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Home Return to list Fire Weather Watch 0010 Issued by the Riverton Forecast Office
Action: New Issued At: 2026-07-31 10:54:21
635
WWUS85 KRIW 311554
RFWRIW
URGENT - FIRE WEATHER MESSAGE
National Weather Service Riverton WY
954 AM MDT Fri Jul 31 2026
WYZ277>279-289-011300-
/O.NEW.KRIW.FW.A.0010.260802T1900Z-260804T0300Z/
Lincoln and Uinta Counties/Lower Elevations-
Upper Green River Basin/Rock Springs BLM-
Sweetwater County/Rock Springs BLM/Flaming Gorge NRA-
Granite/Green/Ferris/Rattlesnake Mountains-
954 AM MDT Fri Jul 31 2026
...FIRE WEATHER WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH
MONDAY EVENING...
The National Weather Service in Riverton has issued a Fire Weather
Watch, which is in effect from Sunday afternoon through Monday
evening.
* IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and
Wind Shift with a Cold Front 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.
* COLD FRONT:
* WIND: West 10 to 20 mph with gusts up to 35 mph.
* HUMIDITY: As low as 6 percent Sunday and 8 percent Monday. Poor
humidity recovery Sunday night to around 20 to 35 percent.
* TEMPERATURES: Highs in the mid-to-upper 90s Sunday and around 90
Monday.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Fire Weather Watch means that critical fire weather conditions
are forecast to occur. Listen for later forecasts and possible Red
Flag Warnings.
&&
$$
WYZ275-276-282-283-285-011300-
/O.NEW.KRIW.FW.A.0010.260802T1900Z-260803T0300Z/
North Bighorn Basin/Worland BLM-Cody Foothills-
South Bighorn Basin/Worland BLM-
Upper Wind River Basin/Wind River Basin-South Bighorn Mountains-
954 AM MDT Fri Jul 31 2026
...FIRE WEATHER WATCH IN EFFECT FROM SUNDAY AFTERNOON THROUGH
SUNDAY EVENING...
The National Weather Service in Riverton has issued a Fire Weather
Watch, which is in effect from Sunday afternoon through Sunday
evening.
* IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and
Wind Shift with a Cold Front could cause erratic fire behavior.
* AFFECTED AREA:
In Central WY Fire Zones...283...285.
In North Central WY Fire Zones...275...276...282.
* COUNTIES AFFECTED:
In Central WY...Fremont...Natrona.
In North Central WY...Big Horn...Hot Springs...Johnson...Park
Washakie.
* COLD FRONT:
* WIND: West 10 to 20 mph with gusts up to 35 mph.
* HUMIDITY: As low as 6 percent.
* TEMPERATURES: Highs around 100.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Fire Weather Watch means that critical fire weather conditions
are forecast to occur. Listen for later forecasts and possible Red
Flag Warnings.
