A powerful Pacific jet stream is bringing two dangerous storms fueled by an atmospheric river to the West Coast, the first of which arrives on Wednesday.
Seven western states from Washington to New Mexico are on alert for flooding, strong winds and heavy snow, with California bracing for a major impact.
The rain will reach the San Francisco Bay area around noon Wednesday.
The rainfall will grow heavier throughout the afternoon and will likely be at its heaviest around 7 p.m. Flash flooding, mudslides and strong winds are possible.
The rain starts in Los Angeles Wednesday night into Thursday morning, with the heaviest rain falling on Thursday morning. Flash flooding, mudslides and rock slides are possible.
The heavy rain and potential flash flooding will reach San Diego later on Thursday morning.
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