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‘The Next Wave’

When a powerful earthquake off the North Coast generates a life-threatening tsunami, time will be of the essence for those in its path. In the most serious scenarios, including the “big one,” a magnitude 9.0 megathrust event on the Cascadian Subduction Zone, waves could reach the shore in minutes, before any official alert would even […]

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Tsunami Warning Test on Wednesday

The annual Tsunami Warning Communications Test takes place Wednesday between 11 a.m. and noon, with sirens, a Civil Air Patrol flyover, alerts and notifications via NOAA weather radio as well as local TV and radio. An annual coordinated effort between between the National Weather Service, local tribal governments, Caltrans District 1, the Civil Air Patrol […]

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Tsunami Warning Test Set for Tomorrow

Fifty-four years ago today, at 5:36 p.m., the earth beneath southern Alaska began to shake — and continued to shake for nearly five minutes — with a force that still marks the Good Friday temblor as the largest ever to hit the United States. More than 100 people were killed by the magnitude-9.2 quake and […]

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Siren Song

When an earthquake that struck a string of remote islands off Russia was revised up to a magnitude-7.7 on July 17, the National Tsunami Warning Center issued a tsunami advisory for parts of Alaska. Several updates were sent out over the next hour from the remote monitoring post in Palmer, Alaska, until readings came in […]

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