my direction and sure enough, it's my backconsidered. >> reporter: the dangerous fire conditions have sparked new evacuation 200 miles to the south. it's been raging for six weeks now and is threatening california's historic jbt sequoias. entire towns are being warned-- prepare to leave on a moment's office. fresno fire captain paul garnier. >> with the increase in fire activity and the high heat, these warnings could change and they could change quickly. >> reporter: that's been the fact of life this summer for residents throughout the very dry sierra foothills. the threat has made homeowners realistic. >> if it burns up, it burns up. we've got good insurance so we'll rebuild it, i guess. >> reporter: and his home is still standing. at least a dozen, though, are destroyed in the butte fire, where the concern is constant. >> everything is threatened right now but we're hoping for the best. >> reporter: the high fire danger continues through the weekend but much cooler weather