudy. Scattered showers and isolated
thunderstorms in the afternoon. Some
thunderstorms may produce gusty winds in the
afternoon. Chance of precipitation 40 percent.
Chance of thunder...20 percent.
Max temperature.....81-86.
24 hr trend......Unchanged.
Min humidity........15-21 percent.
24 hr trend......1 percent wetter.
20-foot winds.......West winds around 10 mph until 0900, then north
until 1200, then west. Gusts up to 25 mph.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......2400-4400 ft agl until 1200, then 6800-8800 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.Forecast days 3 through 7......
.THURSDAY NIGHT...Partly cloudy. Lows in the upper 50s. West
winds around 10 mph.
.FRIDAY THROUGH SATURDAY...Partly cloudy with chance of showers
and slight chance of thunderstorms. Lows 56 to 61. Highs 80 to
85. Southwest winds around 10 mph.
.SUNDAY...Mostly clear. Chance of showers and thunderstorms. Lows
in the upper 50s. Highs in the lower 80s. West winds around
10 mph.
.MONDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the upper 50s. Highs in the mid 80s.
.TUESDAY...Mostly sunny. Highs in the mid 80s.
$$
WYZ286-141100-
Absaroka Mountains/North Shoshone NF-
Including the city of Pahaska
257 AM MDT Wed Aug 13 2025
...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 8 PM MDT THIS
EVENING...
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Isolated showers in the morning, then scattered
showers and thunderstorms in the afternoon.
Some thunderstorms may produce gusty winds
early in the afternoon. Some thunderstorms may
produce gusty winds in the afternoon. Chance of
precipitation 50 percent.
Chance of thunder...30 percent.
Max temperature.....76-81.
24 hr trend......1 degree cooler.
Min humidity........20-26 percent.
24 hr trend......Unchanged.
20-foot winds.......West winds 10 to 15 mph until 1200, then around
20 mph. Gusts up to 35 mph.
Ridge top winds.....West 20 to 25 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....West around 20 mph until 1200, then around 30
mph.
Mixing Height.......4000-6000 ft agl until 1200, then 9400-11400 ft
agl.
Smoke dispersal.....Very good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Partly cloudy. Scattered showers early in the
evening. Isolated thunderstorms early in the
evening. Isolated showers early in the evening.
Some thunderstorms may produce gusty winds
early in the evening. Chance of precipitation
40 percent.
Chance of thunder...20 percent.
Min temperature.....50-55.
24 hr trend......1 degree cooler.
Max humidity........51-57 percent.
24 hr trend......1 percent drier.
Humidity recovery...Moderate.
20-foot winds.......West winds 15 to 20 mph. Gusts up to 35 mph
until 2400, then 25 mph.
Ridge top winds.....West around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 20 mph.
Mixing Height.......3400-5400 ft agl until 2400, then 400-1000 ft
agl.
Smoke dispersal.....Good to very good until 2400, then poor.
.THURSDAY...
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.....75-80.
24 hr trend......1 degree cooler.
Min humidity........20-26 percent.
24 hr trend......2 percent wetter.
20-foot winds.......West winds 10 to 15 mph until 1200, then around
20 mph. Gusts up to 30 mph.
Ridge top winds.....West 20 to 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 20 mph until 1200, then around 30
mph.
Mixing Height.......3200-5200 ft agl until 1200, then 8000-10000 ft
agl.
Smoke dispersal.....Good to very good until 1200, then excellent.
.Forecast days 3 through 7......
.THURSDAY NIGHT...Partly cloudy. Isolated showers and
thunderstorms in the evening. Lows in the lower 50s. West winds
around 10 mph.
.FRIDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the lower 50s. Highs in the mid 70s. West
winds around 10 mph.
.SATURDAY...Partly cloudy with chance of showers and
thunderstorms. Lows around 50. Highs in the lower 70s. West winds
around 10 mph.
.SUNDAY...Partly cloudy with chance of showers and thunderstorms.
Lows in the upper 40s. Highs in the lower 70s. West winds around
10 mph.
.MONDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the lower 50s. Highs in the mid 70s.
