Weather Alerts For Osage, WY
Fire Weather Warning
-URGENT - FIRE WEATHER MESSAGE National Weather Service Rapid City SD 309 PM MDT Mon Mar 9 2026 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 6 PM MDT THIS EVENING FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 315, 317, AND 322... .Dry air, with relative humidity less than 15 percent, combined with west winds of 25 to 40 mph will continue through late afternoon. These weather elements combined with cured fuels will result in critical fire weather conditions this afternoon. Fall River County Area-Southern Campbell-Weston County Plains- 309 PM MDT Mon Mar 9 2026 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS EVENING FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 315, 317, AND 322... * AFFECTED AREA...Fire Weather Zones 315 Southern Campbell, 317 Weston County Plains and 322 Fall River County Area. * WINDS...West 25 to 40 mph with gusts up to 50 mph. * RELATIVE HUMIDITY...As low as 12 percent. * IMPACTS...The combination of gusty winds and low relative humidity would produce critical fire weather conditions. 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. &&