M 7.3 in Tonga Islands Region on 11 Nov 2022 10:48 UTC

Global Telecommunication Service

GTS (Global Telecommunication Service) is the official Warning and Alerting channel by the World Meteorological Organization (WMO) adopted by several Warning Organizations. As soon as a new GTS message regarding Tropical Cyclones(WT) or Tsunami(WE) the messages are processed and possibly assigned to the specific event. When a new GTS message is present an new tab in the specific event report page is present.The presence of a GTS message is shown in the homepage with a dedicated icon.

Click on the messages list to visualize on the right the detailed text.



2022-11-11 12:23 message from NTWC link

Key information extracted from original GTS message :
Evaluation

  • An earthquake with a preliminary magnitude of 7.3 occurred in the TONGA ISLANDS region at 1049 UTC on friday NOVEMBER 11 2022
  • Based on all available data the TSUNAMI threat from this earthquake has now passed
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 LOCATIONLATLONTIME (UTC)HEIGHT (m)PERIOD (min)
Nukualofa To-21.1-175.211: 510.0216
Pago Pago As-14.3-170.711: 500.1212


Original Message :

WEPA40 PHEB 111223
TSUPAC

TSUNAMI MESSAGE NUMBER 3
NWS PACIFIC TSUNAMI WARNING CENTER HONOLULU HI
1222 UTC FRI NOV 11 2022

...PTWC FINAL TSUNAMI THREAT MESSAGE...


**** NOTICE **** NOTICE **** NOTICE **** NOTICE **** NOTICE *****

THIS MESSAGE IS ISSUED FOR INFORMATION ONLY IN SUPPORT OF THE
UNESCO/IOC PACIFIC TSUNAMI WARNING AND MITIGATION SYSTEM AND IS
MEANT FOR NATIONAL AUTHORITIES IN EACH COUNTRY OF THAT SYSTEM.

NATIONAL AUTHORITIES WILL DETERMINE THE APPROPRIATE LEVEL OF
ALERT FOR EACH COUNTRY AND MAY ISSUE ADDITIONAL OR MORE REFINED
INFORMATION.

**** NOTICE **** NOTICE **** NOTICE **** NOTICE **** NOTICE *****

THE TSUNAMI FORECAST IS UNCHANGED IN THIS MESSAGE.


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

* MAGNITUDE 7.3
* ORIGIN TIME 1049 UTC NOV 11 2022
* COORDINATES 19.3 SOUTH 172.1 WEST
* DEPTH 58 KM / 36 MILES
* LOCATION TONGA REGION


EVALUATION
----------

* AN EARTHQUAKE WITH A PRELIMINARY MAGNITUDE OF 7.3 OCCURRED IN
THE TONGA ISLANDS REGION AT 1049 UTC ON FRIDAY NOVEMBER 11
2022.

* BASED ON ALL AVAILABLE DATA... THE TSUNAMI THREAT FROM THIS
EARTHQUAKE HAS NOW PASSED.


TSUNAMI THREAT FORECAST...UPDATED
---------------------------------

* THERE IS NO LONGER A TSUNAMI THREAT FROM THIS EARTHQUAKE.


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

* REMAIN OBSERVANT AND EXERCISE NORMAL CAUTION NEAR THE SEA.
OTHERWISE... NO ACTION IS REQUIRED.


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

* MINOR SEA LEVEL FLUCTUATIONS MAY OCCUR IN SOME COASTAL AREAS
NEAR THE EARTHQUAKE OVER THE NEXT FEW HOURS.


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 1151 0.02M/ 0.1FT 16
PAGO PAGO AS 14.3S 170.7W 1150 0.12M/ 0.4FT 12


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

* THIS WILL BE THE FINAL STATEMENT ISSUED FOR THIS EVENT UNLESS
NEW INFORMATION IS RECEIVED OR THE SITUATION CHANGES.

* AUTHORITATIVE INFORMATION ABOUT THE EARTHQUAKE FROM THE U.S.
GEOLOGICAL SURVEY CAN BE FOUND ON THE INTERNET AT
EARTHQUAKE.USGS.GOV.

* FURTHER INFORMATION ABOUT THIS EVENT MAY BE FOUND AT
WWW.TSUNAMI.GOV.

