This Tsunami Information Statement for Bonin islands Japan region is no longer in force, and was issued by Pacific Tsunami Warning Center. It is kept here as a record of what was issued and when.

Epicentre 28.000, 139.900 · nearest coast JP

What this bulletin says

This bulletin was published without a summary. The status above and the official text are everything the centre sent.

Preliminary magnitude 7.0(Mwp). Magnitudes are revised as more data arrives.

Bulletin details

Category: Information
Bulletin Issue Time: 2026.10.25 02:27:01 UTC
Preliminary Magnitude: 7.0(Mwp)
Lat/Lon: 28. / 139.9
Affected Region: BONIN ISLANDS JAPAN REGION

Official bulletin

ZCZC
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.

$$



NNNN

View on tsunami.gov

Issued

October 25, 2026 at 02:27 UTC

Effective

October 25, 2026 at 02:27 UTC

Affected area

Bonin islands Japan region

Issued by

Pacific Tsunami Warning Center

The earthquake behind it

6.5M 6.5 - Bonin Islands, Japan region36 km from the bulletin's epicentre · Tap for the full event, aftershocks and revisions

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