Overall Green Earthquake in Tonga on 08 Aug 2023 18:38 UTC

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M 5.9 in Tonga on 08 Aug 2023 18:38 UTC

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Measurements Levels

SOURCE	GAUGE LOCATION	LAT	LON	TIME (UTC)	HEIGHT (m)	PERIOD (min)

08/08 18:54 WEZS42PHEB081851

2023-08-08 18:54 message from NTWC link

Key information extracted from original GTS message :

Evaluation

An earthquake with a preliminary magnitude of 6.2 occurred about 89 miles SOUTH of savaii ISLAND at 739 am sst on tuesday AUGUST 8 2023
Based on all available data there is no TSUNAMI threat to AMERICAN SAMOA from this earthquake
Some areas MAY have experienced very strong shaking

Original Message :

WEZS42 PHEB 081851
TIBPPG

ASZ001>004-082051-

TSUNAMI INFORMATION STATEMENT NUMBER 1
NWS PACIFIC TSUNAMI WARNING CENTER HONOLULU HI
751 AM SST TUE AUG 08 2023

...NO TSUNAMI THREAT FROM A NEARBY EARTHQUAKE...

AUDIENCE
--------
EMERGENCY MANAGERS... MEDIA... GENERAL PUBLIC

EVALUATION
----------

* AN EARTHQUAKE WITH A PRELIMINARY MAGNITUDE OF 6.2 OCCURRED
ABOUT 89 MILES SOUTH OF SAVAII ISLAND AT 739 AM SST ON
TUESDAY AUGUST 8 2023.

* BASED ON ALL AVAILABLE DATA... THERE IS NO TSUNAMI THREAT TO
AMERICAN SAMOA FROM THIS EARTHQUAKE.

* SOME AREAS MAY HAVE EXPERIENCED VERY STRONG SHAKING.

RECOMMENDED ACTIONS
-------------------

* BE OBSERVANT AND EXERCISE NORMAL CAUTION IF YOU ARE NEAR OR
IN THE OCEAN. OTHERWISE... NO ACTION IS REQUIRED.

POTENTIAL IMPACTS
-----------------

* NO TSUNAMI IMPACTS ARE EXPECTED.

PRELIMINARY EARTHQUAKE PARAMETERS
---------------------------------

* MAGNITUDE 6.2
* ORIGIN TIME 739 AM SST AUG 08 2023
* COORDINATES 15.0 SOUTH 173.0 WEST
* DEPTH 75 MILES
* LOCATION ABOUT 89 MILES SOUTH OF SAVAII ISLAND

NEXT UPDATE AND ADDITIONAL INFORMATION
--------------------------------------

* THIS WILL BE THE ONLY STATEMENT ISSUED FOR THIS EVENT UNLESS
ADDITIONAL DATA ARE RECEIVED OR THE SITUATION CHANGES.

* 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.

$$

>

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