Tsunami Waves Observed Following 7.3 Earthquake In New Zealand Thursday

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WELLINGTON, NEW ZEALAND. (THECOUNT) — This earthquake has been upgraded by USGS to a magnitude 7.3.

The following is the Pacific Tsunami Warning Center Alert issued following a magnitude 7.3 earthquake that struck Thursday around 5:30 a.m. PST.

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The warning says that tsunami wave have been observed for many costal areas of New Zealand.

NWS PACIFIC TSUNAMI WARNING CENTER EWA BEACH HI
1413 UTC THU MAR 4 2021

…PTWC TSUNAMI THREAT MESSAGE…

**** NOTICE **** NOTICE **** NOTICE **** NOTICE **** NOTICE *****

THIS MESSAGE IS ISSUED FOR INFORMATION ONLY IN SUPPORT OF THE
UNESCO/IOC PACIFIC TSUNAMI WARNING AND MITIGATION SYSTEM AND IS
MEANT FOR NATIONAL AUTHORITIES IN EACH COUNTRY OF THAT SYSTEM.

NATIONAL AUTHORITIES WILL DETERMINE THE APPROPRIATE LEVEL OF
ALERT FOR EACH COUNTRY AND MAY ISSUE ADDITIONAL OR MORE REFINED
INFORMATION.

**** NOTICE **** NOTICE **** NOTICE **** NOTICE **** NOTICE *****

THE TSUNAMI FORECAST IS UPDATED IN THIS MESSAGE.

NOTE REVISED EARTHQUAKE LOCATION

PRELIMINARY EARTHQUAKE PARAMETERS
———————————

* MAGNITUDE 7.3
* ORIGIN TIME 1327 UTC MAR 4 2021
* COORDINATES 37.6 SOUTH 179.5 EAST
* DEPTH 10 KM / 6 MILES
* LOCATION OFF EAST COAST OF THE NORTH ISLAND N.Z.

EVALUATION
———-

* AN EARTHQUAKE WITH A PRELIMINARY MAGNITUDE OF 7.3 OCCURRED
OFF THE EAST COAST OF NORTH ISLAND, NEW ZEALAND AT 1327 UTC
ON THURSDAY MARCH 4 2021.

* TSUNAMI WAVES HAVE BEEN OBSERVED.

* BASED ON ALL AVAILABLE DATA… HAZARDOUS TSUNAMI WAVES ARE
FORECAST FOR SOME COASTS.

TSUNAMI THREAT FORECAST…UPDATED
———————————

* TSUNAMI WAVES REACHING 0.3 TO 1 METERS ABOVE THE TIDE LEVEL
ARE POSSIBLE FOR SOME COASTS OF

NEW ZEALAND.

* TSUNAMI WAVES ARE FORECAST TO BE LESS THAN 0.3 METERS ABOVE
THE TIDE LEVEL FOR THE COASTS OF

COOK ISLANDS… FIJI… KERMADEC ISLANDS… NEW
CALEDONIA… NIUE… TONGA… AND VANUATU.

* ACTUAL AMPLITUDES AT THE COAST MAY VARY FROM FORECAST
AMPLITUDES DUE TO UNCERTAINTIES IN THE FORECAST AND LOCAL
FEATURES. IN PARTICULAR MAXIMUM TSUNAMI AMPLITUDES ON ATOLLS
AND AT LOCATIONS WITH FRINGING OR BARRIER REEFS WILL LIKELY
BE MUCH SMALLER THAN THE FORECAST INDICATES.

* FOR OTHER AREAS COVERED BY THIS PRODUCT A FORECAST HAS NOT
YET BEEN COMPUTED. THE FORECAST WILL BE EXPANDED IF
NECESSARY IN SUBSEQUENT PRODUCTS.

RECOMMENDED ACTIONS
——————-

* GOVERNMENT AGENCIES RESPONSIBLE FOR THREATENED COASTAL AREAS
SHOULD TAKE ACTION TO INFORM AND INSTRUCT ANY COASTAL
POPULATIONS AT RISK IN ACCORDANCE WITH THEIR OWN
EVALUATION… PROCEDURES AND THE LEVEL OF THREAT.

* PERSONS LOCATED IN THREATENED COASTAL AREAS SHOULD STAY ALERT
FOR INFORMATION AND FOLLOW INSTRUCTIONS FROM NATIONAL AND
LOCAL AUTHORITIES.

ESTIMATED TIMES OF ARRIVAL
————————–

* ESTIMATED TIMES OF ARRIVAL -ETA- OF THE INITIAL TSUNAMI WAVE
FOR PLACES WITHIN THREATENED REGIONS ARE GIVEN BELOW. ACTUAL
ARRIVAL TIMES MAY DIFFER AND THE INITIAL WAVE MAY NOT BE THE
LARGEST. A TSUNAMI IS A SERIES OF WAVES AND THE TIME BETWEEN
WAVES CAN BE FIVE MINUTES TO ONE HOUR.

