Catastrophic 8.9 earthquake and tsunami in Japan; TSUNAMI WARNING ISSUED FOR HAWAII
Posted by
Chris in Tampa on 3/11/2011, 2:40 am
Messages issued hourly for the tsunami warnings: http://www.weather.gov/ptwc/
---------------------------------
The initial warning for Hawaii:
TSUNAMI MESSAGE NUMBER 3 NWS PACIFIC TSUNAMI WARNING CENTER EWA BEACH HI 931 PM HST THU MAR 10 2011 TO - CIVIL DEFENSE IN THE STATE OF HAWAII SUBJECT - TSUNAMI WARNING A TSUNAMI WARNING IS ISSUED FOR THE STATE OF HAWAII EFFECTIVE AT 0931 PM HST. 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 MOMENT MEASUREMENTS OR REPORTS OF TSUNAMI WAVE ACTIVITY GAUGE LOCATION LAT LON TIME AMPL PER DART 21413 30.5N 152.1E 0659Z 0.76M / 2.5FT 32MIN HANASAKI HOKKAIDO J 43.3N 145.6E 0657Z 2.79M / 9.2FT 76MIN DART 21401 42.6N 152.6E 0643Z 0.67M / 2.2FT 40MIN 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 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 0259 AM HST FRI 11 MAR 2011 MESSAGES WILL BE ISSUED HOURLY OR SOONER AS CONDITIONS WARRANT. |
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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- West Coast DARTS 46404 & 46407 are detecting it - JAC, 3/11/2011, 10:00 am
- Re: Catastrophic 8.9 earthquake and tsunami in Japan; TSUNAMI WARNING ISSUED FOR HAWAII - Conclue, 3/11/2011, 9:00 am
- It's hitting Hawaii now - Chris in Tampa, 3/11/2011, 8:29 am
- Just passed the Honolulu DART - JAC, 3/11/2011, 8:15 am
- Midway Island data - Chris in Tampa, 3/11/2011, 7:57 am
- About 15 minutes until the tsunami is estimated to begin to impact Hawaii - Chris in Tampa, 3/11/2011, 7:51 am
- Unconfirmed: Bullet Train Missing ... and other thoughts. - Anung Mwka, 3/11/2011, 7:41 am
- DART showing Tsunami hitting Alaska - JAC, 3/11/2011, 7:24 am
- Fire / State of Emergency for a Nuclear Plant near Sendai - Anung Mwka, 3/11/2011, 7:14 am
- Re: Catastrophic 8.9 earthquake and tsunami in Japan; TSUNAMI WARNING ISSUED FOR HAWAII - Jackstraw, 3/11/2011, 5:27 am
- TSUNAMI WARNING ISSUED FOR PARTS OF CALIFORNIA, OREGON, AND ALASKA - Chris in Tampa, 3/11/2011, 4:31 am
- Estimate for wave to reach Hawaii: 3:07 AM HST / 8:07 AM EST (from 1030 PM HST warning) - n/t - Chris in Tampa, 3/11/2011, 3:54 am
- Tsunami watch issued for Alaska, Canada, and US West Coast. Some parts of Alaska under advisory. - Chris in Tampa, 3/11/2011, 3:37 am
- Live news stream from Hawaii - Chris in Tampa, 3/11/2011, 3:25 am
- For United States West Coast and Alaska - Chris in Tampa, 3/11/2011, 2:51 am
- Tsunami warning for the Pacific basin, dozens of countries - Chris in Tampa, 3/11/2011, 2:45 am
- Re: Catastrophic 8.9 earthquake and tsunami in Japan; TSUNAMI WARNING ISSUED FOR HAWAII - hillsboroughweather, 3/11/2011, 2:43 am
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