NWS Riverton WYFW.W 0031October 22, 2026
Red Flag Warning: Johnson County/Casper BLM, WY
The National Weather Service office in Riverton issued a red flag warning for Johnson County/Casper BLM in Wyoming, in force until 8:00 p.m. local time on October 23. It was the 31st red flag warning the NWS office in Riverton issued in 2026. Wyoming had 7 red flag warnings in October 2026, against 6 in an average October of 2008-2025 (Wyoming's red flag warnings by year).
Warning
In force for 8 hours
The notice
- Issued by
- National Weather Service, Riverton WY
- Area
- Johnson County/Casper BLM
- State
- Wyoming
- Level
- Warning
- Issued
- 11:31 a.m. MDT, October 22, 2026
- In force from
- 12:00 p.m. MDT, October 23, 2026
- Expires
- 8:00 p.m. MDT, October 23, 2026
- CAP severity, certainty, urgency
- Severe, Likely, Expected
- VTEC event
- KRIW FW.W 0031
- Official source
- National Weather Service: the notice at its source
Red Flag Warnings in Wyoming since 2008Every warning type in Wyoming
Source: National Weather Service: the notice at its source. AreaZine rebuilds this page from the agency's record; the agency's page is the one to act on. A U.S. Government work, in the public domain.
The notice as issued
The National Weather Service in Riverton has issued a Red Flag Warning, which is in effect from noon to 8 PM MDT Friday. * IMPACTS: Low Humidities...Strong Gusty Winds...and Wind Shift with a Cold Front could cause erratic fire behavior. * AFFECTED AREA: In North Central WY...Fire Weather Zone 281. * COUNTIES AFFECTED: In North Central WY...Johnson. * COLD FRONT: Moves in after 8 PM MDT Friday, with northerly 20 to 35 mph winds and gusts of 35 to 40 mph. * WIND: Southwest 25 to 35 mph with gusts up to 50 mph. * HUMIDITY: As low as 20 percent.
What the agency told people to do
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.
Source: National Weather Service: the notice at its source. The text is the agency's, unedited. A U.S. Government work, in the public domain.