Waarschuwingen

Red Flag Warning issued September 28 at 1:08PM MDT until September 29 at 9:00PM MDT by NWS Rapid City SD...CRITICAL FIRE WEATHER CONDITIONS EXPECTED SUNDAY AND POSSIBLYMONDAY WITH GUSTY WINDS AND LOW RELATIVE HUMIDITY ACROSS NORTHEASTWYOMING AND WESTERN SOUTH DAKOTA....Gusty south to southwest winds will develop Sunday afternoon,especially over western South Dakota where winds will gust over 40mph. Further west over the Black Hills area and northeast Wyoming,winds will be much lighter, but deeper mixing may allow forfrequent gusts to 25 mph. RH will drop 15 percent or below Sundayafternoon, which will result in critical fire weather conditions.Poor RH recovery is expected Sunday night. A cold front will thencross the region early Monday morning, supporting gusty northwestwinds through the day. Portions of western South Dakota may seegusts of over 50 mph. RH will may fall to below 20 percentMonday, especially over southwest to south central South Dakota,which may again produce critical fire weather conditions.The National Weather Service in Rapid City has issued a Red FlagWarning for gusty winds and low relative humidity, which is ineffect from 10 AM to 9 PM MDT Sunday.* AFFECTED AREA...Fire Weather Zones 314 Northern Campbell, 315Southern Campbell, 316 Crook County Plains, 317 Weston CountyPlains, 320 Central Black Hills, 321 Southern Black Hills and322 Fall River County Area.* WINDS...Southwest 10 to 15 mph with gusts up to 25 mph onSunday. Northwest 15 to 25 with gusts up to 35 mph on Monday.* RELATIVE HUMIDITY...As low as 8 percent on Sunday. As low as 15percent on Monday.* IMPACTS...The combination of gusty winds and low relativehumidity would 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.A Fire Weather Watch means that critical fire weather conditionsare forecast to occur. Listen for later forecasts and possibleRed Flag Warnings.

National Weather Service