Red Flag Warning
* IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and
Strong Gusty Winds could cause erratic fire behavior.
* AFFECTED AREA:
In Southwest WY Fire Zones...277...279.
In West Central WY Fire Zone....278.
* COUNTIES AFFECTED:
In Southwest WY...Sweetwater...Uinta.
In West Central WY...Lincoln...Sublette.
* WIND: West 20 to 30 mph with gusts up to 45 mph.
* HUMIDITY: As low as 15 percent.
* TEMPERATURES: Highs in mid 60s to near 70.
From: Mar 30, 2026 09:01
Until: Mar 31, 2026 03:00
Red Flag Warning
* IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and
Strong Gusty Winds could cause erratic fire behavior.
* AFFECTED AREA:
In Central WY...Fire Weather Zones 280...289 and 300.
upper 60s to middle 70s
* COUNTIES AFFECTED:
In Central WY...Fremont...Natrona.
In Southwest WY...Sweetwater.
* WIND: Southwest 20 to 30 mph with gusts up to 50 mph.
* HUMIDITY: As low as 13 percent.
* TEMPERATURES: Highs in the mid 60s to near 70.
From: Mar 30, 2026 09:01
Until: Mar 31, 2026 03:00
Red Flag Warning
* IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and
Strong Gusty Winds could cause erratic fire behavior.
* AFFECTED AREA:
In Southwest WY Fire Zones...277...279.
In West Central WY Fire Zone....278.
* COUNTIES AFFECTED:
In Southwest WY...Sweetwater...Uinta.
In West Central WY...Lincoln...Sublette.
* WIND: West 15 to 25 mph with gusts up to 35 mph today and
Sunday. West 20 to 30 mph with gusts up to 50 mph Monday. Wind
will decrease at night.
* HUMIDITY: As low as 11 percent. RH recovery will be fair tonight
and Sunday night.
* TEMPERATURES: Highs in the mid 60s to low 70s. Lows in the upper
20s to upper 30s.
From: Mar 28, 2026 08:16
Until: Mar 29, 2026 02:30
Red Flag Warning
* IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and
Strong Gusty Winds could cause erratic fire behavior.
* AFFECTED AREA:
In Central WY...Fire Weather Zones 280...289 and 300.
* COUNTIES AFFECTED:
In Central WY...Fremont...Natrona.
In Southwest WY...Sweetwater.
* WIND: West 20 to 25 mph with gusts up to 35 mph today and Sunday.
West 30 to 40 mph with gusts up to 50 mph Monday. Wind will
decrease at night.
* HUMIDITY: As low as 10 percent. RH recovery will be fair to poor
tonight and Sunday night.
* TEMPERATURES: Highs in the low to mid 70s. Lows in the lower
40s.
From: Mar 28, 2026 08:16
Until: Mar 29, 2026 02:30
Red Flag Warning
The National Weather Service in Riverton has issued a Red Flag
Warning, which is in effect from noon Saturday to 9 PM MDT Monday.
the Fire Weather Watch is no longer in effect.
* IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and
Strong Gusty Winds could cause erratic fire behavior.
* AFFECTED AREA:
In Southwest WY Fire Zones...277...279.
In West Central WY Fire Zone....278.
* COUNTIES AFFECTED:
In Southwest WY...Sweetwater...Uinta.
In West Central WY...Lincoln...Sublette.
* WIND: West 15 to 25 mph with gusts up to 35 mph Saturday and
Sunday. West 20 to 30 mph with gusts up to 50 mph Monday. Wind
will decrease at night.
* HUMIDITY: As low as 10 percent. Poor to Fair humidity recovery
each night.
* TEMPERATURES: Highs in the mid 60s to mid 70s. Lows in the lower
to upper 30s.
From: Mar 27, 2026 20:02
Until: Mar 28, 2026 13:00
Red Flag Warning
The National Weather Service in Riverton has issued a Red Flag
Warning, which is in effect from noon Saturday to 9 PM MDT Monday.
the Fire Weather Watch is no longer in effect.
* IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and
Strong Gusty Winds could cause erratic fire behavior.
* AFFECTED AREA:
In Central WY...Fire Weather Zones 280...289 and 300.
* COUNTIES AFFECTED:
In Central WY...Fremont...Natrona.
In Southwest WY...Sweetwater.
* WIND: West 20 to 35 mph with gusts up to 55 mph Saturday and
Sunday. West 30 to 40 mph with gusts up to 65 mph Monday. Wind
will decrease at night.
* HUMIDITY: As low as 10 percent. Poor Humidity recovery each
night.
