* IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and Strong Gusty Winds could cause erratic fire behavior. * AFFECTED AREA: In Southwest WY Fire Zones...277...279. In West Central WY Fire Zone....278. * COUNTIES AFFECTED: In Southwest WY...Sweetwater...Uinta. In West Central WY...Lincoln...Sublette. * WIND: West 15 to 25 mph with gusts up to 35 mph today. West 25 to 35 mph with gusts up to 45 mph Monday. Wind will decrease at night. * HUMIDITY: As low as 11 percent. RH recovery will be fair across zones 277 and 279 tonight. * TEMPERATURES: Highs in the mid 60s to low 70s. Lows in the low 30s to low 40s.