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Hawaii & Japan Tsunami Advisories

 

**** UPDATE:  USGS lowers Magnitude to 7.6 ****

**** UPDATE: Tsunami Watch For Hawaii Cancelled ****

BULLETIN
TSUNAMI MESSAGE NUMBER   2
NWS PACIFIC TSUNAMI WARNING CENTER EWA BEACH HI
331 AM HST FRI AUG 31 2012

TO - CIVIL DEFENSE IN THE STATE OF HAWAII

SUBJECT - TSUNAMI WATCH CANCELLATION

THE EARTHQUAKE MAGNITUDE IS REDUCED.

THE TSUNAMI WATCH IS CANCELLED FOR THE STATE OF HAWAII EFFECTIVE
AT 0331 AM HST.

image

USGS Shake map

 

# 6528

 

Although it is not yet known whether a tsunami was generated by the 7.9 earthquake that occurred within the last hour east of the Philippines, Japan has issued a tsunami advisory, and Hawaii is under a tsunami watch.

 

This from the Pacific Tsunami Warning Center.

 

TO - CIVIL DEFENSE IN THE STATE OF HAWAII

SUBJECT - TSUNAMI WATCH

A TSUNAMI WATCH IS ISSUED FOR THE STATE OF HAWAII EFFECTIVE AT 0257 AM HST.

AN EARTHQUAKE HAS OCCURRED WITH THESE PRELIMINARY PARAMETERS

   ORIGIN TIME - 0248 AM HST 31 AUG 2012
   COORDINATES - 10.9 NORTH  127.1 EAST
   LOCATION    - PHILIPPINE ISLANDS REGION
   MAGNITUDE   - 7.9  MOMENT

EVALUATION

BASED ON ALL AVAILABLE DATA A TSUNAMI MAY HAVE BEEN GENERATED BY THIS EARTHQUAKE THAT COULD BE DESTRUCTIVE ON COASTAL AREAS EVEN
FAR FROM THE EPICENTER. AN INVESTIGATION IS UNDERWAY TO DETERMINE IF THERE IS A TSUNAMI THREAT TO HAWAII.

IF TSUNAMI WAVES IMPACT HAWAII THE ESTIMATED EARLIEST ARRIVAL OF THE FIRST TSUNAMI WAVE IS

                     1228 PM HST FRI 31 AUG 2012

MESSAGES WILL BE ISSUED HOURLY OR SOONER AS CONDITIONS WARRANT

 

 

Meanwhile, Japan’s Meteorological Agency has issued a Tsunami advisory for what may be a .5 meter tidal wave.

image

**********About Tsunami Forecast************
<Tsunami Advisory>
Tsunami height is expected to be about 0.5 meters. Attention advised.

******* Earthquake Information ********

Occurred at 
21:48 JST 31 Aug 2012

Region name 
PHILIPPINES AND ITS VICINITY

Latitude 10.9N

Longitude 127.1E

Depth Unknown

Magnitude  7.9

 

UPDATE:  No Destructive Tsunami Expected Along West Coast

 

To: U.S. West Coast, Alaska, and British Columbia coastal regions


From: NOAA/NWS/West Coast and Alaska Tsunami Warning Center


Subject: Tsunami Information Statement #2 issued 08/31/2012 at 6:36AM PDT


This message is updated with REVISED MAGNITUDE OF 7.6.


A strong earthquake has occurred, but a tsunami IS NOT expected along the California, Oregon, Washington, British Columbia, or Alaska coast. NO tsunami warning, watch or advisory is in effect for these areas.


A damaging tsunami IS NOT expected along the California, Oregon, Washington, British Columbia, and Alaska coasts although some of these areas may experience non-damaging sea level changes.

At 5:48 AM Pacific Daylight Time on August 31, an earthquake with preliminary magnitude 7.6 occurred in the Philippine Islands region . (Refer to the United States Geological Survey for official earthquake parameters.)


Pacific coastal regions outside California, Oregon, Washington, British Columbia, and Alaska should refer to the Pacific Tsunami Warning Center messages for information on the event.


This will be the final statement issued for this event by the West Coast/Alaska Tsunami Warning Center unless conditions warrant. See the WCATWC web site for basic tsunami information, safety rules, and a tsunami travel time map. (NOTE: Travel time maps indicate forecasted times only, not that a wave was generated.)

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