M 7.1 in Japan on 08 Aug 2024 07:42 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.



2024-08-08 13:00 message from JMA link


Original Message :

WEPA40 RJTD 081300
TSUNAMI BULLETIN ISSUED BY JMA AT 1300Z 8 AUG

ORIGIN TIME 0742Z 8 AUG
PRELIMINARY EPICENTER LAT 31.7 N. LON 131.7 E.
E OFF KYUSHU
FOCAL DEPTH 30 KM MAG 7.1

ALL TSUNAMI WARNINGS WERE LIFTED AT 1300Z 8 AUG
NO FURTHER ACTION WILL BE TAKEN=

2024-08-08 11:18 message from NTWC link

Key information extracted from original GTS message :
Evaluation

  • An earthquake with a preliminary magnitude of 7.1 occurred in kyushu JAPAN at 0742 UTC on thursday AUGUST 8 2024
  • Japan issued a TSUNAMI advisory for some coasts that remains in effect
  • However there is no threat to any other coasts

Original Message :

WEPA40 PHEB 081118
TSUPAC

TSUNAMI MESSAGE NUMBER 3
NWS PACIFIC TSUNAMI WARNING CENTER HONOLULU HI
1107 UTC THU AUG 8 2024

...PTWC FINAL TSUNAMI SUPPLEMENT 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 7.1
* ORIGIN TIME 0742 UTC AUG 8 2024
* COORDINATES 31.8 NORTH 131.7 EAST
* DEPTH 33 KM / 20 MILES
* LOCATION KYUSHU JAPAN


EVALUATION
----------

* AN EARTHQUAKE WITH A PRELIMINARY MAGNITUDE OF 7.1 OCCURRED IN
KYUSHU, JAPAN AT 0742 UTC ON THURSDAY AUGUST 8 2024.

* JAPAN ISSUED A TSUNAMI ADVISORY FOR SOME COASTS THAT REMAINS IN
EFFECT. HOWEVER... THERE IS NO THREAT TO ANY OTHER COASTS.


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

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


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.

$$

2024-08-08 10:00 message from JMA link


Original Message :

WEPA40 RJTD 081000
TSUNAMI BULLETIN ISSUED BY JMA AT 1000Z 8 AUG

ORIGIN TIME 0742Z 8 AUG
PRELIMINARY EPICENTER LAT 31.8 N. LON 131.7 E.
E OFF KYUSHU
FOCAL DEPTH 30 KM MAG 7.1

TSUNAMI ADVISORIES ARE IN EFFECT
FOR THE FOLLOWING COASTAL AREAS OF JAPAN:
PACIFIC COASTS OF WEST JAPAN
=

2024-08-08 09:28 message from JMA link

Key information extracted from original GTS message :
Evaluation

  • There is a very small possibility of a destructive local TSUNAMI estimation at forecast points - no TSUNAMI waves with an amplitude of 0.3 meters or more are expected at any forecast point
  • However in some coastal areas (particularly near the epicenter) higher TSUNAMI waves than estimated MAY arrive
  • Authorities should be aware of this possibility

Original Message :

WEPA40 RJTD 080928
TSUNAMI BULLETIN NUMBER 003
ISSUED BY NWPTAC(JMA)
ISSUED AT 0928Z 08 AUG 2024
PART 01 OF 01 PARTS

HYPOCENTRAL PARAMETERS (REVISION)
ORIGIN TIME:0742Z 08 AUG 2024
PRELIMINARY EPICENTER:LAT31.8NORTH LON131.7EAST
KYUSHU, JAPAN
SOUTHWESTERN JAPAN AND RYUKYU ISLANDS
MAG:7.0 (MW)

EVALUATION
THERE IS A VERY SMALL POSSIBILITY OF A DESTRUCTIVE LOCAL TSUNAMI

ESTIMATION AT FORECAST POINTS - NO TSUNAMI WAVES WITH AN AMPLITUDE
OF 0.3 METERS OR MORE ARE EXPECTED AT ANY FORECAST POINT.

HOWEVER, IN SOME COASTAL AREAS (PARTICULARLY NEAR THE EPICENTER),
HIGHER TSUNAMI WAVES THAN ESTIMATED MAY ARRIVE.
AUTHORITIES SHOULD BE AWARE OF THIS POSSIBILITY.

