Los Angeles could receive an entire month's worth of rain over a span of three days as a "significant" atmospheric river f loods Southern California later this week.

The National Weather Service (NWS) warned that flash flooding could occur with the storm, and NWS Weather Prediction Center lead forecaster Bob Oravec told Newsweek the greatest impacts of flash flooding will occur if heavy rain falls over recent burn scars in the area.

Why It Matters

The storm is caused by an atmospheric river, which is a “long, narrow region in the atmosphere—like rivers in the sky—that transport most of the water vapor outside of the tropics,” according to the National Oceanic and Atmospheric Administration (NOAA).

The storms brought by atmospheric rivers are known for their heavy snow, heavy rain

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