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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 strong Colorado Low storm system moved through from the afternoon of Sunday March 4th through late in the evening on Monday March 5th. Initially, thunderstorms developed, producing cloud to ground lightning, heavy rain, and occasionally pea sized hail. Rain transitioned to sleet and freezing rain, then eventually to snow. Snow continued from late Sunday night through Monday night, producing widely varying amounts across the area from less than an inch to 14 inches.
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