Avisos

Red Flag Warning issued September 29 at 1:12PM MDT until September 30 at 8:00PM MDT by NWS Rapid City SD...CRITICAL FIRE WEATHER CONDITIONS THIS AFTERNOON THROUGH MONDAYWITH GUSTY WINDS AND LOW RELATIVE HUMIDITY ACROSS NORTHEASTWYOMING AND WESTERN SOUTH DAKOTA....Gusty south to southwest winds will continue this afternoon,along with relative humidities of 8 to 15 percent, resulting incritical fire weather conditions. Poor RH recovery is expectedtonight. Winds across western to central South Dakota willincrease this evening, with gusts up to 55 mph. A cold front willthen cross the region later tonight. Winds will shift to thenorthwest behind the front and gust up to 50 mph. Relativehumidity will fall to below 20 percent Monday, especially oversouthwest to south central South Dakota, supporting continuedcritical fire weather conditions.* 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 and 322 FallRiver County Area.* WINDS...West 10 to 20 mph with gusts up to 30 mph thisafternoon, shifting northwest and increasing to 20 to 30 mphwith gusts to 40 mph late tonight into Monday.* RELATIVE HUMIDITY...As low as 10 percent this afternoon. As lowas 14 percent 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.

National Weather Service