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Earthquake earlier today prompts tsunami watch for Hawaii and American Samoa >>>Expired<<<

Last Updated 2 months ago by Devontae Jackson.

Image courtesy of NOAA/NWS.

The National Weather Service has allowed this alert to expire.

Hawaii

“TSUNAMI MESSAGE NUMBER 2
HIZ001>003-005>009-012>014-016>021-023>026-042224-
/O.CON.PHEB.TS.A.0001.000000T0000Z-000000T0000Z/

BULLETIN
TSUNAMI MESSAGE NUMBER 2
NWS PACIFIC TSUNAMI WARNING CENTER EWA BEACH HI
1024 AM HST THU MAR 04 2021

TO – EMERGENCY MANAGEMENT IN THE STATE OF HAWAII

SUBJECT – TSUNAMI WATCH SUPPLEMENT

A TSUNAMI WATCH CONTINUES IN EFFECT FOR THE STATE OF HAWAII.

AN EARTHQUAKE HAS OCCURRED WITH THESE PRELIMINARY PARAMETERS

ORIGIN TIME – 0928 AM HST 04 MAR 2021
COORDINATES – 29.6 SOUTH 176.0 WEST
LOCATION – KERMADEC ISLANDS REGION
MAGNITUDE – 8.1 MOMENT

EVALUATION

BASED ON ALL AVAILABLE DATA A TSUNAMI MAY HAVE BEEN GENERATED BY
THIS EARTHQUAKE THAT COULD BE DESTRUCTIVE ON COASTAL AREAS EVEN
FAR FROM THE EPICENTER. AN INVESTIGATION IS UNDERWAY TO DETERMINE
IF THERE IS A TSUNAMI THREAT TO HAWAII.

IF TSUNAMI WAVES IMPACT HAWAII THE ESTIMATED EARLIEST ARRIVAL OF
THE FIRST TSUNAMI WAVE IS

                 0435 PM HST THU 04 MAR 2021

FURTHER MESSAGES WILL BE ISSUED HOURLY OR SOONER AS CONDITIONS
WARRANT UNTIL THE THREAT TO HAWAII HAS PASSED.

$$”

American Samoa

“TSUNAMI MESSAGE NUMBER 2
ASZ001>003-042224-
/O.CAN.PHEB.TS.W.0002.000000T0000Z-000000T0000Z/
/O.NEW.PHEB.TS.Y.0002.210304T2024Z-000000T0000Z/

BULLETIN
TSUNAMI MESSAGE NUMBER 2
NWS PACIFIC TSUNAMI WARNING CENTER EWA BEACH HI
924 AM SST THU MAR 04 2021

…A TSUNAMI ADVISORY IS NOW IN EFFECT FOR AMERICAN SAMOA…

IN THIS MESSAGE ARE REVISED ALERTS… AND EARTHQUAKE PARAMETERS.

AUDIENCE

EMERGENCY MANAGERS… MEDIA… GENERAL PUBLIC

EVALUATION

  • AN EARTHQUAKE WITH A PRELIMINARY MAGNITUDE OF 8.1 OCCURRED IN
    THE KERMADEC ISLANDS REGION AT 828 AM SST ON THURSDAY MARCH
    4 2021.
  • A HAZARDOUS TSUNAMI MAY HAVE BEEN GENERATED BY THIS NEARBY
    EARTHQUAKE THAT COULD SOON IMPACT NEARBY COASTS.
  • MONITORING IS UNDERWAY TO EVALUATE THE TSUNAMI THREAT.
  • A TSUNAMI WAS GENERATED BY THIS EARTHQUAKE. BASED ON ALL
    AVAILABLE DATA… THERE IS A THREAT TO AMERICAN SAMOA OF SEA
    LEVEL FLUCTUATIONS AND STRONG OCEAN CURRENTS THAT COULD BE A
    HAZARD ALONG BEACHES… IN HARBORS… AND IN COASTAL WATERS.
  • THE EARLIEST ESTIMATED TIME THAT HAZARDOUS SEA LEVEL
    FLUCTUATIONS AND STRONG OCEAN CURRENTS MAY BEGIN IN AMERICAN
    SAMOA IS 1019 AM SST ON THURSDAY MARCH 04 2021