MEASUREMENTS OR REPORTS OF TSUNAMI (REVISION)
LOCATION COORDINATES ARRIVAL TIME AMPL
TOSASHIMIZU 32.8N 133.0E
MAXIMUM TSUNAMI WAVE 0846Z 08 AUG 0.3M

MAXIMUM TSUNAMI WAVE - HALF THE AMPLITUDE FROM THE TROUGH
TO THE CREST

THIS WILL BE THE FINAL BULLETIN UNLESS CHANGES IN THE POTENTIAL
FOR TSUNAMI GENERATION ARE DEEMED POSSIBLE BASED ON EARTHQUAKE
RE-EVALUATION OR REPORTS INDICATING TSUNAMI OBSERVATION ARE
RECEIVED.

=

2024-08-08 09:09 message from NTWC link

Key information extracted from original GTS message :
Evaluation

  • An earthquake with a preliminary magnitude of 7.1 occurred in kyushu JAPAN at 0742 UTC on thursday AUGUST 8 2024
  • Based on the preliminary earthquake parameters hazardous TSUNAMI waves are possible for coasts located within 300 km of the earthquake epicenter
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)
Tosashimizu Shikok32.813308: 310.2626
Dart 2142028.913508: 32018
Aburatsu Jp31.6131.408: 110.4322


Original Message :

WEPA40 PHEB 080908
TSUPAC

TSUNAMI MESSAGE NUMBER 2
NWS PACIFIC TSUNAMI WARNING CENTER HONOLULU HI
0906 UTC THU AUG 8 2024

...PTWC TSUNAMI INOFRMATION STATEMENT SUPPLEMENT


**** 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 *****

NOTE UPDATED MAGNITUDE.


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

* MAGNITUDE 7.1
* ORIGIN TIME 0742 UTC AUG 8 2024
* COORDINATES 31.8 NORTH 131.7 EAST
* DEPTH 33 KM / 20 MILES
* LOCATION KYUSHU JAPAN


EVALUATION
----------

* AN EARTHQUAKE WITH A PRELIMINARY MAGNITUDE OF 7.1 OCCURRED IN
KYUSHU, JAPAN AT 0742 UTC ON THURSDAY AUGUST 8 2024.

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


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

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

JAPAN.


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)
------------------------------------------------------------
NOBEOKA JAPAN 32.5N 131.8E 0808 08/08
SHIMIZU JAPAN 32.8N 133.0E 0825 08/08
NAGASAKI JAPAN 32.7N 129.7E 0956 08/08

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)
-------------------------------------------------------------
TOSASHIMIZU SHIKOKU 32.8N 133.0E 0831 0.26M/ 0.8FT 26
DART 21420 28.9N 135.0E 0832 0.00M/ 0.0FT 18
ABURATSU JP 31.6N 131.4E 0811 0.43M/ 1.4FT 22


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

* THIS WILL BE THE FINAL MESSAGE UNLESS ADDITIONAL DATA ARE
RECEIVED.

* 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.

$$

2024-08-08 08:45 message from JMA link

Key information extracted from original GTS message :
Evaluation

  • There is a possibility of a destructive local TSUNAMI near the epicenter estimation at forecast points - no TSUNAMI waves with an amplitude of 0.3 meters or more are expected at any forecast point
  • However in some coastal areas (particularly near the epicenter) higher TSUNAMI waves than estimated MAY arrive
  • Authorities should be aware of this possibility

Original Message :

WEPA40 RJTD 080845
TSUNAMI BULLETIN NUMBER 002
ISSUED BY NWPTAC(JMA)
ISSUED AT 0845Z 08 AUG 2024
PART 01 OF 01 PARTS

HYPOCENTRAL PARAMETERS (REVISION)
ORIGIN TIME:0742Z 08 AUG 2024
PRELIMINARY EPICENTER:LAT31.8NORTH LON131.7EAST
KYUSHU, JAPAN
SOUTHWESTERN JAPAN AND RYUKYU ISLANDS
MAG:7.0 (MW)

EVALUATION
THERE IS A POSSIBILITY OF A DESTRUCTIVE LOCAL TSUNAMI
NEAR THE EPICENTER

ESTIMATION AT FORECAST POINTS - NO TSUNAMI WAVES WITH AN AMPLITUDE
OF 0.3 METERS OR MORE ARE EXPECTED AT ANY FORECAST POINT.

