Monday, June 23, 2014

[Geology2] Fwd: [Tsunami Message - IOC] NWS-NTWC Tsunami Advisory [1 Attachment]

[Attachment(s) from Lin Kerns included below]



BULLETIN
PUBLIC TSUNAMI MESSAGE NUMBER 5
NWS NATIONAL TSUNAMI WARNING CENTER PALMER AK
345 PM AKDT MON JUN 23 2014

UPDATES IN THIS MESSAGE INCLUDE MODIFIED ALERT AREAS.
UPDATES IN THIS MESSAGE INCLUDE NEW OBSERVATIONS.

...THE TSUNAMI ADVISORY REMAINS IN EFFECT...


WARNINGS/ADVISORIES/WATCHES - UPDATED
-------------------------------------

TSUNAMI ADVISORY IN EFFECT FOR...

 * THE COASTAL AREAS OF ALASKA FROM NIKOLSKI ALASKA TO ATTU
   ALASKA


CANCELLATIONS
-------------
 * THE TSUNAMI ADVISORY IS CANCELED FOR THE COASTAL AREAS OF
   ALASKA FROM UNIMAK PASS ALASKA /WHICH IS LOCATED 80 MILES
   NE OF UNALASKA/ TO NIKOLSKI ALASKA

 * FOR OTHER US AND CANADIAN PACIFIC COASTS IN NORTH AMERICA -
   THIS IS FOR INFORMATION ONLY.


IMPACTS FOR TSUNAMI ADVISORY AREAS
----------------------------------
 * A TSUNAMI CAPABLE OF PRODUCING STRONG CURRENTS OR WAVES DANGEROUS
   TO PERSONS IN OR VERY NEAR THE WATER IS EXPECTED.

 * CURRENTS MAY BE HAZARDOUS TO SWIMMERS... BOATS... AND COASTAL
   STRUCTURES AND MAY CONTINUE FOR MANY HOURS AFTER THE TSUNAMI
   ARRIVAL.

 * THE FIRST WAVE MAY NOT BE THE LARGEST.


RECOMMENDED ACTIONS
-------------------
 * IF YOU ARE IN AN ADVISORY AREA - MOVE OFF THE BEACH AND OUT OF
   HARBORS AND MARINAS.  WIDESPREAD INUNDATION OF LAND IS NOT
   EXPECTED FOR ADVISORY AREAS.

 * BE ALERT TO INSTRUCTIONS FROM YOUR LOCAL EMERGENCY OFFICIALS.

 * DO NOT GO TO THE COAST TO OBSERVE THE TSUNAMI.

 * DO NOT RETURN TO THE COAST UNTIL LOCAL EMERGENCY OFFICIALS
   INDICATE IT IS SAFE TO DO SO.


FORECASTS AND/OR OBSERVATIONS OF TSUNAMI ACTIVITY
-------------------------------------------------
                 FORECAST         FORECAST  FORECAST      OBSERVED
                 START OF         TSUNAMI   MAX TSUNAMI   MAX TSUNAMI
SITE             OF TSUNAMI       DURATION  HEIGHT        HEIGHT
----             ----------       --------  ------------- -------

 * ALASKA
SAINT PAUL       1504 AKDT JUN 23           Less than 1FT

FORECAST MAX TSUNAMI HEIGHT IS THE HIGHEST EXPECTED WATER LEVEL
ABOVE THE TIDE.

FORECAST TSUNAMI DURATION IS THE APPROXIMATE LENGTH OF TIME WHICH
THE TSUNAMI MAY PRODUCE DANGEROUS CURRENTS AND WAVE ACTIVITY.

OBSERVED MAX TSUNAMI HEIGHT IS THE HIGHEST RECORDED WATER LEVEL
ABOVE THE TIDE LEVEL UP TO THIS POINT.


ADDITIONAL OBSERVATIONS OF TSUNAMI ACTIVITY - UPDATED
-----------------------------------------------------
                                  TIME             OBSERVED MAX
 SITE                         OF MEASUREMENT       TSUNAMI HEIGHT
 ---------------------------- ---------------      --------------
 AMCHITKA  AK                 2322 UTC  06-23        00.7FT
 SHEMYA  AK                   2305 UTC  06-23        00.2FT
 ADAK  AK                     2302 UTC  06-23        00.2FT
 NIKOLSKI  AK                 2323 UTC  06-23        00.2FT
 ST PAUL IS.  AK              2329 UTC  06-23        00.4FT

 HEIGHT - OBSERVED MAX TSUNAMI HEIGHT IS THE WATER LEVEL ABOVE THE
          TIDE LEVEL AT THE TIME OF MEASUREMENT.


PRELIMINARY EARTHQUAKE PARAMETERS
---------------------------------
 * MAGNITUDE      8.0
 * ORIGIN TIME    1253 AKDT JUN 23 2014
                  1353  PDT JUN 23 2014
                  2053  UTC JUN 23 2014
 * COORDINATES    51.8 NORTH 178.7 EAST
 * DEPTH          68 MILES
 * LOCATION       25 MILES NW OF AMCHITKA ALASKA
                  195 MILES W OF ADAK ALASKA


NEXT UPDATE AND ADDITIONAL INFORMATION
--------------------------------------
 * THIS MESSAGE WILL BE UPDATED WITHIN 60 MINUTES.

 * REFER TO THE INTERNET SITE NTWC.ARH.NOAA.GOV FOR MORE
   INFORMATION.

 * PACIFIC COASTAL RESIDENTS OUTSIDE CALIFORNIA... OREGON...
   WASHINGTON... BRITISH COLUMBIA AND ALASKA SHOULD REFER TO THE
   PACIFIC TSUNAMI WARNING CENTER MESSAGES AT PTWC.WEATHER.GOV.



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Attachment(s) from Lin Kerns | View attachments on the web

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Posted by: Lin Kerns <linkerns@gmail.com>



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