.TUESDAY...Mostly sunny. Highs in the mid 70s.
$$
WYZ140-141100-
Yellowstone National Park-
Including the cities of Lake, Mammoth, and Old Faithful
257 AM MDT Wed Aug 13 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 produce
gusty winds late in the afternoon. Chance of
precipitation 50 percent.
Chance of thunder...30 percent.
Max temperature.....76-81.
24 hr trend......1 degree cooler.
Min humidity........21-27 percent.
24 hr trend......Unchanged.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then
southwest 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.Less than 5 percent.
Transport winds.....Southwest around 15 mph until 1200, then west
around 30 mph.
Mixing Height.......3600-5600 ft agl until 1200, then 8400-10400 ft
agl.
Smoke dispersal.....Good to very good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Partly cloudy. Scattered showers early in the
evening. Isolated thunderstorms early in the
evening. Isolated showers early in the evening.
Some thunderstorms may produce gusty winds
early in the evening. Chance of precipitation
30 percent.
Chance of thunder...20 percent.
Min temperature.....45-50.
24 hr trend......3 degrees cooler.
Max humidity........61-67 percent.
24 hr trend......Unchanged.
Humidity recovery...Good.
20-foot winds.......Southwest winds 10 to 15 mph with gusts to
around 25 mph until 0300, then
downslope/downvalley 4-7 mph.
Ridge top winds.....Southwest 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 10 to 15 mph.
Mixing Height.......2400-4400 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.THURSDAY...
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...10 percent.
Max temperature.....74-79.
24 hr trend......2 degrees cooler.
Min humidity........22-28 percent.
24 hr trend......1 percent wetter.
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 around 15 mph until 1200, then west
around 30 mph.
Mixing Height.......2600-4600 ft agl until 1200, then 8600-10600 ft
agl.
Smoke dispersal.....Good until 1200, then excellent.
.Forecast days 3 through 7......
.THURSDAY NIGHT...Partly cloudy. Lows in the mid 40s. Southwest
winds around 10 mph.
.FRIDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the mid 70s.
Southwest winds around 10 mph.
.SATURDAY...Partly cloudy with slight chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the mid 70s. Winds
generally less than 10 mph.
.SUNDAY...Partly cloudy. Chance of showers and thunderstorms.
Lows in the mid 40s. Highs in the mid 70s. Winds generally less
than 10 mph.
.MONDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the mid 70s.
.TUESDAY...Mostly sunny. Highs in the upper 70s.
$$
WYZ415-141100-
North Zone Bridger Teton NF and Grand Teton NP-
Including the cities of Jackson and Moran
257 AM MDT Wed Aug 13 2025
...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 8 PM MDT THIS
EVENING...
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Scattered showers and thunderstorms in the
afternoon. Some thunderstorms may produce gusty
winds in the afternoon. Some thunderstorms may
produce gusty winds late in the afternoon.
Chance of precipitation 40 percent.
Chance of thunder...30 percent.
Max temperature.....78-83.
24 hr trend......1 degree cooler.
Min humidity........19-25 percent.
24 hr trend......1 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then
southwest 10 to 15 mph with gusts to around 30
mph until 1500, then west around 20 mph with
gusts to around 30 mph.
Ridge top winds.....Southwest 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph until 1200, then west
around 30 mph.
Mixing Height.......3000-5000 ft agl until 1200, then 10200-12200
ft agl.
Smoke dispersal.....Good until 1200, then excellent.
.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.....48-53.
24 hr trend......2 degrees cooler.
Max humidity........53-59 percent.
24 hr trend......Unchanged.
Humidity recovery...Moderate.
20-foot winds.......Southwest winds 10 to 15 mph with gusts to
around 30 mph until 0300, then
downslope/downvalley 4-7 mph.
Ridge top winds.....Southwest 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest 15 to 20 mph.
Mixing Height.......3600-5600 ft agl until 2400, then 400-1000 ft
agl.
Smoke dispersal.....Good to very good until 2400, then poor.
.THURSDAY...
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.....76-81.
24 hr trend......1 degree cooler.
Min humidity........22-28 percent.
24 hr trend......3 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then
southwest 10 to 15 mph with gusts to around 25
mph.
Ridge top winds.....Southwest around 10 mph until 1200, then west
around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph until 1200, then west
around 25 mph.
