Red Flag Warning — Northern Cheyenne Indian Reservation/Ashland Ranger District Custer Natl Forest; Sioux Ranger District Custer National Forest; Sheridan County/Casper BLM Severity: Severe. Certainty: Likely. * IMPACTS: Low humidities, unseasonably warm temperatures, strong gusty winds, and wind shift with a cold front will create erratic fire behavior and difficult control of new or existing fires. * AFFECTED AREA: In North Central WY Fire Zone...274. In Southeast MT Fire Zone...131. In Southeast MT and Northwest SD Fire Zone...133. * COUNTIES AFFECTED: In North Central WY...Sheridan. In Northwest SD...Harding. In South Central MT...Big Horn. In Southeast MT...Carter...Fallon...Powder River...Rosebud Treasure. The most dangerous conditions are expected along and southeast of a Baker Montana to Sheridan Wyoming line. * COLD FRONT: Late afternoon into early evening. * WIND: Southwest 20 to 30 mph gusting up to 45 mph. Winds shifting to the northwest behind a late day cold front, with continued gusts to 45 mph through much of tonight. * HUMIDITY: Minimums of 14 to 20 percent. * TEMPERATURES: Highs of 75 to 85 degrees.
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