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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

A squall line developed in a strongly sheared environment in western Kansas Christmas Day. Damaging winds and several weak tornadoes occurred as the squall line moved rapidly eastward. Each tornado moved at least 60 mph and lasted only a few minutes.
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