Mixing Height.......2800-4800 ft agl until 1200, then 8200-10200 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.Forecast days 3 through 7......
.THURSDAY NIGHT...Partly cloudy. Isolated showers and
thunderstorms in the evening. Lows in the upper 40s. Winds
generally less than 10 mph.
.FRIDAY...Partly cloudy. Slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the mid 70s. Winds
generally less than 10 mph.
.SATURDAY...Partly cloudy with chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the lower 70s. Winds
generally less than 10 mph.
.SUNDAY...Mostly clear. Chance of showers and thunderstorms. Lows
in the mid 40s. Highs in the mid 70s. Winds generally less than
10 mph.
.MONDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the mid 70s.
.TUESDAY...Mostly sunny. Highs in the upper 70s.
$$
WYZ416-141100-
West Wind River Mountains/East Zone Bridger Teton NF-
257 AM MDT Wed Aug 13 2025
...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 8 PM MDT THIS
EVENING...
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Isolated showers early in the afternoon.
Isolated thunderstorms in the afternoon.
Scattered showers in the afternoon. Some
thunderstorms may produce gusty winds in the
afternoon. Chance of precipitation 50 percent.
Chance of thunder...20 percent.
Max temperature.....74-79.
24 hr trend......Unchanged.
Min humidity........19-25 percent.
24 hr trend......1 percent drier.
20-foot winds.......East winds around 10 mph with higher gusts
until 0900, then west with gusts to around 30
mph until 1500, then around 20 mph with gusts
to around 30 mph.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph until 1200, then around 25
mph.
Mixing Height.......3400-5400 ft agl until 1200, then 9200-11200 ft
agl.
Smoke dispersal.....Good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Partly cloudy. Isolated showers early in the
evening. Chance of showers 20 percent.
Chance of thunder...0 percent.
Min temperature.....47-52.
24 hr trend......1 degree cooler.
Max humidity........52-58 percent.
24 hr trend......2 percent wetter.
Humidity recovery...Moderate.
20-foot winds.......Northwest winds 10 to 15 mph with gusts to
around 30 mph until 0300, then
downslope/downvalley 4-7 mph.
Ridge top winds.....Northwest 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......3400-5400 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Good to very good until 2400, then poor.
.THURSDAY...
Sky/weather.........Partly cloudy. Isolated thunderstorms early in
the afternoon. Scattered showers in the
afternoon. Scattered thunderstorms late in the
afternoon. Some thunderstorms may produce gusty
winds early in the afternoon. Some
thunderstorms may produce gusty winds late in
the afternoon. Chance of precipitation 50
percent.
Chance of thunder...30 percent.
Max temperature.....71-76.
24 hr trend......2 degrees cooler.
Min humidity........23-29 percent.
24 hr trend......4 percent wetter.
20-foot winds.......Southwest winds 10 to 15 mph with gusts to
around 25 mph.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....Southwest around 15 mph until 1200, then west
around 25 mph.
Mixing Height.......3000-5000 ft agl until 1200, then 6600-8600 ft
agl.
Smoke dispersal.....Fair to good until 1200, then very good to
excellent.
.Forecast days 3 through 7......
.THURSDAY NIGHT...Partly cloudy. Isolated showers and
thunderstorms in the evening. Lows in the upper 40s. Winds
generally less than 10 mph.
.FRIDAY THROUGH SATURDAY...Partly cloudy with chance of showers
and thunderstorms. Lows in the mid 40s. Highs 68 to 73. West
winds around 10 mph.
.SUNDAY...Mostly clear. Chance of showers and thunderstorms. Lows
in the mid 40s. Highs in the lower 70s. Winds generally less than
10 mph.
.MONDAY THROUGH TUESDAY...Mostly clear. Lows in the upper 40s.
Highs in the mid 70s.
$$
WYZ288-141100-
East Wind River Mountains/South Shoshone NF-
Including the cities of Dubois and South Pass
257 AM MDT Wed Aug 13 2025
...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 8 PM MDT THIS
EVENING...
.TODAY...
Sky/weather.........Mostly sunny then becoming partly cloudy.
Isolated showers early in the afternoon.
Isolated thunderstorms in the afternoon.
Scattered showers in the afternoon. Some
thunderstorms may produce gusty winds in the
afternoon. Chance of precipitation 50 percent.
