No Tsunami Threat to Hawai‘i After 8.1 Mexico Earthquake

The Pacific Tsunami Warning Center is currently evaluating the effects of an 8.1 (preliminary 8.0) magnitude earthquake reported at 6:49 p.m. HST on Thursday, Sept. 7, 2017 off the coast of Chiapas, Mexico.

The agency issued an update at 8:27 p.m. HST saying that based on all available data, there is no tsunami threat to Hawaii.

The agency did issue a tsunami threat message for other parts of the Pacific located closer to the earthquake’s epicenter.

As of 11:04 p.m. HST a tsunami was confirmed in Mexico with the largest wave so far at 2.3 feet.

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

AMERICAN SAMOA… ANTARCTICA… COOK ISLANDS… ECUADOR…
EL SALVADOR… FIJI… FRENCH POLYNESIA… GUATEMALA…
KIRIBATI… NEW ZEALAND… SAMOA… TOKELAU… TUVALU…
VANUATU… AND WALLIS AND FUTUNA.

The USGS reports that the quake occurred at a depth of 35 km and was located:

60 miles SW of Pijijiapan, Chiapas, Mexico
66 miles WSW of Mapastepec, Chiapas, Mexico
73 miles S of Tonal, Chiapas, Mexico
102 miles W of Tapachula, Chiapas, Mexico
221 miles W of GUATEMALA CITY, Guatemala
According to initial reports, there were multiple reports of the quake being felt in: Santa Catarina Pinula, Guatemala; Mexico City, Distrito Federal; and Antigua Guatemala, Sacatepéquez.

*Check back for updates, which will be posted as they become available.

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)
————————————————————
PUERTO MADERO MEXICO 14.8N 92.5W 0548 09/08
SALINA CRUZ MEXICO 16.5N 95.2W 0551 09/08
ACAPULCO MEXICO 16.9N 99.9W 0552 09/08
SIPICATE GUATEMALA 13.9N 91.2W 0604 09/08
ACAJUTLA EL SALVADOR 13.6N 89.8W 0610 09/08
LAZARO CARDENAS MEXICO 17.9N 102.2W 0619 09/08
BALTRA ISLAND ECUADOR 0.5S 90.3W 0804 09/08
HIVA OA FRENCH POLYNESIA 10.0S 139.0W 1248 09/08
CHRISTMAS ISLAN KIRIBATI 2.0N 157.5W 1422 09/08
MALDEN ISLAND KIRIBATI 3.9S 154.9W 1426 09/08
FLINT ISLAND KIRIBATI 11.4S 151.8W 1426 09/08
PAPEETE FRENCH POLYNESIA 17.5S 149.6W 1450 09/08
RAPA ITI FRENCH POLYNESIA 27.6S 144.3W 1502 09/08
PENRYN ISLAND COOK ISLANDS 8.9S 157.8W 1505 09/08
TUBUAI FRENCH POLYNESIA 23.3S 149.5W 1510 09/08
RAROTONGA COOK ISLANDS 21.2S 159.8W 1609 09/08
PUKAPUKA ISLAND COOK ISLANDS 10.8S 165.9W 1619 09/08
NUKUNONU ISLAND TOKELAU 9.2S 171.8W 1652 09/08
PAGO PAGO AMERICAN SAMOA 14.3S 170.7W 1705 09/08
APIA SAMOA 13.8S 171.8W 1714 09/08
WALLIS ISLAND WALLIS AND FUTUN 13.3S 176.3W 1746 09/08
FUNAFUTI ISLAND TUVALU 7.9S 178.5E 1751 09/08
FUTUNA ISLAND WALLIS AND FUTUN 14.3S 178.2W 1812 09/08
TARAWA ISLAND KIRIBATI 1.5N 173.0E 1832 09/08
SUVA FIJI 18.1S 178.4E 1915 09/08
KAINGAROA CHATH NEW ZEALAND 43.7S 176.3W 1955 09/08
WAITANGI CHATHA NEW ZEALAND 43.9S 176.6W 1957 09/08
ESPERITU SANTO VANUATU 15.1S 167.3E 1959 09/08
ANATOM ISLAND VANUATU 20.2S 169.9E 2020 09/08
CAPE ADARE ANTARCTICA 71.0S 170.0E 2155 09/08

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.
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* 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)
————————————————————-
SALINA CRUZ MX 16.2N 95.2W 0541 0.48M/ 1.6FT 20
PURETO ANGEL MX 15.7N 96.5W 0517 0.29M/ 1.0FT 24
HUATULCO MX 15.8N 96.1W 0514 0.69M/ 2.3FT 12