* COASTAL REGIONS OF HAWAII... AMERICAN SAMOA... GUAM... AND
CNMI SHOULD REFER TO PACIFIC TSUNAMI WARNING CENTER MESSAGES
SPECIFICALLY FOR THOSE PLACES THAT CAN BE FOUND AT
WWW.TSUNAMI.GOV.

* COASTAL REGIONS OF CALIFORNIA... OREGON... WASHINGTON...
BRITISH COLUMBIA AND ALASKA SHOULD ONLY REFER TO U.S.
NATIONAL TSUNAMI WARNING CENTER MESSAGES THAT CAN BE FOUND
AT WWW.TSUNAMI.GOV.

$$

>

2022-11-11 11:59 message from NTWC link

Key information extracted from original GTS message :
Evaluation

  • An earthquake with a preliminary magnitude of 7.3 occurred in the TONGA ISLANDS region at 1049 UTC on friday NOVEMBER 11 2022
  • TSUNAMI waves have been observed
  • Based on all available data hazardous TSUNAMI waves are forecast for some coasts
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 LOCATIONLATLONTIME (UTC)HEIGHT (m)PERIOD (min)
Pago Pago As-14.3-170.711: 400.0808


Original Message :

WEPA40 PHEB 111158
TSUPAC

TSUNAMI MESSAGE NUMBER 2
NWS PACIFIC TSUNAMI WARNING CENTER HONOLULU HI
1158 UTC FRI NOV 11 2022

...PTWC TSUNAMI THREAT MESSAGE...


**** NOTICE **** NOTICE **** NOTICE **** NOTICE **** NOTICE *****

THIS MESSAGE IS ISSUED FOR INFORMATION ONLY IN SUPPORT OF THE
UNESCO/IOC PACIFIC TSUNAMI WARNING AND MITIGATION SYSTEM AND IS
MEANT FOR NATIONAL AUTHORITIES IN EACH COUNTRY OF THAT SYSTEM.

NATIONAL AUTHORITIES WILL DETERMINE THE APPROPRIATE LEVEL OF
ALERT FOR EACH COUNTRY AND MAY ISSUE ADDITIONAL OR MORE REFINED
INFORMATION.

**** NOTICE **** NOTICE **** NOTICE **** NOTICE **** NOTICE *****

THE TSUNAMI FORECAST IS UPDATED IN THIS MESSAGE.


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

* MAGNITUDE 7.3
* ORIGIN TIME 1049 UTC NOV 11 2022
* COORDINATES 19.3 SOUTH 172.1 WEST
* DEPTH 58 KM / 36 MILES
* LOCATION TONGA REGION


EVALUATION
----------

* AN EARTHQUAKE WITH A PRELIMINARY MAGNITUDE OF 7.3 OCCURRED IN
THE TONGA ISLANDS REGION AT 1049 UTC ON FRIDAY NOVEMBER 11
2022.

* TSUNAMI WAVES HAVE BEEN OBSERVED.

* BASED ON ALL AVAILABLE DATA... HAZARDOUS TSUNAMI WAVES ARE
FORECAST FOR SOME COASTS.


TSUNAMI THREAT FORECAST...UPDATED
---------------------------------

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

TONGA.


* TSUNAMI WAVES ARE FORECAST TO BE LESS THAN 0.3 METERS ABOVE
THE TIDE LEVEL FOR THE COASTS OF

AMERICAN SAMOA... COOK ISLANDS... FIJI... FRENCH
POLYNESIA... KERMADEC ISLANDS... KIRIBATI... NEW
ZEALAND... NIUE... SAMOA... SOLOMON ISLANDS... TOKELAU...
TUVALU... 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.


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)
------------------------------------------------------------
HOLEVA TONGA 18.6S 173.9W 1109 11/11
NIUATOPUTAPU TONGA 15.9S 173.8W 1128 11/11
NUKUALOFA TONGA 21.0S 175.2W 1130 11/11


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)
-------------------------------------------------------------
PAGO PAGO AS 14.3S 170.7W 1140 0.08M/ 0.3FT 08


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

* THE NEXT MESSAGE WILL BE ISSUED IN ONE HOUR... OR SOONER IF
THE SITUATION WARRANTS.

