Fire Weather Watch — Gallatin National Forest; Wheatland County/Sweet Grass County; Stillwater County; Beartooth Ranger District Custer National Forest; Golden Valley County/Musselshell County; Yellowstone County; Crow Indian Reservation/Big Horn Canyon Rec Area; Northern Rosebud/Northern Treasure Counties; Northern Cheyenne Indian Reservation/Ashland Ranger District Custer Natl Forest; Custer County; Sioux Ranger District Custer National Forest; Sheridan County/Casper BLM; Bighorn National Forest Severity: Severe. Certainty: Possible. * IMPACTS: Low humidities, hot temperatures, and high-based thunderstorms with gusty and erratic winds may create erratic fire behavior and new fire starts. * AFFECTED AREA: In North Central WY Fire Zones...274...284. In South Central MT Fire Zones...123...124...125...126...127 128...129. In Southeast MT Fire Zones...130...131...132. In Southeast MT and Northwest SD Fire Zone...133. * COUNTIES AFFECTED: In Central MT...Golden Valley...Musselshell...Wheatland. In North Central WY...Big Horn...Johnson...Sheridan...Washakie. In Northwest SD...Harding. In South Central MT...Big Horn...Carbon...Park...Stillwater Sweet Grass...Yellowstone. In Southeast MT...Carter...Custer...Fallon...Powder River Rosebud...Treasure. In Southwest MT...Gallatin. * WIND: Southwest 10 to 20 mph with gusts to 25 mph. * THUNDERSTORMS: Scattered afternoon and evening thunderstorms will produce gusty and erratic winds, and spotty rainfall. * HUMIDITY: Minimums of 11 to 19 percent. * TEMPERATURES: Highs of 99 to 107 below 5000 feet, hottest in the east.
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