HOWEVER, IN SOME COASTAL AREAS (PARTICULARLY NEAR THE EPICENTER),
HIGHER TSUNAMI WAVES THAN ESTIMATED MAY ARRIVE.
AUTHORITIES SHOULD BE AWARE OF THIS POSSIBILITY.

MEASUREMENTS OR REPORTS OF TSUNAMI
LOCATION COORDINATES ARRIVAL TIME AMPL
TOSASHIMIZU 32.8N 133.0E
MAXIMUM TSUNAMI WAVE 0822Z 08 AUG 0.2M

MAXIMUM TSUNAMI WAVE - HALF THE AMPLITUDE FROM THE TROUGH
TO THE CREST

THIS WILL BE THE FINAL BULLETIN UNLESS CHANGES IN THE POTENTIAL
FOR TSUNAMI GENERATION ARE DEEMED POSSIBLE BASED ON EARTHQUAKE
RE-EVALUATION OR REPORTS INDICATING TSUNAMI OBSERVATION ARE
RECEIVED.

=

2024-08-08 07:57 link


Original Message :

WEIO20 DEMS 080754
---------------------------------------------------------------------
TSUNAMI BULLETIN NOTIFICATION MESSAGE NUMBER 1
IOTWMS TSUNAMI SERVICE PROVIDER INDIA (ITEWC)
ISSUED AT 0754 UTC THURSDAY 08 AUGUST 2024
---------------------------------------------------------------------
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 : 08 Aug 2024
Origin Time : 0742 UTC
Latitude : 31.81 N
Longitude : 131.63 E
Location : Kyushu, Japan
TO VIEW THE BULLETIN GO TO THE IOTWMS-TSP INDIA WEBSITE AT:
https://tsunami.incois.gov.in/TEWS/displaybulletinslatest.jsp?type=TSP&eventId=incois2024pmny&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
---------------------------------------------------------------------

2024-08-08 07:56 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 6.9
  • Origin time 2342 akdt aug 07.2024 0042 pdt aug 08 2024 0742 UTC aug 08
  • Coordinates 31.8 north 131 7 east
  • Depth 21 miles
  • Location in kyushu JAPAN 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 080755
TIBAK1

Tsunami Information Statement Number 1
NWS National Tsunami Warning Center Palmer AK
1255 AM PDT Thu Aug 8 2024

...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 6.9
* Origin Time 2342 AKDT Aug 07 2024
0042 PDT Aug 08 2024
0742 UTC Aug 08 2024
* Coordinates 31.8 North 131.7 East
* Depth 21 miles
* Location in Kyushu, Japan


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.

$$

2024-08-08 07:55 message from NTWC link

Key information extracted from original GTS message :
Evaluation

  • An earthquake with a preliminary magnitude of 6.9 occurred in kyushu JAPAN at 0742 UTC on thursday AUGUST 8 2024
  • Based on all available data there is no TSUNAMI threat from this earthquake

Original Message :

WEPA42 PHEB 080754
TIBPAC

TSUNAMI INFORMATION STATEMENT NUMBER 1
NWS PACIFIC TSUNAMI WARNING CENTER HONOLULU HI
0754 UTC THU AUG 8 2024

...PTWC TSUNAMI INFORMATION STATEMENT...


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

THIS STATEMENT 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 - FROM JMA
--------------------------------------------

* MAGNITUDE 6.9
* ORIGIN TIME 0742 UTC AUG 8 2024
* COORDINATES 31.8 NORTH 131.7 EAST
* DEPTH 33 KM / 20 MILES
* LOCATION KYUSHU JAPAN


EVALUATION
----------

* AN EARTHQUAKE WITH A PRELIMINARY MAGNITUDE OF 6.9 OCCURRED IN
KYUSHU, JAPAN AT 0742 UTC ON THURSDAY AUGUST 8 2024.

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


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

* NO ACTION IS REQUIRED.


