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Understanding how a tornado hit Scotts Valley
A tornado touched down in Scotts Valley in Santa Cruz County. Cinthia Pimentel explains how the phenomenon happened.
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Storm generates rare tornado warning in San Francisco, part of San Mateo County
A storm and wind gusts of up to 60 mph (96 kph) prompted the first tornado warning in San Francisco and caused some damage in the Bay Area on Saturday. Parts of neighboring San Mateo County were also included in the warning to about 1 million people in the area. Christie Smith reports.
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Strong solar storm hits Earth, could disrupt communications and produce northern lights in US
An unusually strong solar storm hitting Earth could produce northern lights in the U.S. this weekend and potentially disrupt power and communications. Jocelyn Moran reports.
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Strong solar storm hits Earth, could disrupt communications and produce northern lights in US
An unusually strong solar storm hitting Earth could produce northern lights in the U.S. this weekend and potentially disrupt power and communications.
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Northern lights put on a show during geomagnetic storm
A severe solar storm led to beautiful views of the northern lights Friday.
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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.