Strong northwest winds of 15-35 mph with gusts 35-55 mph amid relative humidity of 15-25% will develop behind a cold front across the northern and central Plains into the Upper Midwest. Elevated to locally critical conditions are most likely across eastern Montana through the Dakotas into the central Plains and Front Range where fuels are driest. Scattered to numerous showers and thunderstorms, with a few thunderstorms likely to be severe, will develop ahead of a cold front from northeast Texas through the Mid-Mississippi and Ohio Valleys into the eastern Great Lakes, Appalachians, and Southeast. Scattered showers and isolated thunderstorms are likely to develop across Minnesota and the western Great Lakes as well. Another upper low will develop near or off the southern California coast, with isolated showers and thunderstorms for the Transverse and Peninsular Ranges of southern California. Above normal temperatures and afternoon relative humidity below 25% will return to much of northern California, the Northwest, the northern and western Great Basin, and the northern Rockies as high pressure aloft rebuilds. Weak offshore east winds are likely to develop overnight on the west slopes of the Cascades and northern Sierra as well.