 The Weather Service in Reno is warning of major heat risk impacts even in the mountains around Lake Tahoe. The excessive heat warning we're under right now remains in effect for southern Nevada until 11 o'clock Friday evening. Amid the record temperatures, there are quite a few fires that have been burning. Several of those may have connections to fireworks shows from last Thursday. Near Parker, Arizona, about 25 miles south of Lake Havasu City, the Blue Water Fire jumped the Colorado into California yesterday.