* AUTHORITATIVE INFORMATION ABOUT THE EARTHQUAKE FROM THE U.S.
GEOLOGICAL SURVEY CAN BE FOUND ON THE INTERNET AT
EARTHQUAKE.USGS.GOV.

* FURTHER INFORMATION ABOUT THIS EVENT MAY BE FOUND AT
WWW.TSUNAMI.GOV.

* COASTAL REGIONS OF HAWAII... AMERICAN SAMOA... GUAM... AND
CNMI SHOULD REFER TO PACIFIC TSUNAMI WARNING CENTER MESSAGES
SPECIFICALLY FOR THOSE PLACES THAT CAN BE FOUND AT
WWW.TSUNAMI.GOV.

* COASTAL REGIONS OF CALIFORNIA... OREGON... WASHINGTON...
BRITISH COLUMBIA AND ALASKA SHOULD ONLY REFER TO U.S.
NATIONAL TSUNAMI WARNING CENTER MESSAGES THAT CAN BE FOUND
AT WWW.TSUNAMI.GOV.

$$

>

2022-11-11 11:28 message from NTWC link

Key information extracted from original GTS message :
Evaluation

  • There is no TSUNAMI danger for the u s west coast BRITISH columbia or alaska
  • Based on earthquake information and historic TSUNAMI records the earthquake is not expected to generate a tsunami
  • An earthquake has occurred with parameters listed below
  • Preliminary earthquake parameters - updated
  • The following parameters are based on a rapid preliminary assessment of the earthquake and changes MAY occur
  • Magnitude 7.7
  • Origin time 0149 akst nov 11.2022 0249 pst nov 11 2022 1049 UTC nov 11
  • Coordinates 19.3 SOUTH 172 0 west
  • Depth 21 miles
  • Location in the TONGA ISLANDS region additional information and next update
  • Refer to the internet site tsunami
  • Gov for more information
  • Pacific coastal regions outside california oregon washington BRITISH columbia and alaska should refer to the pacific TSUNAMI warning center messages at tsunami
  • Gov
  • This will be the final u s national TSUNAMI warning center message issued for this event unless additional information becomes available

Original Message :

WEAK53 PAAQ 111126
TIBAK1

Tsunami Information Statement Number 2
NWS National Tsunami Warning Center Palmer AK
326 AM PST Fri Nov 11 2022

UPDATES
-------
* Revised magnitude


..THIS IS A TSUNAMI INFORMATION STATEMENT FOR ALASKA, BRITISH
COLUMBIA, WASHINGTON, OREGON AND CALIFORNIA...

EVALUATION
----------
* There is no tsunami danger for the U.S. West Coast, British
Columbia, or Alaska.

* Based on earthquake information and historic tsunami records,
the earthquake is not expected to generate a tsunami.

* An earthquake has occurred with parameters listed below.


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

* The following parameters are based on a rapid preliminary
assessment of the earthquake and changes may occur.

* Magnitude 7.7
* Origin Time 0149 AKST Nov 11 2022
0249 PST Nov 11 2022
1049 UTC Nov 11 2022
* Coordinates 19.3 South 172.0 West
* Depth 21 miles
* Location in the Tonga Islands region


ADDITIONAL INFORMATION AND NEXT UPDATE
--------------------------------------
* Refer to the internet site tsunami.gov for more information.

* Pacific coastal regions outside California, Oregon, Washington,
British Columbia, and Alaska should refer to the Pacific Tsunami
Warning Center messages at tsunami.gov.

* This will be the final U.S. National Tsunami Warning Center
message issued for this event unless additional information
becomes available.

$$

>

2022-11-11 11:06 message from NTWC link

Key information extracted from original GTS message :
Evaluation

  • There is no TSUNAMI danger for the u s west coast BRITISH columbia or alaska
  • Based on earthquake information and historic TSUNAMI records the earthquake is not expected to generate a tsunami
  • An earthquake has occurred with parameters listed below
  • Preliminary earthquake parameters
  • The following parameters are based on a rapid preliminary assessment of the earthquake and changes MAY occur
  • Magnitude 7.5
  • Origin time 0149 akst nov 11.2022 0249 pst nov 11 2022 1049 UTC nov 11
  • Coordinates 19.3 SOUTH 172 0 west
  • Depth 21 miles
  • Location in the TONGA ISLANDS region additional information and next update
  • Refer to the internet site tsunami
  • Gov for more information
  • Pacific coastal regions outside california oregon washington BRITISH columbia and alaska should refer to the pacific TSUNAMI warning center messages at tsunami
  • Gov
  • This will be the only u s national TSUNAMI warning center message issued for this event unless additional information becomes available

