Header Ad

Tsunami warnings issued after 8.1 earthquake off New Zealand

ECONOMYNEXT – Tsunami waves up to three metres or higher may be generated along the coasts of Kermadec Islands, New Caledonia and Vanuatu following an 8.1 magnitude earthquake off New Zealand, the Pacific Tsunami Warning Centre said.

Waves between 0.3 to 1.0 metres high could be generated along the coasts of New Zealand, Australia, Cook Islands, French Polynesia, Kosrae, Pohnpei, Fiji, Nauru, Pitcairn Island, Samoa, Solomon Islands, Tonga and Wallis and Futuna.

Kermadec Islands could see waves higher than three metres.

Waves could also reach Antarctica, Chile, Colombia, Costa Rica, Ecuador, Mexico, Nicaragua, Panama, and Peru.

Waves have already been observed at NUKUALOFA, the PTWC said.

There could several waves up to several hours after the first wave, the PTWC said.

* 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)
————————————————————
PORT TAURANGA NEW ZEALAND 37.7S 176.2E 2126 03/04
EAST CAPE NEW ZEALAND 37.7S 178.5E 2131 03/04
APIA SAMOA 13.8S 171.8W 2132 03/04
WHANGAREI NEW ZEALAND 35.8S 174.5E 2134 03/04
WALLIS ISLAND WALLIS AND FUTUN 13.3S 176.3W 2143 03/04
NAPIER NEW ZEALAND 39.5S 176.9E 2145 03/04
RAROTONGA COOK ISLANDS 21.2S 159.8W 2146 03/04
PUKAPUKA ISLAND COOK ISLANDS 10.8S 165.9W 2205 03/04
FUTUNA ISLAND WALLIS AND FUTUN 14.3S 178.2W 2206 03/04
WELLINGTON NEW ZEALAND 41.3S 174.8E 2206 03/04
ANATOM ISLAND VANUATU 20.2S 169.9E 2213 03/04
SUVA FIJI 18.1S 178.4E 2213 03/04
AUCKLAND EAST NEW ZEALAND 36.7S 175.0E 2235 03/04
AUCKLAND WEST NEW ZEALAND 37.1S 174.2E 2248 03/04
TUBUAI FRENCH POLYNESIA 23.3S 149.5W 2248 03/04
NOUMEA NEW CALEDONIA 22.3S 166.5E 2300 03/04
PENRYN ISLAND COOK ISLANDS 8.9S 157.8W 2307 03/04
PAPEETE FRENCH POLYNESIA 17.5S 149.6W 2317 03/04
RAPA ITI FRENCH POLYNESIA 27.6S 144.3W 2318 03/04
ESPERITU SANTO VANUATU 15.1S 167.3E 2319 03/04
WANGANUI NEW ZEALAND 39.9S 175.0E 2329 03/04
NEW PLYMOUTH NEW ZEALAND 39.1S 174.1E 2329 03/04
SANTA CRUZ ISLA SOLOMON ISLANDS 10.9S 165.9E 2352 03/04
RIKITEA FRENCH POLYNESIA 23.1S 135.0W 0042 03/05
NAURU NAURU 0.5S 166.9E 0050 03/05
SYDNEY AUSTRALIA 33.9S 151.4E 0051 03/05
BRISBANE AUSTRALIA 27.2S 153.3E 0104 03/05
HIVA OA FRENCH POLYNESIA 10.0S 139.0W 0112 03/05
PITCAIRN ISLAND PITCAIRN 25.1S 130.1W 0115 03/05
KOSRAE ISLAND KOSRAE 5.5N 163.0E 0145 03/05
CAPE ADARE ANTARCTICA 71.0S 170.0E 0156 03/05
POHNPEI ISLAND POHNPEI 7.0N 158.2E 0233 03/05
GLADSTONE AUSTRALIA 23.8S 151.4E 0254 03/05
EASTER ISLAND CHILE 27.1S 109.4W 0359 03/05
MACKAY AUSTRALIA 21.1S 149.3E 0444 03/05
GOLFO DE PENAS CHILE 47.1S 74.9W 0644 03/05
CORRAL CHILE 39.8S 73.5W 0735 03/05
TALCAHUANO CHILE 36.7S 73.1W 0746 03/05
VALPARAISO CHILE 33.0S 71.6W 0803 03/05
LAZARO CARDENAS MEXICO 17.9N 102.2W 0809 03/05
COQUIMBO CHILE 29.9S 71.4W 0818 03/05
ACAPULCO MEXICO 16.9N 99.9W 0825 03/05
CALDERA CHILE 27.1S 70.8W 0833 03/05
ANTOFAGASTA CHILE 23.3S 70.4W 0855 03/05
SAN JUAN PERU 15.3S 75.2W 0911 03/05
BALTRA ISLAND ECUADOR 0.5S 90.3W 0913 03/05
TALARA PERU 4.6S 81.5W 0916 03/05
IQUIQUE CHILE 20.2S 70.1W 0917 03/05
LA PUNTA PERU 12.1S 77.2W 0918 03/05
MOLLENDO PERU 17.1S 72.0W 0923 03/05
ARICA CHILE 18.5S 70.3W 0926 03/05
PUERTO MONTT CHILE 41.5S 73.0W 0930 03/05
SALINA CRUZ MEXICO 16.5N 95.2W 0934 03/05
ISLA DEL COCO COSTA RICA 5.5N 87.1W 0937 03/05
LA LIBERTAD ECUADOR 2.2S 81.2W 0937 03/05
CHIMBOTE PERU 9.0S 78.8W 0943 03/05
PIMENTAL PERU 6.9S 80.0W 0955 03/05
CABO SAN ELENA COSTA RICA 10.9N 86.0W 1012 03/05
PUERTO QUEPOS COSTA RICA 9.4N 84.2W 1023 03/05
ESMERELDAS ECUADOR 1.2N 79.8W 1024 03/05
CABO MATAPALO COSTA RICA 8.4N 83.3W 1025 03/05
CORINTO NICARAGUA 12.5N 87.2W 1026 03/05
PUERTO SANDINO NICARAGUA 12.2N 86.8W 1026 03/05
PUNTA BURICA PANAMA 8.0N 82.9W 1032 03/05
SAN JUAN DL SUR NICARAGUA 11.2N 85.9W 1033 03/05
TUMACO COLOMBIA 1.8N 78.9W 1043 03/05
PUNTA MALA PANAMA 7.5N 80.0W 1110 03/05
BAHIA SOLANO COLOMBIA 6.3N 77.4W 1114 03/05
PUERTO PINA PANAMA 7.4N 78.0W 1119 03/05
BUENAVENTURA COLOMBIA 3.8N 77.2W 1128 03/05
BALBOA HEIGHTS PANAMA 9.0N 79.6W 1330 03/05

