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BASED ON THE EARTHQUAKE MAGNITUDE… LOCATION AND HISTORIC TSUNAMI RECORDS A DAMAGING TSUNAMI IS NOT EXPECTED ALONG THE CALIFORNIA/ OREGON/ WASHINGTON/ BRITISH COLUMBIA AND ALASKA COASTS. SOME OF THESE AREAS MAY EXPERIENCE NON-DAMAGING SEA LEVEL CHANGES.

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An earthquake has occurred with a magnitude such that a tsunami is not expected. Earthquakes of this magnitude are very unlikely to trigger a tsunami.

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At 11:16 PM Alaskan Daylight Time on October 30, an earthquake with preliminary magnitude 6.0 occurred 90 miles/145 Km southwest of Amchitka, Alaska . The magnitude is such that a tsunami IS NOT EXPECTED. This will be the only WCATWC message issued for this event.

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A widespread Pacific wide destructive tsunami threat does not exist based on historical earthquake and tsunami data. The Tsunami Warning is canceled for the coastal areas from Unimak Pass, Alaska (80 miles NE of Dutch Harbor) to Amchitka Pass, Alaska (125 miles W of Adak).

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No destructive widespread tsunami threat exists based on historical earthquake and tsunami data. However – earthquakes of this size sometimes generate local tsunamis that can be destructive along coasts located within a hundred kilometers of the earthquake epicenter. Authorities in the region of the epicenter should be aware of this possibility and take appropriate action.

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