Original Message :

WEAK53 PAAQ 111104
TIBAK1

Tsunami Information Statement Number 1
NWS National Tsunami Warning Center Palmer AK
304 AM PST Fri Nov 11 2022

..THIS IS A TSUNAMI INFORMATION STATEMENT FOR ALASKA, BRITISH
COLUMBIA, WASHINGTON, OREGON AND CALIFORNIA...

EVALUATION
----------
* There is no tsunami danger for the U.S. West Coast, British
Columbia, or Alaska.

* Based on earthquake information and historic tsunami records,
the earthquake is not expected to generate a tsunami.

* An earthquake has occurred with parameters listed below.


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

* The following parameters are based on a rapid preliminary
assessment of the earthquake and changes may occur.

* Magnitude 7.5
* Origin Time 0149 AKST Nov 11 2022
0249 PST Nov 11 2022
1049 UTC Nov 11 2022
* Coordinates 19.3 South 172.0 West
* Depth 21 miles
* Location in the Tonga Islands region


ADDITIONAL INFORMATION AND NEXT UPDATE
--------------------------------------
* Refer to the internet site tsunami.gov for more information.

* Pacific coastal regions outside California, Oregon, Washington,
British Columbia, and Alaska should refer to the Pacific Tsunami
Warning Center messages at tsunami.gov.

* This will be the only U.S. National Tsunami Warning Center
message issued for this event unless additional information
becomes available.

$$

>

2022-11-11 11:02 link


Original Message :

WEIO22 WIIX 111101
TSP-INATEWS-20221111-1101-001
--------------------------------------------------------------------------------
TSUNAMI BULLETIN NOTIFICATION MESSAGE NUMBER 1
IOTWMS TSUNAMI SERVICE PROVIDER INDONESIA (INATEWS-BMKG)
ISSUED AT 1101 UTC, NOV 11, 2022
--------------------------------------------------------------------------------
TO: INDIAN OCEAN NATIONAL TSUNAMI WARNING CENTRES (NTWC)
FROM: IOTWMS-TSP INDONESIA

NOTIFICATION:
IOTWMS-TSP INDONESIA HAS JUST ISSUED TSUNAMI BULLETIN NUMBER 1 FOR
THE INDIAN OCEAN, BASED ON THE FOLLOWING EARTHQUAKE EVENT:

MAGNITUDE : 7.4 MWP
DEPTH : 48KM
DATE : 11 NOV 2022
ORIGIN TIME: 10:48:49 UTC
LATITUDE : 19.28S
LONGITUDE : 172.37W
LOCATION : TONGA ISLANDS REGION

TO VIEW THE BULLETIN GO TO THE IOTWMS-TSP INDONESIA WEBSITE AT:

HTTP://RTSP.BMKG.GO.ID

NOTE: THIS IS A RESTRICTED-ACCESS WEBSITE CONTAINING TECHNICAL DATA
FOR INDIAN OCEAN NATIONAL TSUNAMI WARNING CENTRES ONLY. IT IS NOT
FOR GENERAL PUBLIC ACCESS.

GENERAL PUBLIC INFORMATION FOR THIS EVENT IS AVAILABLE FROM:

INDONESIA TSUNAMI EARLY WARNING SYSTEM (INATEWS)
THE AGENCY FOR METEOROLOGY CLIMATOLOGY AND GEOPHYSICS (BMKG)
ADDRESS: JL. ANGKASA I NO.2 KEMAYORAN, JAKARTA, INDONESIA, 10720
TEL.: 62 (21) 65867045
FAX: 62 (21) 6546316
P.O. BOX 3540 JAKARTA
WEBSITE: HTTP://RTSP.BMKG.GO.ID/PUBLICBULL.PHP
EMAIL : INARTSP@BMKG.GO.ID
MONITRTWP@BMKG.GO.ID

END OF NOTIFICATION MESSAGE
--------------------------------------------------------------

>

2022-11-11 11:02 link


Original Message :