* TEMPERATURES: Highs in the mid 60s to lower 70s. Lows in the
upper 30s to lower 40s.
From: Mar 27, 2026 20:02
Until: Mar 28, 2026 13:00
Red Flag Warning
* IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and
Strong Gusty Winds could cause erratic fire behavior.
* AFFECTED AREA:
In Southwest WY Fire Zones...277...279.
In West Central WY Fire Zone....278.
* COUNTIES AFFECTED:
In Southwest WY...Sweetwater...Uinta.
In West Central WY...Lincoln...Sublette.
* WIND: West 20 to 30 mph with gusts up to 45 mph.
* HUMIDITY: As low as 10 percent.
* TEMPERATURES: Highs in the 60s.
From: Mar 26, 2026 08:46
Until: Mar 27, 2026 03:00
Red Flag Warning
* IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and
Strong Gusty Winds could cause erratic fire behavior.
* AFFECTED AREA:
In Southwest WY Fire Zones...277...279.
In West Central WY Fire Zone....278.
* COUNTIES AFFECTED:
In Southwest WY...Sweetwater...Uinta.
In West Central WY...Lincoln...Sublette.
* WIND: West 20 to 30 mph with gusts up to 45 mph.
* HUMIDITY: As low as 10 percent.
* TEMPERATURES: Lows around 40. Highs in the 60s.
From: Mar 26, 2026 02:59
Until: Mar 26, 2026 13:00
Red Flag Warning
* IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and
Strong Gusty Winds could cause erratic fire behavior.
* AFFECTED AREA:
In Southwest WY Fire Zones...277...279.
In West Central WY Fire Zone....278.
* COUNTIES AFFECTED:
In Southwest WY...Sweetwater...Uinta.
In West Central WY...Lincoln...Sublette.
* WIND: West 20 to 30 mph with gusts up to 45 mph.
* HUMIDITY: As low as 11 percent Wednesday. Poor recovery Wednesday
night, 40 to 50 percent. As low as 12 percent Thursday.
* TEMPERATURES: Highs in the upper 70s Wednesday and low to mid 60s
Thursday.
From: Mar 25, 2026 18:39
Until: Mar 26, 2026 08:45
Red Flag Warning
* IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and
Strong Gusty Winds could cause erratic fire behavior.
* AFFECTED AREA:
In Central WY Fire Zone....289.
In Southwest WY Fire Zones...277...279.
In West Central WY Fire Zone....278.
* COUNTIES AFFECTED:
In Central WY...Fremont...Natrona.
In Southwest WY...Sweetwater...Uinta.
In West Central WY...Lincoln...Sublette.
* WIND: West 15 to 25 mph with gusts up to 45 mph.
* HUMIDITY: As low as 11 percent.
* TEMPERATURES: Highs in the mid to upper 70s.
From: Mar 24, 2026 20:11
Until: Mar 26, 2026 03:00
Red Flag Warning
* IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and
Strong Gusty Winds could cause erratic fire behavior.
* AFFECTED AREA:
In Central WY Fire Zones...280...283...289.
In North Central WY Fire Zone....281.
* COUNTIES AFFECTED:
In Central WY...Fremont...Natrona.
In North Central WY...Johnson.
In Southwest WY...Sweetwater.
* WIND: West 20 to 30 mph with gusts up to 45 mph.
* HUMIDITY: As low as 10 percent.
* TEMPERATURES: Highs in the upper 70s to low 80s.
From: Mar 25, 2026 18:39
Until: Mar 26, 2026 03:00
Red Flag Warning
* IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and
Strong Gusty Winds could cause erratic fire behavior.
* AFFECTED AREA:
In Southwest WY Fire Zones...277...279.
In West Central WY Fire Zone....278.
* COUNTIES AFFECTED:
In Southwest WY...Sweetwater...Uinta.
In West Central WY...Lincoln...Sublette.
* WIND: West 20 to 30 mph with gusts up to 45 mph.
* HUMIDITY: As low as 12 percent.
* TEMPERATURES: Highs in the upper 70s Wednesday and low to mid
60s Thursday.
From: Mar 25, 2026 09:05
Until: Mar 26, 2026 01:00
Red Flag Warning
* IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and
Strong Gusty Winds could cause erratic fire behavior.
* AFFECTED AREA:
In Central WY Fire Zones...280...283...289.
In North Central WY Fire Zone....281.
* COUNTIES AFFECTED:
In Central WY...Fremont...Natrona.
In North Central WY...Johnson.
In Southwest WY...Sweetwater.
* WIND: West 20 to 30 mph with gusts up to 45 mph.
* HUMIDITY: As low as 11 percent.
