Overall Green Earthquake in Central Mid-Atlantic Ridge on 17 Jun 2026 18:56 UTC

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M 6.6 in Central Mid-Atlantic Ridge on 17 Jun 2026 18:56 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)

17/06 19:21 WENT42LPMG171919

17/06 19:11 WEXX32PAAQ171909

17/06 19:10 WENT42LFPW171908

17/06 19:08 WECA43PHEB171906

17/06 19:07 WEIO24AMMC171906

2026-06-17 19:21 message from IPMA link

Original Message :

WENT42 LPMG 171919
TSUNAMI MESSAGE NUMBER 001
NEAM IPMA TSUNAMI SERVICE PROVIDER
ISSUED AT 1919Z 17 JUN 2026

... TSUNAMI INFORMATION ...
THIS INFORMATION APPLIES TO BELGIUM ... CAPE VERDE ... DENMARK ... FRANCE ... GERMANY ... ICELAND ... IRELAND ... MAURITANIA ... MOROCCO ... NETHERLANDS ... NORWAY ... PORTUGAL ... SPAIN ... SWEDEN ... UNITED KINGDOM ... RUSSIAN FEDERATION ... POLAND ... LITHUANIA ... ESTONIA ... FINLAND ... ALGERIA ... ALBANIA ... BULGARIA ... CROATIA ... CYPRUS ... EGYPT ... GEORGIA ... GREECE ... ISRAEL ... ITALY ... LEBANON ... LIBYA ... MALTA ... MONACO ... ROMANIA ... SLOVENIA ... SWEDEN ... SYRIA ... TUNISIA ... TURKEY ... UKRAINE ... UNESCO ... ERCC

THIS MESSAGE IS ISSUED AS ADVICE TO GOVERNMENT AGENCIES. ONLY
NATIONAL AND LOCAL GOVERNMENT AGENCIES HAVE THE AUTHORITY TO MAKE
DECISIONS REGARDING THE OFFICIAL STATE OF ALERT IN THEIR AREA AND ANY
ACTIONS TO BE TAKEN IN RESPONSE

AN EARTHQUAKE HAS OCCURRED WITH THESE PRELIMINARY PARAMETERS
ORIGIN TIME - 1856Z 17 JUN 2026
COORDINATES - 0.50 SOUTH 19.90 WEST
DEPTH - 10 KM
LOCATION - Central Mid-Atlantic Ridge
MAGNITUDE - 6.2

EVALUATION OF TSUNAMI INFORMATION
BASED ON HISTORICAL EARTHQUAKE AND TSUNAMI MODELLING THERE IS NO
THREAT THAT A TSUNAMI HAS BEEN GENERATED THAT CAN CAUSE DAMAGE OR
MAJOR EFFECT IN THE REGION. THIS MESSAGE IS FOR INFORMATION ONLY.

THIS WILL BE THE FINAL MESSAGE ISSUED FOR THIS EVENT UNLESS ADDITIONAL
INFORMATION BECOMES AVAILABLE.

END OF TSUNAMI MESSAGE NUMBER 001

2026-06-17 19:11 message from NTWC link

Key information extracted from original GTS message :

Evaluation

There is no TSUNAMI danger for the u s east coast the gulf of america STATES or the eastern coast of canada
Based on the earthquake location near the mid-atlantic ridge a damaging TSUNAMI is not expected
An earthquake has occurred with parameters listed below

Original Message :

WEXX32 PAAQ 171909
TIBATE

Tsunami Information Statement Number 1
NWS National Tsunami Warning Center Palmer AK
309 PM EDT Wed Jun 17 2026

...THIS IS A TSUNAMI INFORMATION STATEMENT FOR THE U.S. EAST COAST,
GULF OF AMERICA STATES, AND EASTERN CANADA...

EVALUATION
----------
* There is no tsunami danger for the U.S. east coast, the Gulf of
America states, or the eastern coast of Canada.

* Based on the earthquake location near the Mid-Atlantic Ridge,
a damaging tsunami is not expected.

* 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 1457 EDT Jun 17 2026
1357 CDT Jun 17 2026
0257 AST Jun 17 2026
1857 UTC Jun 17 2026
* Coordinates 0.4 South 20.0 West
* Depth 6 miles
* Location near the central Mid-Atlantic Ridge

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

* Caribbean coastal regions 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.

$$

2026-06-17 19:10 message from CENALT link

Key information extracted from original GTS message :

Evaluation Information

Based on historical earthquake and TSUNAMI modelling there is no threat that a TSUNAMI has been generated that can cause damage or major effect in the region
This message is for information only

Original Message :