Chance of thunder...20 percent.
Max temperature.....77-82.
24 hr trend......2 degrees warmer.
Min humidity........17-23 percent.
24 hr trend......1 percent drier.
20-foot winds.......West winds 15 to 20 mph. Gusts up to 25 mph
until 1200, then 35 mph.
Ridge top winds.....West 20 to 25 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 20 mph until 1200, then around 30
mph.
Mixing Height.......4200-6200 ft agl until 1200, then 10000-12000
ft agl.
Smoke dispersal.....Good to very good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Partly cloudy. Isolated showers early in the
evening. Chance of showers 20 percent.
Chance of thunder...0 percent.
Min temperature.....53-58.
24 hr trend......Unchanged.
Max humidity........40-46 percent.
24 hr trend......1 percent wetter.
Humidity recovery...Moderate.
20-foot winds.......West winds around 15 mph with gusts to around
30 mph.
Ridge top winds.....West around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 20 mph.
Mixing Height.......3400-5400 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Good to very good until 2400, then poor.
.THURSDAY...
Sky/weather.........Partly cloudy. Scattered showers and isolated
thunderstorms in the afternoon. Some
thunderstorms may produce gusty winds in the
afternoon. Chance of precipitation 50 percent.
Chance of thunder...20 percent.
Max temperature.....76-81.
24 hr trend......1 degree cooler.
Min humidity........19-25 percent.
24 hr trend......2 percent wetter.
20-foot winds.......West winds 15 to 20 mph with gusts to around 30
mph.
Ridge top winds.....West around 20 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....West 20 to 25 mph.
Mixing Height.......3200-5200 ft agl until 1200, then 7400-9400 ft
agl.
Smoke dispersal.....Good until 1200, then excellent.
.Forecast days 3 through 7......
.THURSDAY NIGHT...Partly cloudy. Isolated showers and
thunderstorms in the evening. Lows in the lower 50s. West winds
around 10 mph.
.FRIDAY...Partly cloudy with chance of showers and slight chance
of thunderstorms. Lows in the lower 50s. Highs in the mid 70s.
Southwest winds around 10 mph.
.SATURDAY...Partly cloudy with chance of showers and
thunderstorms. Lows in the lower 50s. Highs in the lower 70s.
West winds around 10 mph.
.SUNDAY...Mostly clear. Chance of showers and thunderstorms. Lows
in the lower 50s. Highs in the mid 70s. West winds around 10 mph.
.MONDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the lower 50s. Highs in the mid 70s.
.TUESDAY...Mostly sunny. Highs in the upper 70s.
$$
WYZ414-141100-
Salt and Wyoming Ranges/West Zone Bridger Teton NF-
Including the city of Afton
257 AM MDT Wed Aug 13 2025
...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 8 PM MDT THIS
EVENING...
.TODAY...
Sky/weather.........Mostly sunny then becoming 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.....80-85.
24 hr trend......1 degree warmer.
Min humidity........15-21 percent.
24 hr trend......2 percent drier.
20-foot winds.......Southwest winds 10 to 15 mph with gusts to
around 30 mph until 1500, then west around 20
mph with gusts to around 30 mph.
Ridge top winds.....Southwest 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph until 1200, then west
around 25 mph.
Mixing Height.......3600-5600 ft agl until 1200, then 10400-12400
ft agl.
Smoke dispersal.....Good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Partly cloudy. Isolated showers early in the
evening. Chance of showers 20 percent.
Chance of thunder...0 percent.
Min temperature.....47-52.
24 hr trend......1 degree cooler.
Max humidity........58-64 percent.
24 hr trend......2 percent wetter.
Humidity recovery...Good.
20-foot winds.......Southwest winds 10 to 15 mph. Gusts up to 30
mph until 2400, then 15 mph.
Ridge top winds.....Southwest 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......3400-5400 ft agl until 2400, then 400-1000 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.THURSDAY...
Sky/weather.........Partly cloudy. Isolated showers in the morning,
then scattered showers and thunderstorms in the
afternoon. Some thunderstorms may produce gusty
winds early in the afternoon. Some
thunderstorms may produce gusty winds late in
the afternoon. Chance of precipitation 40
percent.
