WWUS83 KUNR 201709 RFWUNR URGENT - FIRE WEATHER MESSAGE National Weather Service Rapid City SD 1109 AM MDT Fri Mar 20 2026 ...CRITICAL FIRE WEATHER CONDITIONS THROUGH SATURDAY FOR MUCH OF NORTHEASTERN WYOMING AND WESTERN SOUTH DAKOTA... .Well above average temperatures through Saturday with a very dry airmass in place and breezy winds will support critical fire weather conditions. The lowest RH and breeziest winds are expected along and south of I90, especially on the Plains. Poor RH recovery tonight many areas with even warmer conditions Saturday. The red flag warning has been extended through Saturday south of I90, with the addition of south central SD for Saturday. A cold front will move through Saturday evening with breezy northerly winds expected and rising RH. SDZ334-335-210815- /O.NEW.KUNR.FW.W.0009.260321T1700Z-260322T0300Z/ Mellette and Todd Counties-Tripp County- 1209 PM CDT Fri Mar 20 2026 ...RED FLAG WARNING IN EFFECT FROM NOON TO 10 PM CDT SATURDAY FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 334 AND 335... The National Weather Service in Rapid City has issued a Red Flag Warning for gusty winds and low relative humidity, which is in effect from noon to 10 PM CDT Saturday. * AFFECTED AREA...Fire Weather Zones 334 Mellette and Todd Counties and 335 Tripp County. * WINDS...West 10 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 9 percent. * IMPACTS...The combination of gusty winds and low relative humidity will 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. && $$ SDZ319>322-325-326-332-333-WYZ314>318-210815- /O.EXT.KUNR.FW.W.0008.000000T0000Z-260322T0300Z/ Northern Black Hills-Central Black Hills-Southern Black Hills- Fall River County Area-Custer County Plains-Pine Ridge Area- Badlands Area-Bennett County Area-Northern Campbell- Southern Campbell-Crook County Plains-Weston County Plains- Wyoming Black Hills- 1109 AM MDT Fri Mar 20 2026 ...RED FLAG WARNING NOW IN EFFECT UNTIL 9 PM MDT SATURDAY FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 314, 315, 316, 317, 318, 319, 320, 321, 322, 325, 326, 332, AND 333... * AFFECTED AREA...Fire Weather Zones 314 Northern Campbell, 315 Southern Campbell, 316 Crook County Plains, 317 Weston County Plains, 318 Wyoming Black Hills, 319 Northern Black Hills, 320 Central Black Hills, 321 Southern Black Hills, 322 Fall River County Area, 325 Custer County Plains, 326 Pine Ridge Area, 332 Badlands Area and 333 Bennett County Area. * WINDS...West 15 to 25 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 8 percent. * IMPACTS...The combination of gusty winds and low relative humidity will produce critical fire weather conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. && $$ SDZ323-324-327-329-331-210300- /O.CON.KUNR.FW.W.0008.000000T0000Z-260321T0300Z/ Northern Foot Hills-Eastern Foot Hills-Butte County Area- West Central Plains-Haakon County Area- 1109 AM MDT Fri Mar 20 2026 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 323, 324, 327, 329, AND 331... * AFFECTED AREA...Fire Weather Zones 323 Northern Foot Hills, 324 Eastern Foot Hills, 327 Butte County Area, 329 West Central Plains and 331 Haakon County Area. * WINDS...Northwest 10 to 15 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 16 percent. * IMPACTS...The combination of gusty winds and low relative humidity will 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. && $$