Red Flag Warning

Locations Affected

Cheyenne, WY ∙ Bordeaux, WY ∙ South Torrington, WY ∙ North Platte National Wildlife Refuge, NE ∙ Ranchettes, WY ∙ Lyman, NE ∙ Whitney, NE ∙ Farthing, WY ∙ Fort Laramie, WY ∙ Wildcat Mountain, NE

Headline

...RED FLAG WARNING FROM 11AM TUESDAY THROUGH 8PM WEDNESDAY...

Full Alert Message

URGENT - FIRE WEATHER MESSAGE National Weather Service Cheyenne WY 746 PM MDT Mon Apr 20 2026 ...RED FLAG WARNING FROM 11AM TUESDAY THROUGH 8PM WEDNESDAY... ...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING... ...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM TUESDAY TO 8 PM MDT WEDNESDAY FOR LOW RH AND GUSTY WINDS FOR FIRE WEATHER ZONES 417, 418, 430, 431, 432, 433, 434, 435, 436, AND 437...... Red Flag Warning will be allowed to expire this evening as winds have diminished below critical fire weather criteria. However, Red Flag Warning for Tuesday afternoon remains in effect. * AFFECTED AREA...For Tuesday and Wednesday, Fire weather zones 417, 418, and 430 through 437. * WIND... Southerly winds 10 to 15 mph on Tuesday with gusty erratic showers in the afternoon. Southwest winds with gusts between 30 and 45 mph on Wednesday. * HUMIDITY...5 to 12 percent. * 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.

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