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Red Flag Warning issued October 1 at 1:36PM MDT until October 2 at 6:00PM MDT by NWS Rapid City SD...CRITICAL FIRE WEATHER CONDITIONS NOW EXPECTED THROUGH WEDNESDAYAFTERNOON......RED FLAG WARNING NOW IN EFFECT UNTIL 6 PM MDT /7 PM CDT/WEDNESDAY FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FIREWEATHER ZONES 314, 315, 316, 317, 318, 319, 320, 321, 322, 323,324, 325, 326, 327, 328, 329, 330, 331, 332, 333, 334, AND 335....Gusty south to southwest winds will continue through thisevening, slowly becoming northwest as a dry cold front movesthrough late tonight and early Wednesday. Wind gusts around 30 mphare expected through this evening, then 30 to 40 mph on thewestern South Dakota plains Wednesday. Minimum relative humiditieswill be 8-15 percent through this evening, poorly recover to20-30 percent tonight over northeastern Wyoming and western SouthDakota and 30-40 percent over south-central South Dakota, thendropping to 10-20 percent Wednesday afternoon.The combination of gusty winds, low minimum relative humiditiesthrough this evening and again Wednesday, poor overnight relativehumidity recovery, and a dry cold front passage will producecritical fire weather conditions through Wednesday afternoon.* AFFECTED AREA...Fire Weather Zones 314 Northern Campbell, 315Southern Campbell, 316 Crook County Plains, 317 Weston CountyPlains, 318 Wyoming Black Hills, 319 Northern Black Hills, 320Central Black Hills, 321 Southern Black Hills, 322 Fall RiverCounty Area, 323 Northern Foot Hills, 324 Eastern Foot Hills,325 Custer County Plains, 326 Pine Ridge Area, 327 ButteCounty Area, 328 Perkins County, 329 West Central Plains, 330Ziebach County, 331 Haakon County Area, 332 Badlands Area, 333Bennett County Area, 334 Mellette and Todd Counties and 335Tripp County.* WINDS...Southwest 10 to 20 mph with gusts up to 30 mph throughthis evening becoming northwest 10 to 25 mph with gusts up to 40mph on the western South Dakota plains Wednesday.* RELATIVE HUMIDITY...8 to 15 percent through this evening. Poorrecovery tonight only rising to the 20s over northeasternWyoming and far western South Dakota. 10 to 20 percent minimumrelative humidity for Wednesday afternoon.* IMPACTS...The combination of gusty winds and low relativehumidity will produce critical fire weather conditions.A Red Flag Warning means that critical fire weather conditionsare either occurring now, or will shortly. A combination ofstrong winds, low relative humidity, and warm temperatures cancontribute to extreme fire behavior.

National Weather Service