The Pacific Northwest remains soggy as moisture streaming into the region brings steady rain in lower elevations and heavy snow in the northern Cascades and Rockies. Meanwhile, severe thunderstorms threaten the Gulf Coast from Louisiana to Georgia. Looking for warmth? Spring-like temperatures are expanding across the western and central U.S. this week where record-high temperatures will be set in dozens of locations. Looking for snow? Head to Canada, where heavy snow will cover many.
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The weather story this week centers around two major events. In the Pacific Northwest, a powerful atmospheric river is flooding the region with several days of heavy rain, gusty winds, and mountain snow. Meanwhile, a series of clipper systems are spreading snow and biting cold from the Northern Plains into the Great Lakes and Northeast. Arctic air follows behind, dropping temperatures sharply and triggering hazardous flash freeze conditions. In contrast, the Southwest and Deep South stay mild and dry.