Chance of thunder...30 percent.
Max temperature.....77-82.
24 hr trend......2 degrees cooler.
Min humidity........19-25 percent.
24 hr trend......4 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then west
10 to 15 mph. Gusts up to 25 mph.
Ridge top winds.....Southwest around 10 mph until 1200, then west
around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......2800-4800 ft agl until 1200, then 8000-10000 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.Forecast days 3 through 7......
.THURSDAY NIGHT...Partly cloudy. Isolated showers and
thunderstorms in the evening, then slight chance of showers after
midnight. Lows in the lower 50s. Winds generally less than
10 mph.
.FRIDAY...Partly cloudy. Chance of showers and thunderstorms.
Lows in the upper 40s. Highs in the upper 70s. Winds generally
less than 10 mph.
.SATURDAY...Partly cloudy with chance of showers and
thunderstorms. Lows in the upper 40s. Highs in the mid 70s. Winds
generally less than 10 mph.
.SUNDAY...Mostly clear. Chance of showers and thunderstorms. Lows
in the upper 40s. Highs in the mid 70s. Winds generally less than
10 mph.
.MONDAY THROUGH TUESDAY...Mostly clear. Lows in the upper 40s.
Highs in the upper 70s.
$$
WYZ279-141100-
Sweetwater County/Rock Springs BLM/Flaming Gorge NRA-
Including the cities of Green River, Rock Springs, and Wamsutter
257 AM MDT Wed Aug 13 2025
...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 8 PM MDT
THURSDAY...
.TODAY...
Sky/weather.........Mostly sunny then becoming 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.....82-87.
24 hr trend......2 degrees warmer.
Min humidity........13-19 percent.
24 hr trend......Unchanged.
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.....Southwest around 10 mph until 1200, then west
around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 10 mph until 1200, then around 20
mph.
Mixing Height.......2600-4600 ft agl until 1200, then 11600-13600
ft agl.
Smoke dispersal.....Poor to fair until 1200, then excellent.
.TONIGHT...
Sky/weather.........Partly cloudy. Isolated showers early in the
evening. Chance of showers 20 percent.
Chance of thunder...0 percent.
Min temperature.....54-59.
24 hr trend......Unchanged.
Max humidity........41-47 percent.
24 hr trend......2 percent wetter.
Humidity recovery...Moderate.
20-foot winds.......West winds 10 to 15 mph with gusts to around 25
mph until 2400, then downslope/downvalley 4-7
mph.
Ridge top winds.....West 10 to 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 10 to 15 mph.
Mixing Height.......5200-7200 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Good to very good until 2400, then poor.
.THURSDAY...
Sky/weather.........Partly cloudy. Scattered showers and isolated
thunderstorms in the afternoon. Some
thunderstorms may produce gusty winds in the
afternoon. Chance of precipitation 50 percent.
Chance of thunder...20 percent.
Max temperature.....80-85.
24 hr trend......2 degrees cooler.
Min humidity........20-26 percent.
24 hr trend......5 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
15 to 20 mph with gusts to around 30 mph.
Ridge top winds.....Southwest around 10 mph until 1200, then west
around 20 mph.
Chc of wetting rain.Less than 5 percent.
Transport winds.....West around 10 mph until 1200, then around 20
mph.
Mixing Height.......2600-4600 ft agl until 1200, then 6600-8600 ft
agl.
Smoke dispersal.....Poor to fair until 1200, then very good.
.Forecast days 3 through 7......
.THURSDAY NIGHT...Partly cloudy. Isolated showers and
thunderstorms in the evening, then slight chance of showers after
midnight. Lows in the mid 50s. Winds generally less than 10 mph.
.FRIDAY...Partly cloudy with chance of showers and slight chance
of thunderstorms. Lows in the lower 50s. Highs in the lower 80s.
Southwest winds around 10 mph.
.SATURDAY...Partly cloudy with chance of showers and
thunderstorms. Lows in the lower 50s. Highs around 80. Southwest
winds around 10 mph.
.SUNDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the lower 50s. Highs in the lower 80s.
Winds generally less than 10 mph.
.MONDAY THROUGH TUESDAY...Mostly clear. Lows in the lower 50s.
