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Wind Advisory issued September 20 at 12:53PM MDT until September 21 at 12:00PM MDT by NWS Rapid City SD* WHAT...Northwest winds 20 to 30 mph with gusts up to 50 mphexpected.* WHERE...Oglala Lakota County, including portions of the Pine RidgeReservation, Rapid City, Custer Co Plains, Pennington Co Plains,Sturgis/Piedmont Foothills, and Southern Meade Co Plains.* WHEN...From midnight tonight to noon MDT Saturday.* IMPACTS...Sudden wind gusts can cause drivers to lose control,especially in lightweight or high profile vehicles. Strong windscan cause blowing dust, reduced visibility, and flying debris.Winds this strong can make driving difficult, especially for highprofile vehicles. Use extra caution.

National Weather Service

Red Flag Warning issued September 20 at 1:22PM MDT until September 20 at 8:00PM MDT by NWS Rapid City SD...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENINGFOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR PORTIONS OFNORTHEAST WYOMING AND FAR SOUTHWEST SOUTH DAKOTA....Breezy westerly winds gusting around 30 mph, combined withrelative humidities falling into the lower teens, will result incritical fire weather conditions this afternoon across portionsof northeast Wyoming and southwest South Dakota.* AFFECTED AREA...Fire Weather Zones 315 Southern Campbell, 317Weston County Plains, 320 Central Black Hills, 321 SouthernBlack Hills, 322 Fall River County Area, 325 Custer CountyPlains and 326 Pine Ridge Area.* WINDS...West 10 to 20 mph with gusts up to 30 mph.* RELATIVE HUMIDITY...As low as 13 percent.* 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