Extracts are reproduced below:

TSUNAMI MESSAGE NUMBER 5
NWS PACIFIC TSUNAMI WARNING CENTER EWA BEACH HI
2224 UTC THU MAR 4 2021

Advertisement

 

 

 

..PTWC TSUNAMI THREAT MESSAGE…

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

* MAGNITUDE 8.1
* ORIGIN TIME 1928 UTC MAR 4 2021
* COORDINATES 29.6 SOUTH 176.0 WEST
* DEPTH 10 KM / 6 MILES
* LOCATION KERMADEC ISLANDS REGION

EVALUATION
———-

* AN EARTHQUAKE WITH A PRELIMINARY MAGNITUDE OF 8.1 OCCURRED IN
THE KERMADEC ISLANDS REGION AT 1928 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
———————–

* TSUNAMI WAVES REACHING MORE THAN 3 METERS ABOVE THE TIDE
LEVEL ARE POSSIBLE ALONG SOME COASTS OF

KERMADEC ISLANDS.

* TSUNAMI WAVES REACHING 1 TO 3 METERS ABOVE THE TIDE LEVEL ARE
POSSIBLE ALONG SOME COASTS OF

NEW CALEDONIA… AND VANUATU.

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

ANTARCTICA… AUSTRALIA… CHILE… COLOMBIA… COOK
ISLANDS… COSTA RICA… ECUADOR… FIJI… FRENCH
POLYNESIA… KOSRAE… MEXICO… NAURU… NEW ZEALAND…
NICARAGUA… PANAMA… PERU… PITCAIRN ISLANDS…
POHNPEI… SAMOA… SOLOMON ISLANDS… TONGA… 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.

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)
————————————————————-
NUKUALOFA TO 21.1S 175.2W 2129 0.05M/ 0.2FT 30

Latest Comments

Your email address will not be published. Required fields are marked *