A very strong magnitude 7.7 earthquake has taken place in the south Pacific ocean, near the island of Tonga. The quake, at a shallow depth of 21 miles HAS GENERATED a small Tsunami, which is impacting land areas near the quake zone.
From the Pacific Tsunami Warning Center:
ZCZC
WEZS40 PHEB 111157
TSUPPG
ASZ001>003-111357-
/O.NEW.PHEB.TS.Y.0003.221111T1157Z-000000T0000Z/
BULLETIN
TSUNAMI MESSAGE NUMBER 3
NWS PACIFIC TSUNAMI WARNING CENTER HONOLULU HI
1257 AM SST FRI NOV 11 2022
...THE TSUNAMI ADVISORY CONTINUES 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 7.3 OCCURRED IN
THE TONGA ISLANDS REGION AT 1149 PM SST ON THURSDAY NOVEMBER
10 2022.
* SOME AREAS MAY HAVE EXPERIENCED STRONG SHAKING.
* TSUNAMI WAVES FROM THIS EARTHQUAKE HAVE BEEN OBSERVED AND THE
TSUNAMI THREAT CONTINUES.
* 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
1230 AM SST ON FRIDAY NOVEMBER 11 2022
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 1230 AM 11/11
LEONE TUTUILA 14.3S 170.8W 1231 AM 11/11
FAGAMALO TUTUILA 14.3S 170.8W 1231 AM 11/11
AMANAVE TUTUILA 14.3S 170.8W 1231 AM 11/11
FAGASA TUTUILA 14.3S 170.7W 1233 AM 11/11
VATIA TUTUILA 14.2S 170.7W 1234 AM 11/11
PAGO PAGO TUTUILA 14.3S 170.7W 1234 AM 11/11
AUMI TUTUILA 14.3S 170.7W 1234 AM 11/11
AUNUU ISLAND AUNUU 14.3S 170.6W 1235 AM 11/11
OFU ISLAND MANUA 14.2S 169.7W 1237 AM 11/11
TAU ISLAND MANUA 14.3S 169.5W 1237 AM 11/11
TULA TUTUILA 14.3S 170.6W 1237 AM 11/11
OLESEGA ISLAND MANUA 14.2S 169.6W 1237 AM 11/11
MASEFAU TUTUILA 14.3S 170.6W 1238 AM 11/11
PAGAI TUTUILA 14.3S 170.6W 1238 AM 11/11
SWAINS ISLAND SWAINS 11.1S 171.1W 1258 AM 11/11
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 TIDE LEVEL.
GAUGE TIME OF MAXIMUM WAVE
COORDINATES MEASURE TSUNAMI PERIOD
GAUGE LOCATION LAT LON (SST) HEIGHT (MIN)
-------------------------------------------------------------
PAGO PAGO AS 14.3S 170.7W 1240 AM 0.3FT/ 0.1M 08
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 BEGAN AROUND 1230 AM SST ON FRIDAY NOVEMBER 11 AND
IT CAN PERSIST FOR MANY HOURS OR LONGER.
PRELIMINARY EARTHQUAKE PARAMETERS - UPDATED
-------------------------------------------
* MAGNITUDE 7.3
* ORIGIN TIME 1149 PM SST NOV 10 2022
* COORDINATES 19.3 SOUTH 172.1 WEST
* DEPTH 36 MILES
* LOCATION TONGA 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.
$$
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