By Ralph Ellis and John Branch
(CNN) -- A Texas Panhandle wildfire that has destroyed homes is 35% contained, a fire official said Monday.
About 2,200 acres are threatened, and 2,100 people remain evacuated, said Troy Ducheneaux with the Texas A&M Fire Service.
Crews have not yet made aerial drops, Ducheneaux told CNN Monday morning.
Earlier, Danny Richards, coordinator for the Hutchinson County Emergency Management, said a cold front was raising humidity and helping firefighting efforts.
The wildfire started late Sunday afternoon and was driven by strong, shifting winds. The cause has not been determined.
CNN's Joe Sutton, Ed Payne and Dave Alsup contributed to this report
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