Red Flag Warning
URGENT - FIRE WEATHER MESSAGE
National Weather Service Cheyenne WY
1257 PM MDT Sun Sep 13 2026
WYZ418>422-432-433-141200-
/O.UPG.KCYS.FW.A.0021.260914T1800Z-260915T0200Z/
/O.NEW.KCYS.FW.W.0043.260914T1800Z-260915T0200Z/
Middle North Platte River Basin/Niobrara and Converse High Plains-
North Laramie Range and Adjacent High Plains-
North Laramie Valley/Shirley Basin-
Ferris/Seminoe/Shirley Mountains-Central and West Carbon-
Bordeaux/Chugwater/Wheatland-Goshen/Middle-
Lower North Platte River Basin-
1257 PM MDT Sun Sep 13 2026
...RED FLAG WARNING IN EFFECT FROM NOON TO 8 PM MDT MONDAY FOR LOW
RH AND GUSTY WINDS FOR FIRE WEATHER ZONES 417, 418, 419, 420,
421, 422, 423, 427, 432, AND 433...
The National Weather Service in Cheyenne has issued a Red Flag
Warning, which is in effect from noon to 8 PM MDT Monday. The
Fire Weather Watch is no longer in effect.
* AFFECTED AREA...Fire weather zones 417-423, 427, 432, and 433.
* WIND...West to Northwest winds 20 to 40 mph, gusts between 45
to 60 mph.
* HUMIDITY...Relative humidities as low as 10 to 20%.
* IMPACTS...any fires that develop will likely spread rapidly.
Outdoor burning is not recommended.
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.
&&
$$
URGENT - FIRE WEATHER MESSAGE
National Weather Service Cheyenne WY
1257 PM MDT Sun Sep 13 2026
WYZ417-423-427-141200-
/O.NEW.KCYS.FW.W.0043.260914T1800Z-260915T0200Z/
Niobrara/Lower Elevations of Converse/Thunder Basin National
Grassland-Southwest Carbon County-North Snowy Range Foothills-
1257 PM MDT Sun Sep 13 2026
...RED FLAG WARNING IN EFFECT FROM NOON TO 8 PM MDT MONDAY FOR
LOW RH AND GUSTY WINDS FOR FIRE WEATHER ZONES 417, 418, 419, 420,
421, 422, 423, 427, 432, AND 433...
The National Weather Service in Cheyenne has issued a Red Flag
Warning, which is in effect from noon to 8 PM MDT Monday. The
Fire Weather Watch is no longer in effect.
* AFFECTED AREA...Fire weather zones 417-423, 427, 432, and 433.
* WIND...West to Northwest winds 20 to 40 mph, gusts between 45
to 60 mph.
* HUMIDITY...Relative humidities as low as 10 to 20%.
* IMPACTS...any fires that develop will likely spread rapidly.
Outdoor burning is not recommended.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Red Flag Warning means that critical fire weather conditions
are either occurring now, or will shortly. A combination of
strong winds, low relative humidity, and warm temperatures can
contribute to extreme fire behavior.
&&
$$
URGENT - FIRE WEATHER MESSAGE
National Weather Service Riverton WY
1003 AM MDT Sun Sep 13 2026
WYZ279-280-283-289-300-141300-
/O.UPG.KRIW.FW.A.0013.260914T1800Z-260915T0200Z/
/O.NEW.KRIW.FW.W.0028.260914T1800Z-260915T0200Z/
Sweetwater County/Rock Springs BLM/Flaming Gorge NRA-
Natrona County/Casper BLM-Upper Wind River Basin/Wind River Basin-
Granite/Green/Ferris/Rattlesnake Mountains-Casper Mountain-
1003 AM MDT Sun Sep 13 2026
...RED FLAG WARNING IN EFFECT FROM NOON TO 8 PM MDT MONDAY...
The National Weather Service in Riverton has issued a Red Flag
Warning, which is in effect from noon to 8 PM MDT Monday. the Fire
Weather Watch is no longer in effect.
* AFFECTED AREA:
In Central WY Fire Zones...280...283...289...300.
In Southwest WY Fire Zone....279.
* COUNTIES AFFECTED:
In Central WY...Fremont...Natrona.
In Southwest WY...Sweetwater.
* IMPACTS: Low Humidities and Strong Gusty Winds could cause
erratic fire behavior.
* WIND: West 20 to 30 mph with gusts up to 40 to 50 mph.
* HUMIDITY: As low as 10 to 15 percent.
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
