tsunami-ioc
Date: Thu, 27 Nov 2025 05:48:11 +0000
Subject: [Tsunami Message - IOC] IOTWMS TSP-INDIA PUBLIC bulletin for 6.5 Earthquake at Off West Coast of Northern Sumatra
WEIO21 DEMS 270547
--------------------------------------------------------------------------------
PUBLIC TSUNAMI BULLETIN NUMBER 3
IOTWMS TSUNAMI SERVICE PROVIDER INDIA (ITEWC)
issued at 0547 UTC Thursday 27 November 2025
--------------------------------------------------------------------------------
... NO TSUNAMI THREAT IN THE INDIAN OCEAN ...
This bulletin applies to areas within and bordering the Indian Ocean
and is issued by Tsunami Service Provider INDIA in support of the
UNESCO/IOC Indian Ocean Tsunami Warning and Mitigation System (IOTWMS).
1. EARTHQUAKE INFORMATION
IOTWMS-TSP INDIA has detected an earthquake with the following
preliminary information:
Magnitude : 6.5 M
Depth : 10 km
Date : 27 Nov 2025
Origin Time: 0456UTC
Latitude : 2.79 N
Longitude : 95.95 E
Location : Off West Coast of Northern Sumatra
2. EVALUATION
Based on pre-run model scenarios, there is NO THREAT to countries in
the Indian Ocean. No further bulletins will be issued unless the
situation changes.
3. ADVICE
This bulletin is being issued as advice. Only national/state/local
authorities and disaster management officers have the authority to
make decisions regarding the official threat and warning status in
their coastal areas and any action to be taken in response.
For more detailed information, please refer to the tsunami advisory
bulletins issued by the National Tsunami Warning Centres (NTWCs) of
Indian Ocean countries. The tsunami warning status reported by NTWCs
For their countries can be found at:[1]
4. UPDATES
No further bulletins will be issued by IOTWMS-TSP INDIA for this event unless
other information becomes available.
Other IOTWMS-TSPs may issue additional information at:
IOTWMS-TSP AUSTRALIA: [2]
IOTWMS-TSP INDONESIA: [3]
5. CONTACT INFORMATION
IOTWMS-TSP INDIA:
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
Tel: 91-40-23895011
Fax: 91-40-23895012
Email: tsunami@incois.gov.in
Website: www.incois.gov.in
6. TSUNAMI WARNING SYSTEMS OUTSIDE THE INDIAN OCEAN
Pacific Tsunami Warning and Mitigation System (PTWS):
----------------------------------------------------
Pacific Tsunami Warning Centre (PTWC)[4]
North West Pacific Tsunami Advisory Centre (NWPTAC)[5]
US National Tsunami Warning Centre (US NTWC)[6]
Joint Australian Tsunami Warning Centre (JATWC)[7]
Northeast Atlantic, Mediterranean and Connected Seas (NEAMTWS):
--------------------------------------------------------------
French National Tsunami Warning Centre (CENALT)[8]
Institute of Geodynamics, National Observatory of Athens[9]
Kandilli Observatory and Earthquake Research Institute, Turkey[10]
Caribbean and Adjacent Regions (CARIBE EWS):
-------------------------------------------
Pacific Tsunami Warning Centre (PTWC)[4]
END OF BULLETIN
--------------------------------------------------------------------------------
-----
Links in this document:
[1] http://www.incois.gov.in/Incois/tsunami/NTWCFeedbackStatus.jsp
[2] http://www.bom.gov.au/tsunami/iotws/
[3] http://rtsp.bmkg.go.id
[4] https://www.tsunami.gov/
[5] http://www.jma.go.jp/en/tsunami/
[6] http://wcatwc.arh.noaa.gov/
[7] http://www.bom.gov.au/tsunami/
[8] http://www.info-tsunami.fr
[9] http://www.gein.noa.gr/en/
[10] http://www.koeri.boun.edu.tr/2/en/
----- Text Attachment: ATT00001 -----
DISCLAIMER :The regional tsunami forecast information provided does not originate within IOC-UNESCO. IOC-UNESCO is transmitting this information on an unofficial basis. Tsunami Services Providers officially provide this information to the designated Tsunami Warning Focal Points / National Tsunami Warning Centres (TWFP/NTWC) of Member States. It is then, the responsibility of mandated national organisations operating within the legal framework of the sovereign nation in which they reside and serve, to provide alerts to their citizens and communities. UNESCO does not warrant, guarantee, or make any representations regarding the timeliness, currency, correctness, accuracy, reliability, or other aspect of the characteristics or use of the information. To unsubscribe from this list please visit
https://lists.unesco.org/wws/sigrequest/tsunami-information-ioc
----- End of Text Attachment -----
Subject: [Tsunami Message - IOC] IOTWMS TSP-INDIA PUBLIC bulletin for 6.5 Earthquake at Off West Coast of Northern Sumatra
WEIO21 DEMS 270547
--------------------------------------------------------------------------------
PUBLIC TSUNAMI BULLETIN NUMBER 3
IOTWMS TSUNAMI SERVICE PROVIDER INDIA (ITEWC)
issued at 0547 UTC Thursday 27 November 2025
--------------------------------------------------------------------------------
... NO TSUNAMI THREAT IN THE INDIAN OCEAN ...
