PACIFIC TSUNAMI WARNING CENTER EWA BEACH HI844 PM HST THU MAR 10 2011TO – CIVIL DEFENSE IN THE STATE OF HAWAIISUBJECT – TSUNAMI WATCH SUPPLEMENTA TSUNAMI WATCH 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 – 38.2 NORTH 142.5 EAST LOCATION – NEAR EAST COAST OF HONSHU JAPAN MAGNITUDE – 8.8 MOMENTMEASUREMENTS OR REPORTS OF TSUNAMI WAVE ACTIVITY GAUGE LOCATION LAT LON TIME AMPL PER DART 21418 38.7N 148.7E 0619Z 1.08M / 3.5FT 06MIN 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 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 0259 AM HST FRI 11 MAR
Tsunami Watch State of Hawaii
on March 10, 2011
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