&&
$$
http://weather.gov/riverton
Action: Continued Issued At: 2026-08-01 02:36:46 289 WWUS85 KRIW 010736 RFWRIW URGENT - FIRE WEATHER MESSAGE National Weather Service Riverton WY 136 AM MDT Sat Aug 1 2026 WYZ277>279-289-020000- /O.CON.KRIW.FW.A.0010.260802T1900Z-260804T0300Z/ Lincoln and Uinta Counties/Lower Elevations- Upper Green River Basin/Rock Springs BLM- Sweetwater County/Rock Springs BLM/Flaming Gorge NRA- Granite/Green/Ferris/Rattlesnake Mountains- 136 AM MDT Sat Aug 1 2026 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY EVENING... * IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and Wind Shift with a Cold Front 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 35 mph. * HUMIDITY: As low as 6 percent Sunday and 8 percent Monday. Poor humidity recovery Sunday night to around 20 to 35 percent. * TEMPERATURES: Highs in the mid-to-upper 90s Sunday and around 90 Monday. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings. && $$ WYZ275-276-282-283-285-020000- /O.CON.KRIW.FW.A.0010.260802T1900Z-260803T0300Z/ North Bighorn Basin/Worland BLM-Cody Foothills- South Bighorn Basin/Worland BLM- Upper Wind River Basin/Wind River Basin-South Bighorn Mountains- 136 AM MDT Sat Aug 1 2026 ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY EVENING... * IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and Wind Shift with a Cold Front could cause erratic fire behavior. * AFFECTED AREA: In Central WY Fire Zones...283...285. In North Central WY Fire Zones...275...276...282. * COUNTIES AFFECTED: In Central WY...Fremont...Natrona. In North Central WY...Big Horn...Hot Springs...Johnson...Park...Washakie. * WIND: West 15 to 25 mph with gusts up to 35 mph. * HUMIDITY: As low as 5 percent. * TEMPERATURES: Highs in the upper 90s to low 100s. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings. && $$ http://weather.gov/riverton Action: Upgraded Issued At: 2026-08-01 14:28:21
723
WWUS85 KRIW 011928
RFWRIW
URGENT - FIRE WEATHER MESSAGE
National Weather Service Riverton WY
128 PM MDT Sat Aug 1 2026
WYZ277>279-289-021300-
/O.UPG.KRIW.FW.A.0010.260802T1900Z-260804T0300Z/
/O.NEW.KRIW.FW.W.0017.260802T1900Z-260804T0300Z/
Lincoln and Uinta Counties/Lower Elevations-
Upper Green River Basin/Rock Springs BLM-
Sweetwater County/Rock Springs BLM/Flaming Gorge NRA-
Granite/Green/Ferris/Rattlesnake Mountains-
128 PM MDT Sat Aug 1 2026
...RED FLAG WARNING IN EFFECT FROM 1 PM SUNDAY TO 9 PM MDT
MONDAY...
The National Weather Service in Riverton has issued a Red Flag
Warning, which is in effect from 1 PM Sunday to 9 PM MDT Monday.
the Fire Weather Watch is no longer in effect.
* IMPACTS: Low Humidities...Hot 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: Northwest 10 to 20 mph with gusts to 35 mph.
* HUMIDITY: 5 to 10 percent.
* TEMPERATURES: Highs in the upper 80s and low 90s. Lows in the
upper 50s to low 60s.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Red Flag Warning means that critical fire weather conditions are
either occurring now....or will shortly. A combination of strong
winds...low relative humidity...and warm temperatures can
contribute to extreme fire behavior.
&&
$$
WYZ275-276-282-283-285-021300-
/O.UPG.KRIW.FW.A.0010.260802T1900Z-260803T0300Z/
/O.NEW.KRIW.FW.W.0017.260802T1900Z-260803T0300Z/
North Bighorn Basin/Worland BLM-Cody Foothills-
South Bighorn Basin/Worland BLM-
Upper Wind River Basin/Wind River Basin-South Bighorn Mountains-
128 PM MDT Sat Aug 1 2026
...RED FLAG WARNING IN EFFECT FROM 1 PM TO 9 PM MDT SUNDAY...
The National Weather Service in Riverton has issued a Red Flag
Warning, which is in effect from 1 PM to 9 PM MDT Sunday. the Fire
Weather Watch is no longer in effect.
* IMPACTS: Low Humidities...Hot Temperatures...and Strong Gusty
Winds could cause erratic fire behavior.
* AFFECTED AREA:
In Central WY Fire Zones...283...285.
In North Central WY Fire Zones...275...276...282.
* COUNTIES AFFECTED:
In Central WY...Fremont...Natrona.
In North Central WY...Big Horn...Hot Springs...Johnson...Park
Washakie.
* WIND: West 10 to 20 mph with gusts to 30 mph.
* HUMIDITY: 5 to 10 percent.
* TEMPERATURES: Highs in the upper 90s to low 100s.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Red Flag Warning means that critical fire weather conditions are
either occurring now....or will shortly. A combination of strong
winds...low relative humidity...and warm temperatures can
contribute to extreme fire behavior.
&&
$$
http://weather.gov/riverton
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