Highs in the mid 80s.
$$
WYZ277-278-141100-
Lincoln and Uinta Counties/Lower Elevations-
Upper Green River Basin/Rock Springs BLM-
Including the cities of Evanston, Fort Bridger, Kemmerer,
Big Piney, Farson, and Pinedale
257 AM MDT Wed Aug 13 2025
...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 8 PM MDT THIS
EVENING...
.TODAY...
Sky/weather.........Mostly sunny then becoming 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.....79-84.
24 hr trend......2 degrees warmer.
Min humidity........12-18 percent.
24 hr trend......1 percent drier.
20-foot winds.......Upslope/upvalley 5-9 mph until 1200, then west
15 to 20 mph with gusts to around 30 mph.
Ridge top winds.....Southwest around 10 mph until 1200, then west
around 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 10 mph until 1200, then around 25
mph.
Mixing Height.......3000-5000 ft agl until 1200, then 11800-13800
ft agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.TONIGHT...
Sky/weather.........Partly cloudy. Isolated showers early in the
evening. Chance of showers 20 percent.
Chance of thunder...0 percent.
Min temperature.....49-54.
24 hr trend......1 degree warmer.
Max humidity........52-58 percent.
24 hr trend......1 percent wetter.
Humidity recovery...Moderate.
20-foot winds.......Northwest winds 10 to 15 mph with gusts to
around 30 mph until 0300, then
downslope/downvalley 4-7 mph.
Ridge top winds.....Northwest around 20 mph until 2400, then around
10 mph.
Chc of wetting rain.Zero percent.
Transport winds.....Northwest around 20 mph until 2400, then west
around 10 mph.
Mixing Height.......4800-6800 ft agl until 2400, then 400-800 ft
agl.
Smoke dispersal.....Very good until 2400, then poor.
.THURSDAY...
Sky/weather.........Partly cloudy. Scattered showers and isolated
thunderstorms in the afternoon. Some
thunderstorms may produce gusty winds in the
afternoon. Chance of precipitation 50 percent.
Chance of thunder...20 percent.
Max temperature.....77-82.
24 hr trend......3 degrees cooler.
Min humidity........16-22 percent.
24 hr trend......5 percent wetter.
20-foot winds.......Upslope/upvalley 5-9 mph until 0900, then west
10 to 15 mph with gusts to around 30 mph.
Ridge top winds.....West around 10 mph until 1200, then around 20
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 7200-9200 ft
agl.
Smoke dispersal.....Fair to good until 1200, then very good to
excellent.
.Forecast days 3 through 7......
.THURSDAY NIGHT...Partly cloudy. Isolated showers and
thunderstorms in the evening, then slight chance of showers after
midnight. Lows in the lower 50s. Winds generally less than
10 mph.
.FRIDAY...Partly cloudy with chance of showers and thunderstorms.
Lows in the upper 40s. Highs in the lower 80s. Winds generally
less than 10 mph.
.SATURDAY...Partly cloudy with chance of showers and
thunderstorms. Lows in the mid 40s. Highs in the upper 70s. Winds
generally less than 10 mph.
.SUNDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the upper 40s. Highs around 80. Winds
generally less than 10 mph.
.MONDAY THROUGH TUESDAY...Mostly clear. Lows in the upper 40s.
Highs 80 to 85.
$$
WYZ289-141100-
Granite/Green/Ferris/Rattlesnake Mountains-
Including the city of Jeffrey City
257 AM MDT Wed Aug 13 2025
...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 8 PM MDT
THURSDAY...
.TODAY...
Sky/weather.........Mostly sunny then becoming 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.....82-87.
24 hr trend......2 degrees warmer.
Min humidity........10-16 percent.
24 hr trend......2 percent drier.
20-foot winds.......West winds 10 to 15 mph. Gusts up to 20 mph
until 1200, then 30 mph.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......4000-6000 ft agl until 1200, then 11000-13000
ft agl.
Smoke dispersal.....Good until 1200, then excellent.
.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.....58-63.
24 hr trend......Unchanged.
Max humidity........38-44 percent.
24 hr trend......Unchanged.
Humidity recovery...Moderate.
20-foot winds.......West winds 10 to 15 mph. Gusts up to 25 mph
until 2400, then 15 mph.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West around 15 mph.
