Chicago Weather May 9, 2024 10:20 pm

First ‘severe geomagnetic storm watch' issued in nearly 20 years. Here's what it could mean

The National Weather Service’s Space Weather Prediction Center (SWPC) has issued a “severe geomagnetic storm watch,” the first such watch issued in nearly 20 years. NBC 5 Storm Team Chief Meteorologist Brant Miller explains what it means.

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