WENT42 LFPW 171908
TSUNAMI MESSAGE NUMBER 001
NEAM CENALT TSUNAMI SERVICE PROVIDER
ISSUED AT 1908Z 17 JUN 2026

... TSUNAMI INFORMATION ...
THIS ALERT APPLIES TO ALBANIA ... ALGERIA ... BULGARIA ... CROATIA ... CYPRUS ... EGYPT ... ESTONIA ... FINLAND ... GEORGIA ... GREECE ... ISRAEL ... ITALY ... LEBANON ... LIBYA ... MALTA ... MONACO ... MONTENEGRO ... POLAND ... ROMANIA ... RUSSIAN FEDERATION ... SLOVENIA ... SYRIA ... TUNISIA ... TURKEY ... UKRAINE ... BELGIUM ... CAPE VERDE ... DENMARK ... FRANCE ... GERMANY ... ICELAND ... IRELAND ... MAURITANIA ... MOROCCO ... NETHERLANDS ... NORWAY ... PORTUGAL ... SENEGAL ... SPAIN ... SWEDEN ... UNITED KINGDOM

THIS MESSAGE IS ISSUED AS ADVICE TO GOVERNMENT AGENCIES. ONLY NATIONAL AND LOCAL GOVERNMENT AGENCIES HAVE THE AUTHORITY TO MAKE DECISIONS REGARDING THE OFFICIAL STATE OF ALERT IN THEIR AREA AND ANY ACTIONS TO BE TAKEN IN RESPONSE.

AN EARTHQUAKE HAS OCCURRED WITH THESE PRELIMINARY PARAMETERS
ORIGIN TIME - 1856Z 17 JUN 2026
COORDINATES - 0.58 SOUTH 20.09 WEST
DEPTH - 5 KM
LOCATION - CENTRAL MID ATLANTIC RIDGE
MAGNITUDE - 6.4

EVALUATION OF TSUNAMI INFORMATION
BASED ON HISTORICAL EARTHQUAKE AND TSUNAMI MODELLING THERE IS NO
THREAT THAT A TSUNAMI HAS BEEN GENERATED THAT CAN CAUSE DAMAGE OR
MAJOR EFFECT IN THE REGION.THIS MESSAGE IS FOR INFORMATION ONLY.

SUPPLEMENT MESSAGES WILL BE ISSUED AS SOON AS NEW DATA AND EVALUATION ALLOWS.
THE TSUNAMI ALERT WILL REMAIN IN EFFECT UNTIL AN END OF ALERT IS BROADCAST.

THIS WILL BE THE FINAL MESSAGE ISSUED FOR THIS EVENT UNLESS ADDITIONAL INFORMATION BECOMES
AVAILABLE.

2026-06-17 19:08 message from NTWC link

Key information extracted from original GTS message :

Evaluation

An earthquake with a preliminary magnitude of 6.7 occurred near the central mid-atlantic ridge at 1857 UTC on wednesday JUNE 17 2026
Based on all available data there is no TSUNAMI threat to caribbean coasts from this earthquake

Original Message :

WECA43 PHEB 171906
TIBCAX

TSUNAMI INFORMATION STATEMENT NUMBER 1
NWS PACIFIC TSUNAMI WARNING CENTER HONOLULU HI
1906 UTC WED JUN 17 2026

...TSUNAMI INFORMATION STATEMENT...

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

THIS STATEMENT IS ISSUED FOR INFORMATION ONLY IN SUPPORT OF THE
UNESCO/IOC TSUNAMI AND OTHER COASTAL HAZARDS WARNING SYSTEM FOR
THE CARIBBEAN AND ADJACENT REGIONS 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 6.7
* ORIGIN TIME 1857 UTC JUN 17 2026
* COORDINATES 0.4 SOUTH 20.0 WEST
* DEPTH 10 KM / 6 MILES
* LOCATION CENTRAL MID-ATLANTIC RIDGE

EVALUATION
----------

* AN EARTHQUAKE WITH A PRELIMINARY MAGNITUDE OF 6.7 OCCURRED
NEAR THE CENTRAL MID-ATLANTIC RIDGE AT 1857 UTC ON WEDNESDAY
JUNE 17 2026.

* BASED ON ALL AVAILABLE DATA... THERE IS NO TSUNAMI THREAT TO
CARIBBEAN COASTS 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 THE US GULF COAST... US EAST COAST... AND
THE MARITIME PROVINCES OF CANADA SHOULD REFER TO U.S.
NATIONAL TSUNAMI WARNING CENTER MESSAGES THAT CAN BE FOUND
AT WWW.TSUNAMI.GOV.

$$

2026-06-17 19:07 link

Original Message :

WEIO24 AMMC 171906
---------------------------------------------------------------------
TSUNAMI BULLETIN NOTIFICATION MESSAGE NUMBER 1
IOTWMS TSUNAMI SERVICE PROVIDER AUSTRALIA [JATWC]
ISSUED AT 1906 UTC WEDNESDAY 17 JUNE 2026
---------------------------------------------------------------------
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: 6.5 Mwp
DEPTH: 10 km
DATE: 17 Jun 2026
ORIGIN TIME: 1856 UTC
LATITUDE: 0.49S
LONGITUDE: 19.99W
LOCATION: Central Mid-Atlantic Ridge

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

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