Mixing Height.......3400-5400 ft agl until 2400, then 400-600 ft
agl.
Smoke dispersal.....Good until 2400, then poor.
.THURSDAY...
Sky/weather.........Partly cloudy. Scattered showers and isolated
thunderstorms in the afternoon. Some
thunderstorms may produce gusty winds in the
afternoon. Chance of precipitation 40 percent.
Chance of thunder...20 percent.
Max temperature.....82-87.
24 hr trend......Unchanged.
Min humidity........12-18 percent.
24 hr trend......2 percent wetter.
20-foot winds.......West winds 10 to 15 mph with gusts to around 30
mph until 1500, then around 20 mph with gusts
to around 30 mph.
Ridge top winds.....West 15 to 20 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......2800-4800 ft agl until 1200, then 8800-10800 ft
agl.
Smoke dispersal.....Fair to good until 1200, then excellent.
.Forecast days 3 through 7......
.THURSDAY NIGHT...Partly cloudy. Isolated showers and
thunderstorms in the evening, then slight chance of showers after
midnight. Lows in the upper 50s. Southwest winds around 10 mph.
.FRIDAY THROUGH SATURDAY...Partly cloudy with chance of showers
and slight chance of thunderstorms. Lows in the mid 50s. Highs
81 to 86. Southwest winds around 10 mph.
.SUNDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the mid 50s. Highs in the lower 80s.
Southwest winds around 10 mph.
.MONDAY THROUGH TUESDAY...Mostly clear. Lows in the mid 50s.
Highs in the mid 80s.
$$
WYZ300-141100-
Casper Mountain-
257 AM MDT Wed Aug 13 2025
...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 8 PM MDT
THURSDAY...
.TODAY...
Sky/weather.........Sunny then becoming 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.....82-87.
24 hr trend......4 degrees warmer.
Min humidity........13-19 percent.
24 hr trend......6 percent drier.
20-foot winds.......South winds around 10 mph until 0900, then
west. Gusts up to 25 mph.
Ridge top winds.....Southwest around 15 mph until 1200, then west.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph until 1200, then west
around 25 mph.
Mixing Height.......3400-5400 ft agl until 1200, then 11000-13000
ft agl.
Smoke dispersal.....Good until 1200, then excellent.
.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.....59-64.
24 hr trend......1 degree warmer.
Max humidity........36-42 percent.
24 hr trend......6 percent drier.
Humidity recovery...Poor.
20-foot winds.......Northwest winds around 10 mph until 2100, then
south. Gusts up to 25 mph.
Ridge top winds.....West around 15 mph until 2400, then south.
Chc of wetting rain.Zero percent.
Transport winds.....Southwest around 15 mph.
Mixing Height.......2600-4600 ft agl until 2400, then 200-400 ft
agl.
Smoke dispersal.....Fair to good until 2400, then poor.
.THURSDAY...
Sky/weather.........Mostly sunny then becoming 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.....81-86.
24 hr trend......1 degree cooler.
Min humidity........16-22 percent.
24 hr trend......3 percent wetter.
20-foot winds.......Southwest winds around 10 mph until 1200, then
west. Gusts up to 20 mph.
Ridge top winds.....West around 15 mph.
Chc of wetting rain.Zero percent.
Transport winds.....West 15 to 20 mph.
Mixing Height.......3200-5200 ft agl until 1200, then 9800-11800 ft
agl.
Smoke dispersal.....Good until 1200, then excellent.
.Forecast days 3 through 7......
.THURSDAY NIGHT...Partly cloudy. Isolated showers and
thunderstorms in the evening. Lows in the upper 50s. Winds
generally less than 10 mph.
.FRIDAY...Partly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the mid 50s. Highs in the lower 80s.
Southwest winds around 10 mph.
.SATURDAY...Partly cloudy with chance of showers and
thunderstorms. Lows in the mid 50s. Highs in the upper 70s.
Southwest winds around 10 mph.
.SUNDAY...Mostly clear. Slight chance of showers and
thunderstorms. Lows in the mid 50s. Highs in the lower 80s.
Southwest winds around 10 mph.
.MONDAY THROUGH TUESDAY...Mostly clear. Lows in the mid 50s.
Highs in the lower 80s.
$$