WEIO21 DEMS 270521
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PUBLIC TSUNAMI BULLETIN NUMBER 2
IOTWMS TSUNAMI SERVICE PROVIDER INDIA (ITEWC)
issued at 0521 UTC Thursday 27 November 2025
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... POTENTIAL 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 a POTENTIAL TSUNAMI THREAT
to countries in the Indian Ocean.
IOTWMS-TSP INDIA will monitor sea level gauges and report if any tsunami
wave activity has occurred.
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:
http://www.incois.gov.in/Incois/tsunami/NTWCFeedbackStatus.jsp
4. UPDATES
Additional bulletins will be issued by IOTWMS-TSP INDIA for this event as
more information becomes available.
Other IOTWMS-TSPs may issue additional information at:
IOTWMS-TSP AUSTRALIA:
http://www.bom.gov.au/tsunami/iotws/
IOTWMS-TSP INDONESIA:
http://rtsp.bmkg.go.id
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):
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Pacific Tsunami Warning Centre (PTWC)
https://www.tsunami.gov/
North West Pacific Tsunami Advisory Centre (NWPTAC)
http://www.jma.go.jp/en/tsunami/
US National Tsunami Warning Centre (US NTWC)
http://wcatwc.arh.noaa.gov/
Joint Australian Tsunami Warning Centre (JATWC)
http://www.bom.gov.au/tsunami/
Northeast Atlantic, Mediterranean and Connected Seas (NEAMTWS):
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French National Tsunami Warning Centre (CENALT)
http://www.info-tsunami.fr
Institute of Geodynamics, National Observatory of Athens
http://www.gein.noa.gr/en/
Kandilli Observatory and Earthquake Research Institute, Turkey
http://www.koeri.boun.edu.tr/2/en/
Caribbean and Adjacent Regions (CARIBE EWS):
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Pacific Tsunami Warning Centre (PTWC)
https://www.tsunami.gov/
END OF BULLETIN
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