Tsunami Warning issued for Hawaii, Guam, Taiwan


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A Tsunami Warning is now in effect for the state of Hawaii following an 8.9 magnitude earthquake off the east coast of Honshu, Japan.

Scientists at the Pacific Tsunami Warning Center in Ewa Beach said that based on available data, a tsunami may have been generated by the quake. They said the earliest that tsunami waves could reach Hawaii would be at 2:59 a.m. Friday. Tsunami alarms sounded at 9:59 p.m. on Thursday night.

The Tsunami Warning is extended to Guam and Taiwan as well.

Sources are saying it’s the worst earthquake ever to strike Japan. It sent people fleeing out of buildings in the capital.

The epicenter is just 231 miles from Tokyo, according to the United States Geological Survey.

Floodwaters rattled buildings and sent cars into the rushing waves. Plus, the quake shook office buildings, sending papers flying, and workers struggling for balance.

On Wednesday and Thursday, two quakes struck off the coast of Honshu. One was magnitude 6.3 and another 7.2. Neither caused significant damage.

Stay with Hawaii News Now and HawaiiNewsNow.com for the latest.

Related: Tsunami Evacuation Maps (from Hawaii State Civil Defense. Scroll to “Tsunami Evacuation Zone Mapping Tool.”)

via Tsunami Warning issued for Hawaii, Guam, Taiwan – Hawaii News Now – KGMB and KHNL Home.

Hawaii Under Tsunami Warning After Japan Quake

HONOLULU — The Pacific Tsunami Warning Center in Hawaii said a tsunami warning is in effect for a large swath of the Pacific including Hawaii after a magnitude 8.9 earthquake hit Japan.

A tsunami warning was also in effect for Japan, Russia, Marcus Island and the Northern Marianas. A tsunami watch has been issued for Guam, Taiwan, the Philippines and Indonesia.KITV meteorologists said a tsunami watch was also in effect for the state of Hawaii.If tsunami waves impact Hawaii, the estimated earliest arrival of the first tsunami wave would be 2:59 a.m. Friday, local time, according to emergency management officials in Hawaii.

via Hawaii Under Tsunami Warning After Japan

Here is the Warning from PACIFIC TSUNAMI WARNING CENTER

BULLETIN
TSUNAMI MESSAGE NUMBER 4
NWS PACIFIC TSUNAMI WARNING CENTER EWA BEACH HI
1030 PM HST THU MAR 10 2011

TO – CIVIL DEFENSE IN THE STATE OF HAWAII

SUBJECT – TSUNAMI WARNING SUPPLEMENT

A TSUNAMI WARNING CONTINUES IN EFFECT FOR THE STATE OF HAWAII.
NOTE REVISED ESTIMATED TIME OF ARRIVAL IN 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
——————- —– —— —– ————— —–
TOSASHIMIZU SHIKOKU 32.8N 133.0E 0752Z 0.94M / 3.1FT 72MIN
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

0307 AM HST FRI 11 MAR 2011

MESSAGES WILL BE ISSUED HOURLY OR SOONER AS CONDITIONS WARRANT.

via National Weather Service Watch Warning Advisory Summary.

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