![]() Think of an atmospheric river as a fire hose that funnels moisture from the tropical Pacific towards California.Ītmospheric rivers come in many different shapes and sizes. Courtesy of the Weather Channel What is an atmospheric river?Īll of this precipitation is caused by an atmospheric river (AR), a narrow band of moisture that can transport huge amounts of water vapor towards the West Coast. Using data from the National Oceanic and Atmospheric Administration’s (NOAA) website on atmospheric rivers in California, here are four other winter storms that caused serious destruction.Īn atmospheric river is expected to bring heavy rain and mountain snow to California. The warmer series of storms that will pummel California on Saturday, Sunday, Tuesday, and Wednesday is forecasted to deliver enough precipitation to flood rivers and seriously disrupt travel. ![]() Much of the San Francisco area is already in a flash flood watch and Northern California is expected to receive upwards of 12 inches of rain and between 10-20 feet of snow (head over here for more on the forecast). There’s no guarantee that the upcoming series of storms will result in similar destruction, but the forecast doesn’t look good. Slated to hit California on Saturday with inches of rain and feet of snow, previous atmospheric river events have caused hundreds of millions of dollars in damage. ![]() A storm one meteorologist is calling “a once-in-10-year-event” is headed to California as we speak, all thanks to a phenomenon called an atmospheric river. ![]()
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