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View Diary: Tsunami Warning in Hawaii (61 comments)

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  •  I correct myself - looks like CA, OR is advisory.. (5+ / 0-)
    Recommended by:
    dnta, greengemini, sfbob, joynow, 88kathy

    ...not warning.

    The Hawaii announcement really is a WARNING:

    A TSUNAMI WARNING IS ISSUED FOR THE STATE OF HAWAII EFFECTIVE AT
    0709 PM HST.
     THIS UPGRADE IS DUE TO THE SEA LEVEL READINGS
    RECEIVED AND THE RESULTING CHANGE IN THE HAWAII TSUNAMI
    FORECAST.

    AN EARTHQUAKE HAS OCCURRED WITH THESE PRELIMINARY PARAMETERS

       ORIGIN TIME - 0504 PM HST 27 OCT 2012
       COORDINATES - 52.8 NORTH  131.8 WEST
       LOCATION    - QUEEN CHARLOTTE ISLANDS REGION
       MAGNITUDE   - 7.7  MOMENT

    MEASUREMENTS OR REPORTS OF TSUNAMI WAVE ACTIVITY

     GAUGE LOCATION        LAT   LON    TIME        AMPL         PER
     -------------------  ----- ------  -----  ---------------  -----
     DART 46404           45.9N 128.8W  0417Z   0.05M /  0.2FT  20MIN
     LANGARA POINT BC     54.2N 133.1W  0424Z   0.20M /  0.7FT  26MIN
     DART 46419           48.8N 129.6W  0346Z   0.06M /  0.2FT  12MIN

     LAT  - LATITUDE (N-NORTH, S-SOUTH)
     LON  - LONGITUDE (E-EAST, W-WEST)
     TIME - TIME OF THE MEASUREMENT (Z IS UTC IS GREENWICH TIME)
     AMPL - TSUNAMI AMPLITUDE MEASURED RELATIVE TO NORMAL SEA LEVEL.
            IT IS ...NOT... CREST-TO-TROUGH WAVE HEIGHT.
            VALUES ARE GIVEN IN BOTH METERS(M) AND FEET(FT).
     PER  - PERIOD OF TIME IN MINUTES(MIN) FROM ONE WAVE TO THE NEXT.

     NOTE - DART MEASUREMENTS ARE FROM THE DEEP OCEAN AND THEY
            ARE GENERALLY MUCH SMALLER THAN WOULD BE COASTAL
             MEASUREMENTS AT SIMILAR LOCATIONS.

    EVALUATION

     A TSUNAMI HAS BEEN GENERATED THAT COULD CAUSE DAMAGE ALONG
     COASTLINES OF ALL ISLANDS IN THE STATE OF HAWAII. URGENT ACTION
     SHOULD BE TAKEN TO PROTECT LIVES AND PROPERTY.

     A TSUNAMI IS A SERIES OF LONG OCEAN WAVES. EACH INDIVIDUAL WAVE
     CREST CAN LAST 5 TO 15 MINUTES OR MORE AND EXTENSIVELY FLOOD
     COASTAL AREAS. THE DANGER CAN CONTINUE FOR MANY HOURS AFTER THE
     INITIAL WAVE AS SUBSEQUENT WAVES ARRIVE. TSUNAMI WAVE HEIGHTS
     CANNOT BE PREDICTED AND THE FIRST WAVE MAY NOT BE THE LARGEST.
     TSUNAMI WAVES EFFICIENTLY WRAP AROUND ISLANDS. ALL SHORES ARE AT
     RISK NO MATTER WHICH DIRECTION THEY FACE. THE TROUGH OF A TSUNAMI
     WAVE MAY TEMPORARILY EXPOSE THE SEAFLOOR BUT THE AREA WILL
     QUICKLY FLOOD AGAIN. EXTREMELY STRONG AND UNUSUAL NEARSHORE
     CURRENTS CAN ACCOMPANY A TSUNAMI. DEBRIS PICKED UP AND CARRIED
     BY A TSUNAMI AMPLIFIES ITS DESTRUCTIVE POWER. SIMULTANEOUS HIGH
     TIDES OR HIGH SURF CAN SIGNIFICANTLY INCREASE THE TSUNAMI HAZARD.

     THE ESTIMATED ARRIVAL TIME IN HAWAII OF THE FIRST TSUNAMI WAVE IS

                         1028 PM HST SAT 27 OCT 2012

    MESSAGES WILL BE ISSUED HOURLY OR SOONER AS CONDITIONS WARRANT.

    "My friends, love is better than anger. Hope is better than fear. Optimism is better than despair. So let us be loving, hopeful and optimistic. And we’ll change the world."
    Jack Layton, 1950-2011

    by SSMir on Sat Oct 27, 2012 at 11:06:27 PM PDT

    [ Parent ]

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