Overall Green Earthquake alert in Taiwan on 27 Dec 2025 15:05 UTC

GDACS is a cooperation framework between the United Nations, the European Commission and disaster managers worldwide to improve awareness, information exchange and coordination in the first phase after major sudden-onset disasters.

M 6.6 in Taiwan on 27 Dec 2025 15:05 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.

Measurements Levels

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

27/12 15:23 WEZS42PHEB271521

27/12 15:22 WEGM42PHEB271519

27/12 15:18 WEAK53PAAQ271517

27/12 15:18 WEPA40RJTD271518

27/12 15:17 WEIO22WIIX271514

27/12 15:17 WEHW42PHEB271517

27/12 15:17 WEPA42PHEB271516

27/12 15:16 WEIO24AMMC271515

27/12 15:13 WEPA40RJTD271513

2025-12-27 15:23 message from NTWC link

Key information extracted from original GTS message :

Evaluation

An earthquake with a preliminary magnitude of 6.7 occurred in the TAIWAN region at 406 am sst on saturday december 27 2025
Based on all available data there is no TSUNAMI threat to AMERICAN SAMOA from this earthquake

Original Message :

WEZS42 PHEB 271521
TIBPPG

ASZ001>004-271721-

TSUNAMI INFORMATION STATEMENT NUMBER 1
NWS PACIFIC TSUNAMI WARNING CENTER HONOLULU HI
421 AM SST SAT DEC 27 2025

...NO TSUNAMI THREAT FROM A DISTANT EARTHQUAKE...

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

EVALUATION
----------

* AN EARTHQUAKE WITH A PRELIMINARY MAGNITUDE OF 6.7 OCCURRED IN
THE TAIWAN REGION AT 406 AM SST ON SATURDAY DECEMBER 27
2025.

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

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

* NO ACTION IS REQUIRED.

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

* NO TSUNAMI IMPACTS ARE EXPECTED.

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

* MAGNITUDE 6.7
* ORIGIN TIME 406 AM SST DEC 27 2025
* COORDINATES 24.7 NORTH 122.1 EAST
* DEPTH 22 MILES
* LOCATION TAIWAN 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.

$$

2025-12-27 15:22 message from NTWC link

Key information extracted from original GTS message :

Evaluation

An earthquake with a preliminary magnitude of 6.7 occurred in the TAIWAN region at 106 am chst on sunday december 28 2025
Based on all available data there is no TSUNAMI threat to guam rota tinian or saipan from this earthquake

Original Message :

WEGM42 PHEB 271519
TIBGUM

GUZ001>004-271719-

TSUNAMI INFORMATION STATEMENT NUMBER 1
NWS PACIFIC TSUNAMI WARNING CENTER HONOLULU HI
119 AM CHST SUN DEC 28 2025

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

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

EVALUATION
----------

* AN EARTHQUAKE WITH A PRELIMINARY MAGNITUDE OF 6.7 OCCURRED IN
THE TAIWAN REGION AT 106 AM CHST ON SUNDAY DECEMBER 28 2025.

* 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 6.7
* ORIGIN TIME 106 AM CHST DEC 28 2025
* COORDINATES 24.7 NORTH 122.1 EAST
* DEPTH 22 MILES
* LOCATION TAIWAN 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.

$$

2025-12-27 15:18 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

Original Message :

WEAK53 PAAQ 271517
TIBAK1

Tsunami Information Statement Number 1
NWS National Tsunami Warning Center Palmer AK
717 AM PST Sat Dec 27 2025

...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 6.7
* Origin Time 0606 AKST Dec 27 2025
0706 PST Dec 27 2025
1506 UTC Dec 27 2025
* Coordinates 24.7 North 122.1 East
* Depth 22 miles
* Location in the Taiwan 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.

$$

2025-12-27 15:18 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 271518
TSUNAMI BULLETIN NUMBER 001
ISSUED BY NWPTAC(JMA)
ISSUED AT 1518Z 27 DEC 2025
PART 01 OF 01 PARTS

HYPOCENTRAL PARAMETERS
ORIGIN TIME:1505Z 27 DEC 2025
PRELIMINARY EPICENTER:LAT24.7NORTH LON122.1EAST
TAIWAN REGION
TAIWAN
MAG:6.7 (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.

