A tsunami warning was issued — and then cancelled about an hour later — for 400 miles of California coastline after a 7.0-magnitude earthquake struck off the coast near California's northern border with Oregon. "About 5 million people were under the warning while it was in effect," reports a San Francisco news site.

Phones had sounded with an emergency tone in affected areas, with a warning that "You are in danger. Get away from coastal waters. Move to high ground or inland now." Warning sirens sounded in some areas, and as a precaution San Francisco paused service for its BART trains travelling under the San Francisco Bay. But while tsunami waves were originally predicted to hit San Francisco at 12:10 p.m. — they didn't. New information prompted the cancellation of the tsunami warning.
Thanks to long-time Slashdot reader sinij for sharing the news.

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