This bulletin applies to areas within and bordering the Indian Ocean
and is issued by Tsunami Service Provider INDIA in support of the
UNESCO/IOC Indian Ocean Tsunami Warning and Mitigation System (IOTWMS).
1. EARTHQUAKE INFORMATION
IOTWMS-TSP INDIA has detected an earthquake with the following
preliminary information:
Magnitude : 6.5 M
Depth : 10 km
Date : 27 Nov 2025
Origin Time: 0456UTC
Latitude : 2.79 N
Longitude : 95.95 E
Location : Off West Coast of Northern Sumatra
2. EVALUATION
Based on pre-run model scenarios, there is NO THREAT to countries in
the Indian Ocean. No further bulletins will be issued unless the
situation changes.
3. ADVICE
This bulletin is being issued as advice. Only national/state/local
authorities and disaster management officers have the authority to
make decisions regarding the official threat and warning status in
their coastal areas and any action to be taken in response.
For more detailed information, please refer to the tsunami advisory
bulletins issued by the National Tsunami Warning Centres (NTWCs) of
Indian Ocean countries. The tsunami warning status reported by NTWCs
For their countries can be found at:[1]
4. UPDATES
No further bulletins will be issued by IOTWMS-TSP INDIA for this event unless
other information becomes available.
Other IOTWMS-TSPs may issue additional information at:
IOTWMS-TSP AUSTRALIA: [2]
IOTWMS-TSP INDONESIA: [3]
5. CONTACT INFORMATION
IOTWMS-TSP INDIA:
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
Tel: 91-40-23895011
Fax: 91-40-23895012
Email: tsunami@incois.gov.in
Website: www.incois.gov.in
6. TSUNAMI WARNING SYSTEMS OUTSIDE THE INDIAN OCEAN
Pacific Tsunami Warning and Mitigation System (PTWS):
----------------------------------------------------
Pacific Tsunami Warning Centre (PTWC)[4]
North West Pacific Tsunami Advisory Centre (NWPTAC)[5]
US National Tsunami Warning Centre (US NTWC)[6]
Joint Australian Tsunami Warning Centre (JATWC)[7]
Northeast Atlantic, Mediterranean and Connected Seas (NEAMTWS):
--------------------------------------------------------------
French National Tsunami Warning Centre (CENALT)[8]
Institute of Geodynamics, National Observatory of Athens[9]
Kandilli Observatory and Earthquake Research Institute, Turkey[10]
Caribbean and Adjacent Regions (CARIBE EWS):
-------------------------------------------
Pacific Tsunami Warning Centre (PTWC)[4]
END OF BULLETIN
--------------------------------------------------------------------------------
-----
Links in this document:
[1] http://www.incois.gov.in/Incois/tsunami/NTWCFeedbackStatus.jsp
[2] http://www.bom.gov.au/tsunami/iotws/
[3] http://rtsp.bmkg.go.id
[4] https://www.tsunami.gov/
[5] http://www.jma.go.jp/en/tsunami/
[6] http://wcatwc.arh.noaa.gov/
[7] http://www.bom.gov.au/tsunami/
[8] http://www.info-tsunami.fr
[9] http://www.gein.noa.gr/en/
[10] http://www.koeri.boun.edu.tr/2/en/
----- Text Attachment: ATT00001 -----
DISCLAIMER :The regional tsunami forecast information provided does not originate within IOC-UNESCO. IOC-UNESCO is transmitting this information on an unofficial basis. Tsunami Services Providers officially provide this information to the designated Tsunami Warning Focal Points / National Tsunami Warning Centres (TWFP/NTWC) of Member States. It is then, the responsibility of mandated national organisations operating within the legal framework of the sovereign nation in which they reside and serve, to provide alerts to their citizens and communities. UNESCO does not warrant, guarantee, or make any representations regarding the timeliness, currency, correctness, accuracy, reliability, or other aspect of the characteristics or use of the information. To unsubscribe from this list please visit
https://lists.unesco.org/wws/sigrequest/tsunami-information-ioc
----- End of Text Attachment -----