=

2025-12-27 15:17 link

Original Message :

WEIO22 WIIX 271514
TSP-InaTEWS-20251227-1514-001
--------------------------------------------------------------------------------
TSUNAMI BULLETIN NOTIFICATION MESSAGE NUMBER 1
IOTWMS TSUNAMI SERVICE PROVIDER INDONESIA (InaTEWS-BMKG)
issued at 1514 UTC, Dec 27, 2025
--------------------------------------------------------------------------------
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 : 6.9 Mwp
Depth : 56km
Date : 27 Dec 2025
Origin Time: 15:05:56 UTC
Latitude : 24.59N
Longitude : 122.10E
Location : Taiwan 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
--------------------------------------------------------------

2025-12-27 15:17 message from NTWC link

Key information extracted from original GTS message :

Evaluation

Based on all available data a destructive pacific-wide TSUNAMI is not expected and there is no TSUNAMI threat to hawaii
Repeat
A destructive pacific-wide TSUNAMI is not expected and there is no TSUNAMI threat to hawaii
This will be the only statement issued for this event unless additional data are received

Original Message :

WEHW42 PHEB 271517
TIBHWX

HIZ001-003-006>007-009-016>018-023-026-029>035-037>050-051>054-
271717-

TSUNAMI INFORMATION STATEMENT NUMBER 1
NWS PACIFIC TSUNAMI WARNING CENTER HONOLULU HI
517 AM HST SAT DEC 27 2025

TO - EMERGENCY MANAGEMENT IN THE STATE OF HAWAII

SUBJECT - TSUNAMI INFORMATION STATEMENT

THIS STATEMENT IS FOR INFORMATION ONLY. NO ACTION REQUIRED.

AN EARTHQUAKE HAS OCCURRED WITH THESE PRELIMINARY PARAMETERS

ORIGIN TIME - 0506 AM HST 27 DEC 2025
COORDINATES - 24.7 NORTH 122.1 EAST
LOCATION - TAIWAN REGION
MAGNITUDE - 6.7 MOMENT

EVALUATION

BASED ON ALL AVAILABLE DATA A DESTRUCTIVE PACIFIC-WIDE TSUNAMI IS
NOT EXPECTED AND THERE IS NO TSUNAMI THREAT TO HAWAII. REPEAT. A
DESTRUCTIVE PACIFIC-WIDE TSUNAMI IS NOT EXPECTED AND THERE IS NO
TSUNAMI THREAT TO HAWAII.

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

$$

2025-12-27 15:17 message from NTWC link

Key information extracted from original GTS message :

Evaluation

An earthquake with a preliminary magnitude of 6.7 occurred in the TAIWAN region at 1506 UTC on saturday december 27 2025
Based on all available data there is no TSUNAMI threat from this earthquake

Original Message :

WEPA42 PHEB 271516
TIBPAC

TSUNAMI INFORMATION STATEMENT NUMBER 1
NWS PACIFIC TSUNAMI WARNING CENTER HONOLULU HI
1516 UTC SAT DEC 27 2025

...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 6.7
* ORIGIN TIME 1506 UTC DEC 27 2025
* COORDINATES 24.7 NORTH 122.1 EAST
* DEPTH 35 KM / 22 MILES
* LOCATION TAIWAN REGION

EVALUATION
----------

* AN EARTHQUAKE WITH A PRELIMINARY MAGNITUDE OF 6.7 OCCURRED IN
THE TAIWAN REGION AT 1506 UTC ON SATURDAY DECEMBER 27 2025.

* 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.

$$

2025-12-27 15:16 link

Original Message :

WEIO24 AMMC 271515
---------------------------------------------------------------------
TSUNAMI BULLETIN NOTIFICATION MESSAGE NUMBER 1
IOTWMS TSUNAMI SERVICE PROVIDER AUSTRALIA [JATWC]
ISSUED AT 1515 UTC SATURDAY 27 DECEMBER 2025
---------------------------------------------------------------------
TO: INDIAN OCEAN NATIONAL TSUNAMI WARNING CENTRES [NTWC]
FROM: IOTWMS-TSP AUSTRALIA

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

MAGNITUDE: 6.7 Mw
DEPTH: 59 km
DATE: 27 Dec 2025
ORIGIN TIME: 1505 UTC
LATITUDE: 24.60N
LONGITUDE: 122.05E
LOCATION: Taiwan Region

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

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

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:

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

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

2025-12-27 15:13 message from JMA link

Original Message :

WEPA40 RJTD 271513
TSUNAMI BULLETIN ISSUED BY JMA AT 1513Z 27 DEC

ORIGIN TIME 1505Z 27 DEC
PRELIMINARY EPICENTER LAT 24.7 N. LON 122.1 E.
TAIWAN REGION
FOCAL DEPTH 35 KM MAG 6.7

NO SIGNIFICANT TSUNAMI IS EXPECTED IN COASTAL AREAS OF JAPAN
NO FURTHER ACTION WILL BE TAKEN=

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