WEIO20 DEMS 111059
---------------------------------------------------------------------
TSUNAMI BULLETIN NOTIFICATION MESSAGE NUMBER 1
IOTWMS TSUNAMI SERVICE PROVIDER INDIA (ITEWC)

ISSUED AT 1059 UTC FRIDAY 11 NOVEMBER 2022
---------------------------------------------------------------------
TO: INDIAN OCEAN NATIONAL TSUNAMI WARNING CENTRES (NTWC)
FROM: IOTWMS-TSP INDIA

NOTIFICATION:
IOTWMS-TSP INDIA HAS JUST ISSUED TSUNAMI BULLETIN NUMBER 1

FOR THE INDIAN OCEAN, BASED ON THE FOLLOWING EARTHQUAKE EVENT:

Magnitude : 7.0
Depth : 10.0
Date : 11 Nov 2022
Origin Time : 1048 UTC
Latitude : 19.24 S
Longitude : 172.28 W
Location : Tonga Islands Region


TO VIEW THE BULLETIN GO TO THE IOTWMS-TSP INDIA WEBSITE AT:
https://tsunami.incois.gov.in/TEWS/displaybulletinslatest.jsp?type=TSP&eventId=incois2022wcnj&aos=exchange&currBullNo=1&latestBullNo=1

NOTE: THIS IS A RESTRICTED-ACCESS WEBSITE CONTAINING TECHNICAL DATA
FOR INDIAN OCEAN NATIONAL TSUNAMI WARNING CENTRES ONLY. IT IS NOT
FOR GENERAL PUBLIC ACCESS.

GENERAL PUBLIC INFORMATION FOR THIS EVENT IS AVAILABLE FROM:

INDIAN TSUNAMI EARLY WARNING CENTRE (ITEWC)
INDIAN NATIONAL CENTRE FOR OCEAN INFORMATION SERVICES (INCOIS)
ADDRESS:OCEAN VALLEY, PRAGATHI NAGAR (BO), NIZAMPET (SO),
HYDERABAD - 500 090, INDIA
PHONE: 91-40-23895011
FAX: 91-40-23895012
EMAIL: tsunami@incois.gov.in
WEB: https://tsunami.incois.gov.in/TEWS/TSP

END OF NOTIFICATION MESSAGE
---------------------------------------------------------------------

>

2022-11-11 11:01 message from NTWC link

Key information extracted from original GTS message :
Evaluation

  • An earthquake with a preliminary magnitude of 7.5 occurred in the TONGA ISLANDS region at 1049 UTC on friday NOVEMBER 11 2022
  • Based on the preliminary earthquake parameters hazardous TSUNAMI waves are possible for coasts located within 300 km of the earthquake epicenter
Threat Forecast

  • Hazardous TSUNAMI waves from this earthquake are possible within 300 km of the epicenter along the coasts of NIUE and TONGA

Original Message :

WEPA40 PHEB 111100
TSUPAC

TSUNAMI MESSAGE NUMBER 1
NWS PACIFIC TSUNAMI WARNING CENTER HONOLULU HI
1100 UTC FRI NOV 11 2022

...PTWC TSUNAMI THREAT MESSAGE...


**** NOTICE **** NOTICE **** NOTICE **** NOTICE **** NOTICE *****

THIS MESSAGE IS ISSUED FOR INFORMATION ONLY IN SUPPORT OF THE
UNESCO/IOC PACIFIC TSUNAMI WARNING AND MITIGATION SYSTEM AND IS
MEANT FOR NATIONAL AUTHORITIES IN EACH COUNTRY OF THAT SYSTEM.

NATIONAL AUTHORITIES WILL DETERMINE THE APPROPRIATE LEVEL OF
ALERT FOR EACH COUNTRY AND MAY ISSUE ADDITIONAL OR MORE REFINED
INFORMATION.

**** NOTICE **** NOTICE **** NOTICE **** NOTICE **** NOTICE *****


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

* MAGNITUDE 7.5
* ORIGIN TIME 1049 UTC NOV 11 2022
* COORDINATES 19.3 SOUTH 172.0 WEST
* DEPTH 33 KM / 20 MILES
* LOCATION TONGA REGION


EVALUATION
----------

* AN EARTHQUAKE WITH A PRELIMINARY MAGNITUDE OF 7.5 OCCURRED IN
THE TONGA ISLANDS REGION AT 1049 UTC ON FRIDAY NOVEMBER 11
2022.