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

* THIS WILL BE THE ONLY STATEMENT ISSUED FOR THIS EVENT UNLESS
ADDITIONAL DATA ARE 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.

$$

2024-08-08 07:53 link


Original Message :

WEIO24 AMMC 080742
---------------------------------------------------------------------
TSUNAMI BULLETIN NOTIFICATION MESSAGE NUMBER 1
IOTWMS TSUNAMI SERVICE PROVIDER AUSTRALIA [JATWC]
ISSUED AT 0752 UTC Thursday 08 August 2024
---------------------------------------------------------------------
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: 7.1 MWP
DEPTH: 39KM
DATE: 08 AUG 2024
ORIGIN TIME: 0742 UTC
LATITUDE: 31.821N
LONGITUDE: 131.539E
LOCATION: Kyushu, Japan

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
---------------------------------------------------------------------

2024-08-08 07:52 message from JMA link


Original Message :

WEPA40 RJTD 080752
TSUNAMI BULLETIN ISSUED BY JMA AT 0752Z 8 AUG

ORIGIN TIME 0742Z 8 AUG
PRELIMINARY EPICENTER LAT 31.8 N. LON 131.7 E.
E OFF KYUSHU
FOCAL DEPTH 30 KM MAG 7.1

TSUNAMI ADVISORIES ARE IN EFFECT
FOR THE FOLLOWING COASTAL AREAS OF JAPAN:
PACIFIC COASTS OF WEST JAPAN
NANSEI-SHOTO ISLANDS
=

2024-08-08 07:48 message from JMA link

Key information extracted from original GTS message :
Evaluation

  • There is a very small possibility of a destructive local TSUNAMI estimation at forecast points - no TSUNAMI waves with an amplitude of 0.3 meters or more are expected at any forecast point
  • However in some coastal areas (particularly near the epicenter) higher TSUNAMI waves than estimated MAY arrive
  • Authorities should be aware of this possibility
  • This will be the final bulletin unless changes in the potential for TSUNAMI generation are deemed possible based on earthquake re-evaluation or reports indicating TSUNAMI observation are received

Original Message :

WEPA40 RJTD 080748
TSUNAMI BULLETIN NUMBER 001
ISSUED BY NWPTAC(JMA)
ISSUED AT 0748Z 08 AUG 2024
PART 01 OF 01 PARTS

HYPOCENTRAL PARAMETERS
ORIGIN TIME:0742Z 08 AUG 2024
PRELIMINARY EPICENTER:LAT31.8NORTH LON131.7EAST
KYUSHU, JAPAN
SOUTHWESTERN JAPAN AND RYUKYU ISLANDS
MAG:6.9 (MJMA)

EVALUATION
THERE IS A VERY SMALL POSSIBILITY OF A DESTRUCTIVE LOCAL TSUNAMI

ESTIMATION AT FORECAST POINTS - NO TSUNAMI WAVES WITH AN AMPLITUDE
OF 0.3 METERS OR MORE ARE EXPECTED AT ANY FORECAST POINT.

HOWEVER, IN SOME COASTAL AREAS (PARTICULARLY NEAR THE EPICENTER),
HIGHER TSUNAMI WAVES THAN ESTIMATED MAY ARRIVE.
AUTHORITIES SHOULD BE AWARE OF THIS POSSIBILITY.

THIS WILL BE THE FINAL BULLETIN UNLESS CHANGES IN THE POTENTIAL
FOR TSUNAMI GENERATION ARE DEEMED POSSIBLE BASED ON EARTHQUAKE
RE-EVALUATION OR REPORTS INDICATING TSUNAMI OBSERVATION ARE
RECEIVED.

=

2024-08-08 07:44 message from JMA link


Original Message :

WEPA40 RJTD 080744
TSUNAMI BULLETIN ISSUED BY JMA AT 0744Z 8 AUG

ORIGIN TIME 0742Z 8 AUG
PRELIMINARY EPICENTER LAT 31.8 N. LON 131.7 E.
E OFF KYUSHU
FOCAL DEPTH 30 KM MAG 6.9

TSUNAMI ADVISORIES ARE IN EFFECT
FOR THE FOLLOWING COASTAL AREAS OF JAPAN:
PACIFIC COASTS OF WEST JAPAN
=