Tsunami Advisory: 8.8 Chile Earthquake May Send High Waves at North Coast

803 AM PST SAT FEB 27 2010

…A TSUNAMI ADVISORY IS IN EFFECT WHICH INCLUDES THE
COASTAL AREAS OF CALIFORNIA – OREGON – WASHINGTON – BRITISH
COLUMBIA AND ALASKA FROM THE CALIFORNIA-MEXICO BORDER TO
ATTU ALASKA…

RECOMMENDED ACTIONS
A TSUNAMI HAS BEEN GENERATED WHICH COULD IMPACT THE REGIONS LISTED IN THE HEADLINE. PERSONS IN LOW-LYING COASTAL AREAS SHOULD BE ALERT TO INSTRUCTIONS FROM THEIR LOCAL EMERGENCY OFFICIALS. EVACUATIONS ARE ONLY ORDERED BY EMERGENCY RESPONSE AGENCIES.
– PERSONS IN TSUNAMI ADVISORY AREAS SHOULD MOVE OUT OF THE WATER… OFF THE BEACH AND OUT OF HARBORS AND MARINAS.
According to CBS News:

The Ewa Beach, Hawaii-based center called for “urgent action to protect lives and property” in Hawaii, which is among 53 nations and territories subject to tsunami warnings.

“The main thing is we want everyone to take this event seriously,” said Charles McCreery, director of the center.

McCreery said he didn’t know how big the waves will be, but he expected them to be the largest to hit Hawaii since 1964.

The state planned to sound warning sirens statewide at 6 a.m. to alert residents and tourists of the incoming tsunami, said Shelly Ichishita, spokeswoman for state civil defense….

A lower-grade tsunami advisory was in effect for the coast of California and an Alaskan coastal area from Kodiak to Attu islands.

Estimated Arrival Times on the North Coast are:

Fort Bragg, California                          1307  PST FEB 27    2107 UTC FEB 27
Cape Mendocino, California                      1322  PST FEB 27    2122 UTC FEB 27
San Francisco, California                       1326  PST FEB 27    2126 UTC FEB 27
DART 46407                                      1332  PST FEB 27    2132 UTC FEB 27
Humboldt Bay, California                        1333  PST FEB 27    2133 UTC FEB 27
Crescent City, California                       1346  PST FEB 27    2146 UTC FEB 27

Hat tip to Highboldtage and the LA Times

Update:  Heraldo has a lively conversation going already.

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6 comments

  • The Sheriff’s dept has issued this statement:
    The first waves are expected to arrive in Humboldt Bay at approximately 1:30 p.m. Although no significant coastal flooding is expected to be produced by these waves, some areas could experience dangerous currents and surges (particularly in bays and harbors) due to this tsunami. Citizens are advised to remember the following:

    o Stay off the beaches and out of the harbors and marinas from 1:00 p.m. until tomorrow.
    o Significant, widespread coastal flooding is not expected to occur. The impact of this tsunami will be stronger than normal currents and possible higher than normal surges along the beaches.
    o There will be a strong outgoing tidal current at the same time the tsunami arrives. The combined affect could produce very strong currents in harbors and bays.
    o A Tsunami event is a series of waves that can last for several hours. The first wave is usually not the strongest.
    o Remember: the Pacific Tsunami Warning Center has only issued a Tsunami Advisory for the North Coast – not a Tsunami Warning.

  • The Sheriff’s dept has issued this statement:
    The first waves are expected to arrive in Humboldt Bay at approximately 1:30 p.m. Although no significant coastal flooding is expected to be produced by these waves, some areas could experience dangerous currents and surges (particularly in bays and harbors) due to this tsunami. Citizens are advised to remember the following:

    o Stay off the beaches and out of the harbors and marinas from 1:00 p.m. until tomorrow.
    o Significant, widespread coastal flooding is not expected to occur. The impact of this tsunami will be stronger than normal currents and possible higher than normal surges along the beaches.
    o There will be a strong outgoing tidal current at the same time the tsunami arrives. The combined affect could produce very strong currents in harbors and bays.
    o A Tsunami event is a series of waves that can last for several hours. The first wave is usually not the strongest.
    o Remember: the Pacific Tsunami Warning Center has only issued a Tsunami Advisory for the North Coast – not a Tsunami Warning.

  • The sheriff dept. just issued another statement:
    The Pacific Basin, including Humboldt County, experienced a tsunami this afternoon. There have been no reports of damage or injuries in the county. The first wave action in Humboldt Bay was observed at the North Spit tidal gauge (inside the bay) just after 1:30 p.m. Some witnesses described the event as a quick change of tides. Many witnesses said they did not notice anything unusual.

    It is important to note that the wave action generated by a tsunami can last for hours. Dangerous currents may still exist and citizens are encouraged to use caution near beaches, harbors and bays.

  • The sheriff dept. just issued another statement:
    The Pacific Basin, including Humboldt County, experienced a tsunami this afternoon. There have been no reports of damage or injuries in the county. The first wave action in Humboldt Bay was observed at the North Spit tidal gauge (inside the bay) just after 1:30 p.m. Some witnesses described the event as a quick change of tides. Many witnesses said they did not notice anything unusual.

    It is important to note that the wave action generated by a tsunami can last for hours. Dangerous currents may still exist and citizens are encouraged to use caution near beaches, harbors and bays.

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