Overall Green Earthquake in Bonin Islands, Japan Region on 24 Oct 2026 02:09 UTC

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M 7 in Bonin Islands, Japan Region on 24 Oct 2026 02:09 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.

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Measurements Levels

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

25/10 03:29 WEGM42PHEB250226

25/10 03:25 WEPA42PHEB250224

2026-10-25 03:29 message from NTWC link

Key information extracted from original GTS message :

Evaluation

An earthquake with a preliminary magnitude of 7.0 occurred in the bonin ISLANDS JAPAN region at 1209 pm chst on saturday OCTOBER 24 2026
Based on all available data there is no TSUNAMI threat to guam rota tinian or saipan from this earthquake

Original Message :

WEGM42 PHEB 250226
TIBGUM

GUZ001-MPZ001>003-250426-

TSUNAMI INFORMATION STATEMENT NUMBER 1
NWS PACIFIC TSUNAMI WARNING CENTER HONOLULU HI
1226 PM CHST SUN OCT 25 2026

...NO TSUNAMI THREAT TO GUAM/CNMI FROM A DISTANT EARTHQUAKE...

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

EVALUATION
----------

* AN EARTHQUAKE WITH A PRELIMINARY MAGNITUDE OF 7.0 OCCURRED IN
THE BONIN ISLANDS, JAPAN REGION AT 1209 PM CHST ON SATURDAY
OCTOBER 24 2026.

* BASED ON ALL AVAILABLE DATA... THERE IS NO TSUNAMI THREAT TO
GUAM... ROTA... TINIAN OR SAIPAN FROM THIS EARTHQUAKE.

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

* NO ACTION IS REQUIRED.

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

* NO TSUNAMI IMPACTS ARE EXPECTED.

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

* MAGNITUDE 7.0
* ORIGIN TIME 1209 PM CHST OCT 24 2026
* COORDINATES 28.0 NORTH 139.9 EAST
* DEPTH 294 MILES
* LOCATION BONIN ISLANDS JAPAN REGION

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.

$$

2026-10-25 03:25 message from NTWC link

Key information extracted from original GTS message :

Evaluation

An earthquake with a preliminary magnitude of 7.0 occurred in the bonin ISLANDS JAPAN region at 0209 UTC on saturday OCTOBER 24 2026
Based on all available data there is no TSUNAMI threat from this earthquake

Original Message :

WEPA42 PHEB 250224
TIBPAC

TSUNAMI INFORMATION STATEMENT NUMBER 1
NWS PACIFIC TSUNAMI WARNING CENTER HONOLULU HI
0224 UTC SUN OCT 25 2026

...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 7.0
* ORIGIN TIME 0209 UTC OCT 24 2026
* COORDINATES 28.0 NORTH 139.9 EAST
* DEPTH 473 KM / 294 MILES
* LOCATION BONIN ISLANDS JAPAN REGION

EVALUATION
----------

* AN EARTHQUAKE WITH A PRELIMINARY MAGNITUDE OF 7.0 OCCURRED IN
THE BONIN ISLANDS, JAPAN REGION AT 0209 UTC ON SATURDAY
OCTOBER 24 2026.

* 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.

$$

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