RECOMMENDED ACTIONS

  • PERSONS IN OR NEAR THE OCEAN ALONG THE COASTS OF ALL OF
    AMERICAN SAMOA SHOULD MOVE IMMEDIATELY OUT OF THE WATER AND
    AWAY FROM BEACHES AND HARBORS.
  • DO NOT RETURN TO EVACUATED AREAS UNTIL THE ALL CLEAR IS GIVEN
    BY LOCAL AUTHORITIES.
  • PERSONS IN THE OCEAN SHOULD GET OUT OF THE WATER. PERSONS
    NEAR THE OCEAN SHOULD MOVE AWAY FROM BEACHES AND HARBORS.
  • FOLLOW ANY INSTRUCTIONS FROM GOVERNMENT AGENCIES.

ESTIMATED TIMES OF ARRIVAL

  • ESTIMATED TIMES OF ARRIVAL -ETA- OF THE INITIAL TSUNAMI WAVE
    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(SST) TAFUNA TUTUILA 14.3S 170.7W 1019 AM 03/04
    LEONE TUTUILA 14.3S 170.8W 1019 AM 03/04
    FAGAMALO TUTUILA 14.3S 170.8W 1019 AM 03/04
    FAGASA TUTUILA 14.3S 170.7W 1019 AM 03/04
    AMANAVE TUTUILA 14.3S 170.8W 1019 AM 03/04
    PAGO PAGO TUTUILA 14.3S 170.7W 1022 AM 03/04
    VATIA TUTUILA 14.2S 170.7W 1022 AM 03/04
    MASEFAU TUTUILA 14.3S 170.6W 1022 AM 03/04
    PAGAI TUTUILA 14.3S 170.6W 1022 AM 03/04
    AUMI TUTUILA 14.3S 170.7W 1022 AM 03/04
    TULA TUTUILA 14.3S 170.6W 1022 AM 03/04
    AUNUU ISLAND AUNUU 14.3S 170.6W 1022 AM 03/04
    TAU ISLAND MANUA 14.3S 169.5W 1025 AM 03/04
    OFU ISLAND MANUA 14.2S 169.7W 1026 AM 03/04
    OLESEGA ISLAND MANUA 14.2S 169.6W 1026 AM 03/04
    SWAINS ISLAND SWAINS 11.1S 171.1W 1047 AM 03/04

POTENTIAL IMPACTS

  • SEA LEVEL FLUCTUATIONS THAT ARE GENERALLY NO MORE THAN 3 FEET
    ABOVE AND BELOW THE TIDE LEVEL.
  • MINOR FLOODING OF BEACH AND HARBOR AREAS.
  • STRONG AND UNUSUAL OCEAN CURRENTS IN HARBORS… BAYS… AND
    OTHER NEAR SHORE WATERS.
  • THE HAZARD IS FORECAST TO BEGIN AROUND 1019 AM SST ON
    THURSDAY MARCH 04 AND IT CAN PERSIST FOR MANY HOURS OR
    LONGER.

PRELIMINARY EARTHQUAKE PARAMETERS – UPDATED

  • MAGNITUDE 8.1
  • ORIGIN TIME 828 AM SST MAR 04 2021
  • COORDINATES 29.6 SOUTH 176.0 WEST
  • DEPTH 6 MILES
  • LOCATION KERMADEC ISLANDS REGION

NEXT UPDATE AND ADDITIONAL INFORMATION

  • THE NEXT MESSAGE WILL BE ISSUED IN THIRTY MINUTES… OR
    SOONER IF THE SITUATION WARRANTS.
  • FURTHER INFORMATION ABOUT THIS EVENT MAY BE FOUND ON THE
    INTERNET AT WWW.TSUNAMI.GOV.
  • AUTHORITATIVE INFORMATION ABOUT THE EARTHQUAKE FROM THE U.S.
    GEOLOGICAL SURVEY CAN BE FOUND ON THE INTERNET AT
    EARTHQUAKE.USGS.GOV.

$$”

Go to weather.gov for the latest information.

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