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Significant and Catastrophic Flooding in the Pacific Northwest; Very Cold Temperatures in the Northern Plains

The atmospheric river over the Pacific Northwest will begin to subside today, but lingering rainfall will exacerbate ongoing catastrophic major river flooding, and landslides will continue across portions of western Washington and northwest Oregon for several days. Arctic air will plummet southward into the Northern Plains today, bringing cold air in the single digits to the region by Friday. Read More >

Overview

A cold front moved through southeast Kansas and the Missouri Ozarks on Thursday bringing a shallow cold air mass to the area. The freezing line made it to the Missouri/Arkansas border. Freezing rain moved into the area late Thursday night from the south. Minor icing occurred along the Arkansas border due to warm temperatures hovering around 32 degrees. Heavier icing occurred north of a line from near Joplin to just north of Springfield, to near Salem, where ¼ to ½ inch of ice accretion was common on elevated objects, with some local ¾ inch amounts. This was in area where temperatures remained in the upper 20s. Several other waves of rain/freezing rain brought more icing to the region Saturday and again early Sunday morning.

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Ice Accumulation Amounts
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