TSUNAMI MESSAGE NUMBER 5
NWS PACIFIC TSUNAMI WARNING CENTER EWA BEACH HI
1624 UTC WED FEB 10 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 *****
THIS MESSAGE IS A CORRECTION TO THE FORECAST THAT WAS ISSUED IN
TSUNAMI MESSAGE NUMBER 4. THE FORECAST IS UNCHANGED FROM TSUNAMI
MESSAGES 2 AND 3. NEW SEA LEVEL MEASUREMENTS ARE INCLUDED.
PRELIMINARY EARTHQUAKE PARAMETERS
---------------------------------
* MAGNITUDE 7.7
* ORIGIN TIME 1320 UTC FEB 10 2021
* COORDINATES 23.1 SOUTH 171.5 EAST
* DEPTH 33 KM / 20 MILES
* LOCATION SOUTHEAST OF LOYALTY ISLANDS
EVALUATION
----------
* AN EARTHQUAKE WITH A PRELIMINARY MAGNITUDE OF 7.7 OCCURRED
SOUTHEAST OF THE LOYALTY ISLANDS AT 1320 UTC ON WEDNESDAY
FEBRUARY 10 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
FIJI... NEW ZEALAND... AND VANUATU.
* TSUNAMI WAVES ARE FORECAST TO BE LESS THAN 0.3 METERS ABOVE
THE TIDE LEVEL FOR THE COASTS OF
AMERICAN SAMOA... AUSTRALIA... CHUUK... COOK ISLANDS...
FRENCH POLYNESIA... HOWLAND AND BAKER... JARVIS ISLAND...
KERMADEC ISLANDS... KIRIBATI... KOSRAE... MARSHALL
ISLANDS... NAURU... NEW CALEDONIA... NIUE... PALMYRA
ISLAND... PAPUA NEW GUINEA... POHNPEI... SAMOA... SOLOMON
ISLANDS... TOKELAU... TONGA... TUVALU... AND WALLIS AND
FUTUNA.
* 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 1559 02/10
WHANGAREI NEW ZEALAND 35.8S 174.5E 1559 02/10
MOUNT MAUNGANUI NEW ZEALAND 37.6S 176.2E 1612 02/10
PORT TAURANGA NEW ZEALAND 37.7S 176.2E 1622 02/10
AUCKLAND WEST NEW ZEALAND 37.1S 174.2E 1624 02/10
NEW PLYMOUTH NEW ZEALAND 39.1S 174.1E 1704 02/10
AUCKLAND EAST NEW ZEALAND 36.7S 175.0E 1705 02/10
WANGANUI NEW ZEALAND 39.9S 175.0E 1900 02/10
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)
-------------------------------------------------------------
GREAT BARRIER IS NZ 36.2S 175.5E 1609 0.17M/ 0.6FT 08
NORTH CAPE NZ 34.4S 173.0E 1553 0.22M/ 0.7FT 06
LIFOU NEW CALEDONIA 20.9S 167.3E 1522 0.19M/ 0.6FT 08
KINGSTON NORFOLK IS 29.1S 168.0E 1550 0.47M/ 1.5FT 06
MARE NEW CALEDONIA 21.5S 167.9E 1513 0.13M/ 0.4FT 06
SUVA VITI LEVU FJ 18.1S 178.4E 1511 0.05M/ 0.2FT 28
OUINNE NEW CALEDONI 22.0S 166.7E 1501 0.29M/ 1.0FT 08
LENAKEL VU 19.5S 169.3E 1441 0.78M/ 2.6FT 04
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.
$$
