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Atmospheric River Bringing Heavy Rain to Southern California and Heavy Snow to the Sierra Nevadas

A strong atmospheric river will continue heavy rain over southern California through Friday. The heaviest rainfall is ongoing today in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall has begun over the Sierra Nevada Mountains and will continue through Friday. Travel will become increasingly difficult over the passes due to snow and strong winds. Read More >

Overview

Heavy snow developed across South Dakota and northwest Iowa and advanced northeastward during the day February 24, 2018.  Snowfall rates of 1 to 2 inches per hour were common.  The snow tapered off from southwest to northeast during the evening, and ended in Wisconsin in the early morning hours of February 25th.

Snow accumulations of 5 to 9 inches were reported across central Minnesota.  Lesser amounts in the 3 to 6 inch range were measured across southern Minnesota and western Wisconsin where snow mixed with freezing rain and sleet at times.  The map below is smoothed and therefore does not show the several localized 8 or 9 inch totals reported.
 

 

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