This Week's Drought Summary (11/30)

November 30, 2017

This U.S. Drought Monitor week saw a series of storms impact the Pacific Northwest, northern California, and northern Rockies. The heaviest precipitation was observed across the Olympic Mountains and North Cascades of western Washington where precipitation accumulations (liquid) ranged from 4-to-12 inches. In the Puget Lowlands of western Washington, runoff from the storm event led to severe flooding on the Skagit River that peaked at 5 feet above flood stage on Friday. Elsewhere in the West, unseasonably warm temperatures were observed across parts of the region including record-breaking high temperatures reported across southern California, the Desert Southwest, western Great Basin, and along the Front Range of Colorado. In the Southwest, the warm and dry pattern of the past several months led to expansion of areas of moderate drought in Arizona, New Mexico, and Utah while drought-related conditions improved in western Montana. In the High Plains, conditions were very dry this week, and temperatures were well above normal across the entire region. In the South and Southern Plains, the overall dry pattern during the past 30-to-60 days led to expan