* TEMPERATURES: Highs in the upper 70s to low 80s.
From: Mar 25, 2026 09:05
Until: Mar 26, 2026 01:00
Fire Weather Watch
The National Weather Service in Riverton has issued a Fire Weather
Watch, which is in effect from Wednesday afternoon through
Wednesday evening.
* IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and
Strong Gusty Winds could cause erratic fire behavior.
* AFFECTED AREA:
In Central WY Fire Zone....289.
In Southwest WY Fire Zones...277...279.
* COUNTIES AFFECTED:
In Central WY...Fremont...Natrona.
In Southwest WY...Sweetwater...Uinta.
In West Central WY...Lincoln.
* WIND: West 20 to 30 mph with gusts up to 55 mph.
* HUMIDITY: As low as 15 percent.
* TEMPERATURES: Highs in the mid 70s.
From: Mar 23, 2026 08:48
Until: Mar 24, 2026 03:00
Red Flag Warning
* IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and
Strong Gusty Winds could cause erratic fire behavior.
* AFFECTED AREA:
In Central WY Fire Zones...280...289.
In North Central WY Fire Zone....281.
* COUNTIES AFFECTED:
In Central WY...Fremont...Natrona.
In North Central WY...Johnson.
In Southwest WY...Sweetwater.
* WIND: Southwest 20 to 30 mph with gusts up to 45 mph.
* HUMIDITY: 9 to 15 percent.
* TEMPERATURES: Highs in the upper 70s to mid 80s.
From: Mar 21, 2026 06:35
Until: Mar 22, 2026 03:00
Red Flag Warning
* IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and
Strong Gusty Winds could cause erratic fire behavior.
* AFFECTED AREA:
In Southwest WY Fire Zones...277...279.
In West Central WY Fire Zone....278.
* COUNTIES AFFECTED:
In Southwest WY...Sweetwater...Uinta.
In West Central WY...Lincoln...Sublette.
* WIND: Southwest 15 to 25 mph with gusts up to 40 mph.
* HUMIDITY: 8 to 14 percent.
* TEMPERATURES: Highs in the 70s.
From: Mar 21, 2026 06:35
Until: Mar 22, 2026 03:00
Red Flag Warning
* IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and
Strong Gusty Winds could cause erratic fire behavior.
* AFFECTED AREA:
In Southwest WY Fire Zones...277...279.
In West Central WY Fire Zone....278.
* COUNTIES AFFECTED:
In Southwest WY...Sweetwater...Uinta.
In West Central WY...Lincoln...Sublette.
* WIND: West 15 to 25 mph with gusts up to 40 mph, especially on
Saturday.
* HUMIDITY: As low as 10 percent.
* TEMPERATURES: Highs in the lower 70s. Lows in the upper 30s.
* ADDITIONAL DETAILS: Conditions are expected to improve during the
overnight hours.
From: Mar 19, 2026 18:55
Until: Mar 22, 2026 03:00
Red Flag Warning
* IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and
Strong Gusty Winds could cause erratic fire behavior.
* AFFECTED AREA:
In Southwest WY Fire Zones...277...279.
In West Central WY Fire Zone....278.
* COUNTIES AFFECTED:
In Southwest WY...Sweetwater...Uinta.
In West Central WY...Lincoln...Sublette.
* WIND: West 10 to 20 mph with gusts up to 25 to 30 mph Friday; 20
to 30 mph with gusts to 40 to 45 mph Saturday.
* HUMIDITY: 8 to 13 percent.
* TEMPERATURES: Highs in the 70s.
From: Mar 20, 2026 11:11
Until: Mar 21, 2026 00:00
Red Flag Warning
* IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and
Strong Gusty Winds could cause erratic fire behavior.
* AFFECTED AREA:
In Central WY Fire Zones...280...289.
In North Central WY Fire Zone....281.
* COUNTIES AFFECTED:
In Central WY...Fremont...Natrona.
In North Central WY...Johnson.
In Southwest WY...Sweetwater.
* WIND: Southwest 15 to 25 mph with gusts up to 35 mph Friday; west
to southwest 20 to 30 mph with gusts to 45 mph Saturday.
* HUMIDITY: 10 to 15 percent.
* TEMPERATURES: Highs in the mid 70s to lower 80s.
From: Mar 20, 2026 11:11
Until: Mar 21, 2026 00:00
High Wind Warning
* WHAT...West winds 30 to 35 mph with gusts up to 65 mph possible
across Sweetwater County; West winds of 25 to 30 mph with gusts up
to 60 mph possible across southern Lincoln County.
* WHERE...East Sweetwater County, Flaming Gorge, Rock Springs and
Green River, and South Lincoln County.
