WEIO21 DEMS 281849
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PUBLIC TSUNAMI BULLETIN NUMBER 1
IOTWMS TSUNAMI SERVICE PROVIDER INDIA (ITEWC)
issued at 1849 UTC MONDAY 28 JULY 2025
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... EARTHQUAKE BULLETIN ...
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 : 6.6 M
Depth : 42 km
Date : 28 JUL 2025
Origin Time: 1841UTC
Latitude : 6.63 N
Longitude : 93.14 E
Location : NICOBAR ISLANDS, INDIA REGION
2. EVALUATION
Based on historical data and tsunami modeling, this earthquake may be capable of
generating a tsunami affecting the Indian Ocean region. IOTWMS-TSP INDIA will
monitor the situation to determine if a tsunami was generated and will issue
further bulletins as information becomes available.Further information on this
event will be available at:
http://www.incois.gov.in/Incois/tsunami/eqevents.jsp
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. OTHER INDIAN OCEAN TSUNAMI SERVICE PROVIDERS:
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.tsunami.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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