* BASED ON THE PRELIMINARY EARTHQUAKE PARAMETERS... HAZARDOUS
TSUNAMI WAVES ARE POSSIBLE FOR COASTS LOCATED WITHIN 300 KM
OF THE EARTHQUAKE EPICENTER.


TSUNAMI THREAT FORECAST
-----------------------

* HAZARDOUS TSUNAMI WAVES FROM THIS EARTHQUAKE ARE POSSIBLE
WITHIN 300 KM OF THE EPICENTER ALONG THE COASTS OF

NIUE AND TONGA


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.


ESTIMATED TIMES OF ARRIVAL
--------------------------

* ESTIMATED TIMES OF ARRIVAL -ETA- OF THE INITIAL TSUNAMI WAVE
FOR PLACES WITH A POTENTIAL TSUNAMI THREAT. 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)
------------------------------------------------------------
NIUE ISLAND NIUE 19.0S 170.0W 1104 11/11
HOLEVA TONGA 18.6S 173.9W 1109 11/11


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.


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

* THE NEXT MESSAGE WILL BE ISSUED IN ONE HOUR... OR SOONER IF
THE SITUATION WARRANTS.

* AUTHORITATIVE INFORMATION ABOUT THE EARTHQUAKE FROM THE U.S.
GEOLOGICAL SURVEY CAN BE FOUND ON THE INTERNET AT
EARTHQUAKE.USGS.GOV.

* FURTHER INFORMATION ABOUT THIS EVENT MAY BE FOUND AT
WWW.TSUNAMI.GOV.

* COASTAL REGIONS OF HAWAII... AMERICAN SAMOA... GUAM... AND
CNMI SHOULD REFER TO PACIFIC TSUNAMI WARNING CENTER MESSAGES
SPECIFICALLY FOR THOSE PLACES THAT CAN BE FOUND AT
WWW.TSUNAMI.GOV.

* COASTAL REGIONS OF CALIFORNIA... OREGON... WASHINGTON...
BRITISH COLUMBIA AND ALASKA SHOULD ONLY REFER TO U.S.
NATIONAL TSUNAMI WARNING CENTER MESSAGES THAT CAN BE FOUND
AT WWW.TSUNAMI.GOV.

$$

>

2022-11-11 11:01 link


Original Message :

WEIO24 AMMC 111048
---------------------------------------------------------------------
TSUNAMI BULLETIN NOTIFICATION MESSAGE NUMBER 1
IOTWMS TSUNAMI SERVICE PROVIDER AUSTRALIA [JATWC]
ISSUED AT 1100 UTC Friday 11 November 2022
---------------------------------------------------------------------
TO: INDIAN OCEAN NATIONAL TSUNAMI WARNING CENTRES [NTWCs]
FROM: IOTWMS-TSP AUSTRALIA

NOTIFICATION:
IOTWMS-TSP AUSTRALIA HAS JUST ISSUED TSUNAMI BULLETIN NUMBER 1
FOR THE INDIAN OCEAN, BASED ON THE FOLLOWING EARTHQUAKE EVENT:

MAGNITUDE: 7.2 MWP
DEPTH: 57KM
DATE: 11 NOV 2022
ORIGIN TIME: 1048 UTC
LATITUDE: 19.276S
LONGITUDE: 172.328W
LOCATION: Tonga Islands Region

TO VIEW THE BULLETIN GO TO THE IOTWMS-TSP AUSTRALIA WEBSITE AT:

http://reg.bom.gov.au/tsunami/rtsp/index.shtml

NOTE: THIS IS A RESTRICTED-ACCESS WEBSITE CONTAINING TECHNICAL DATA
FOR NATIONAL TSUNAMI WARNING CENTRES ONLY. IT IS NOT FOR GENERAL
PUBLIC ACCESS.

GENERAL PUBLIC INFORMATION FOR THIS EVENT IS AVAILABLE FROM:

JOINT AUSTRALIAN TSUNAMI WARNING CENTRE [JATWC]
BUREAU OF METEOROLOGY
MELBOURNE, AUSTRALIA
http://www.bom.gov.au/tsunami

END OF NOTIFICATION MESSAGE
---------------------------------------------------------------------

>