* WHEN...From 8 AM this morning to 5 PM MST this afternoon.
* IMPACTS...Travel could be difficult, especially for high profile
vehicles.
* ADDITIONAL DETAILS...The strongest winds are expected to occur in
an area roughly from Green River and Rock Springs to Point of
Rocks, including I-80.
From: Feb 25, 2026 09:51
Until: Feb 26, 2026 00:00
High Wind Warning
* WHAT...West winds 30 to 40 mph with gusts up to 60 mph across
lower elevations of Natrona County; West winds 30 to 40 mph with
gusts up to 70 mph across the Green Mountains and Rattlesnake
Range.
* WHERE...Green Mountains and Rattlesnake Range and Natrona County
Lower Elevations.
* WHEN...From 8 AM this morning to 5 PM MST this afternoon.
* IMPACTS...Travel could be difficult, especially for high profile
vehicles.
* ADDITIONAL DETAILS...The strongest wind gusts are expected to
occur along Wyoming Highway 287 from Jeffery City to Muddy Gap, as
well as Highway 258 on the south side of Casper.
From: Feb 25, 2026 09:51
Until: Feb 26, 2026 00:00
High Wind Watch
* WHAT...West winds 30 to 40 mph with gusts up to 60 mph across
lower elevations of Natrona County; West winds 30 to 40 mph with
gusts up to 70 mph across the Green Mountains and Rattlesnake
Range.
* WHERE...Green Mountains and Rattlesnake Range and Natrona County
Lower Elevations.
* WHEN...From 8 AM MST Wednesday morning through 5 PM MST Wednesday
evening.
* IMPACTS...Travel could be difficult, especially for high profile
vehicles.
* ADDITIONAL DETAILS...The strongest wind gusts are expected to
occur along Wyoming Highway 287 from Jeffery City to Muddy Gap, as
well as Highway 258 on the south side of Casper.
From: Feb 23, 2026 18:56
Until: Feb 25, 2026 14:00
High Wind Watch
* WHAT...West winds 30 to 35 mph with gusts up to 65 mph possible
across Sweetwater County; West winds of 25 to 30 mph with gusts up
to 60 mph possible across southern Lincoln County.
* WHERE...East Sweetwater County, Flaming Gorge, Rock Springs and
Green River, and South Lincoln County.
* WHEN...From 8 AM MST Wednesday morning through 5 PM MST Wednesday
evening.
* IMPACTS...Travel could be difficult, especially for high profile
vehicles.
* ADDITIONAL DETAILS...The strongest winds are expected to occur in
an area roughly from Green River and Rock Springs to Point of
Rocks, including I-80.
From: Feb 23, 2026 18:56
Until: Feb 25, 2026 14:00
Winter Weather Advisory
* WHAT...Snow expected. Total snow accumulations between 2 and 6
inches. Winds gusting as high as 45 mph.
* WHERE...Casper Mountain and Green Mountains and Rattlesnake Range.
* WHEN...From 5 PM this afternoon to 11 AM MST Thursday.
* IMPACTS...Plan on slippery road conditions. The hazardous
conditions could impact the Wednesday evening and Thursday morning
commutes.
* ADDITIONAL DETAILS...The heaviest snowfall is forecast to occur
late Wednesday evening into the early morning hours Thursday.
Winds will be gusting up to 45 mph during this time, which may
lead to blowing snow and reduced visibilities.
From: Feb 18, 2026 19:06
Until: Feb 19, 2026 12:15
Winter Weather Advisory
* WHAT...Snow expected. Total snow accumulations between 3 and 5
inches, except 5 to 8 inches on Casper Mountain. Winds gusting as
high as 35 mph.
* WHERE...Casper Mountain, Green Mountains and Rattlesnake Range,
and Natrona County Lower Elevations.
* WHEN...From 5 PM this afternoon to 11 AM MST Thursday. The
steadiest snow will fall Wednesday night.
* IMPACTS...Plan on slippery road conditions. The hazardous
conditions could impact the Wednesday evening and Thursday morning
commutes.
From: Feb 18, 2026 11:58
Until: Feb 19, 2026 00:00
High Wind Watch
* WHAT...Southwest winds 30 to 40 mph with gusts up to 65 mph
possible.
* WHERE...Green Mountains and Rattlesnake Range, Natrona County
Lower Elevations, and East Sweetwater County.
* WHEN...From Monday evening through Tuesday evening.
* IMPACTS...Damaging winds could blow down trees and power lines.
Travel could be difficult, especially for high profile vehicles.
From: Feb 15, 2026 17:34
Until: Feb 16, 2026 14:00