LOCATION REGION COORDINATES ETA(UTC)
————————————————————
LOTTIN POINT NEW ZEALAND 37.5S 178.2E 1349 03/04
EAST CAPE NEW ZEALAND 37.7S 178.5E 1414 03/04
GISBORNE NEW ZEALAND 38.7S 178.0E 1421 03/04
MOUNT MAUNGANUI NEW ZEALAND 37.6S 176.2E 1433 03/04
WELLINGTON NEW ZEALAND 41.3S 174.8E 1445 03/04
PORT TAURANGA NEW ZEALAND 37.7S 176.2E 1445 03/04
NORTH CAPE NEW ZEALAND 34.4S 173.3E 1450 03/04
NAPIER NEW ZEALAND 39.5S 176.9E 1509 03/04
KAINGAROA CHATH NEW ZEALAND 43.7S 176.3W 1512 03/04
WHANGAREI NEW ZEALAND 35.8S 174.5E 1515 03/04
WAITANGI CHATHA NEW ZEALAND 43.9S 176.6W 1528 03/04
AUCKLAND EAST NEW ZEALAND 36.7S 175.0E 1534 03/04

POTENTIAL IMPACTS
—————–

* A TSUNAMI IS A SERIES OF WAVES. THE TIME BETWEEN WAVE CRESTS
CAN VARY FROM 5 MINUTES TO AN HOUR. THE HAZARD MAY PERSIST
FOR MANY HOURS OR LONGER AFTER THE INITIAL WAVE.

* IMPACTS CAN VARY SIGNIFICANTLY FROM ONE SECTION OF COAST TO
THE NEXT DUE TO LOCAL BATHYMETRY AND THE SHAPE AND ELEVATION
OF THE SHORELINE.

* IMPACTS CAN ALSO VARY DEPENDING UPON THE STATE OF THE TIDE AT
THE TIME OF THE MAXIMUM TSUNAMI WAVES.

* PERSONS CAUGHT IN THE WATER OF A TSUNAMI MAY DROWN… BE
CRUSHED BY DEBRIS IN THE WATER… OR BE SWEPT OUT TO SEA.

TSUNAMI OBSERVATIONS
——————–

* THE FOLLOWING ARE TSUNAMI WAVE OBSERVATIONS FROM COASTAL
AND/OR DEEP-OCEAN SEA LEVEL GAUGES AT THE INDICATED
LOCATIONS. THE MAXIMUM TSUNAMI HEIGHT IS MEASURED WITH
RESPECT TO THE NORMAL TIDE LEVEL.

GAUGE TIME OF MAXIMUM WAVE
COORDINATES MEASURE TSUNAMI PERIOD
GAUGE LOCATION LAT LON (UTC) HEIGHT (MIN)
————————————————————-
EAST CAPE NZ 37.6S 178.2E 1400 0.28M/ 0.9FT 06

NEXT UPDATE AND ADDITIONAL INFORMATION
————————————–

* THE NEXT MESSAGE WILL BE ISSUED IN ONE HOUR… OR SOONER IF
THE SITUATION WARRANTS.

* AUTHORITATIVE INFORMATION ABOUT THE EARTHQUAKE FROM THE U.S.
GEOLOGICAL SURVEY CAN BE FOUND ON THE INTERNET AT
EARTHQUAKE.USGS.GOV.

* FURTHER INFORMATION ABOUT THIS EVENT MAY BE FOUND AT
WWW.TSUNAMI.GOV.

* COASTAL REGIONS OF HAWAII… AMERICAN SAMOA… GUAM… AND
CNMI SHOULD REFER TO PACIFIC TSUNAMI WARNING CENTER MESSAGES
SPECIFICALLY FOR THOSE PLACES THAT CAN BE FOUND AT
WWW.TSUNAMI.GOV.

* COASTAL REGIONS OF CALIFORNIA… OREGON… WASHINGTON…
BRITISH COLUMBIA AND ALASKA SHOULD ONLY REFER TO U.S.
NATIONAL TSUNAMI WARNING CENTER MESSAGES THAT CAN BE FOUND
AT WWW.TSUNAMI.GOV.

DEVELOPING::

Quick geo facts: Wellington, the capital of New Zealand, sits near the North Island’s southernmost point on the Cook Strait. A compact city, it encompasses a waterfront promenade, sandy beaches, a working harbour and colourful timber houses on surrounding hills. From Lambton Quay, the iconic red Wellington Cable Car heads to the Wellington Botanic Gardens. Strong winds through the Cook Strait give it the nickname “Windy Wellington,” wikipedia.

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