Unseasonably high temperatures are heading toward the region this week. The National Weather Service reports that record-breaking heat is possible by the end of the weekend, with some valley areas in southern Lake and Mendocino counties potentially seeing highs exceed 90 degrees. This late-winter warm spell is causing concern for state water officials, as the California Department of Water Resources says the snowpack is already below average and melting at an accelerated pace. Experts warn that this trend across the West Coast could lead to an increased risk of wildfires later this year.