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A magnitude-7.9 earthquake struck off the Gulf of Alaska on Tuesday, spreading statewide panic about possible tsunamis impacting the mainland.

A 7.9 magnitude earthquake struck off the Gulf of Alaska soon after midnight on Tuesday, spreading statewide panic about possible tsunamis impacting the mainland.

According to CBS News, the National Weather Service sent out an emergency text to Alaska residents that said: "Emergency Alert. Tsunami danger on the coast. Go to high ground or move inland."

Those living in low-level homes in Kodiak, Alaska, were asked to evacuate.

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Warning sirens went off in Kodiak and Seward. Alaska residents shared videos of their emergency warning sirens, sounding off in the quiet Alaskan night.

Officials canceled the warnings early Tuesday morning "because additional information and analysis have better defined the threat,” the National Tsunami Warning Center in Palmer, Alaska, told CNN.

The center said it received reports of 1-foot-high waves.

Officials in San Francisco encouraged people to stay away from the coast for at least the next 12 hours.