High report on the island of Maui, at least 5 foot rise in Kahului
Posted by Chris in Tampa on 3/11/2011, 9:36 am
BULLETIN
TSUNAMI MESSAGE NUMBER  10
NWS PACIFIC TSUNAMI WARNING CENTER EWA BEACH HI
420 AM HST FRI MAR 11 2011

TO - CIVIL DEFENSE IN THE STATE OF HAWAII

SUBJECT - TSUNAMI WARNING SUPPLEMENT

A TSUNAMI WARNING CONTINUES IN EFFECT FOR THE STATE OF HAWAII.

AN EARTHQUAKE HAS OCCURRED WITH THESE PRELIMINARY PARAMETERS

  ORIGIN TIME - 0746 PM HST 10 MAR 2011
  COORDINATES - 38.3 NORTH  142.4 EAST
  LOCATION    - NEAR EAST COAST OF HONSHU  JAPAN
  MAGNITUDE   - 8.9  MOMENT

MEASUREMENTS OR REPORTS OF TSUNAMI WAVE ACTIVITY

GAUGE LOCATION        LAT   LON    TIME        AMPL         PER
-------------------  ----- ------  -----  ---------------  -----
KAHULUI MAUI         20.9N 156.5W  1340Z   1.82M /  6.0FT  28MIN
LAHAINA HI           20.9N 156.7W  1335Z   0.50M /  1.6FT  64MIN
MILOLII HI           19.2N 155.9W  1350Z   0.67M /  2.2FT  12MIN
KAPOHO HI            19.5N 154.8W  1340Z   0.04M /  0.1FT  52MIN
BARBERS PT HI        21.3N 158.1W  1323Z   0.65M /  2.1FT  06MIN
HONUAPO HI           19.1N 155.6W  1340Z   0.04M /  0.1FT  32MIN
HALEIWA HI           21.6N 158.1W  1329Z   1.09M /  3.6FT  38MIN
MAKAPU`U HI          21.3N 157.7W  1312Z   0.49M /  1.6FT  52MIN
KAWAIHAE HAWAII      20.0N 155.8W  1330Z   0.85M /  2.8FT  56MIN
HONOKOHAU HI         19.7N 156.0W  1345Z   0.44M /  1.4FT  10MIN
NAWILIWILI KAUAI     22.0N 159.4W  1311Z   0.64M /  2.1FT  26MIN
HANALEI HI           22.2N 159.5W  1306Z   0.85M /  2.8FT  28MIN
TERN FR. FRIGATE US  23.9N 166.3W  1224Z   0.37M /  1.2FT  16MIN

 NOTE - THE KAHULUI MEASUREMENT IS CLIPPED.  ACTUAL IS LARGER.

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 COASTAL MEASUREMENTS.

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.

MESSAGES WILL BE ISSUED HOURLY OR SOONER AS CONDITIONS WARRANT.
...SP...
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In this thread:
Catastrophic 8.9 earthquake and tsunami in Japan; TSUNAMI WARNING ISSUED FOR HAWAII - Chris in Tampa, 3/11/2011, 2:40 am
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