Public Bulletin in Detail« Back to the lists| Magnitude |  |
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| Origin Time | : 2025-09-25 01:00:00 UTC |
| Location | : 6.94S - 104.7E (Sunda Strait, Indonesia (Test IOWave-Sep-2025)) |
| Depth | : 10 Km |
| Bulletin | : 13 (FINAL BULLETIN) |
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TSP-InaTEWS-20250925-1100-013
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PUBLIC TSUNAMI BULLETIN NUMBER 13
IOTWMS TSUNAMI SERVICE PROVIDER INDONESIA (InaTEWS-BMKG)
issued at 1100 UTC, Sep 25, 2025
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... FINAL TSUNAMI BULLETIN FOR THE INDIAN OCEAN ...
This bulletin applies to areas within and bordering the Indian Ocean.
It is issued in support of the UNESCO/IOC Indian Ocean Tsunami
Warning and Mitigation System (IOTWMS).
1. EARTHQUAKE INFORMATION
IOTWMS-TSP INDONESIA has detected an earthquake with the following details:
Magnitude : 9.0 Mwp
Depth : 10km
Date : 25 Sep 2025
Origin Time: 01:00:00 UTC
Latitude : 6.94S
Longitude : 104.70E
Location : Sunda Strait, Indonesia
2. EVALUATION
Data from sea-level gauges confirmed that a tsunami was generated.
The expected period of significant tsunami waves is now over for all
Threatened Indian Ocean countries, based on IOTWMS-TSP INDONESIA modelling.
Because local conditions can cause a wide variation in tsunami wave
action, CANCELLATION of national warnings and ALL CLEAR determination
must be made by national/state/local authorities. The tsunami warning
status reported by National Tsunami Warning Centres (NTWCs) of
IOTWMS member states for their countries can be found at:
http://www.incois.gov.in/Incois/tsunami/NTWCFeedbackStatus.jsp
Please be aware that dangerous currents can continue for several
hours after the main tsunami waves have passed.
3. TSUNAMI WAVE OBSERVATIONS
Listed below are maximum wave amplitudes recorded at the specified
locations. Note that wave amplitude is measured relative to normal
sea level; it is NOT the crest-to-trough wave height.
LOCATION COUNTRIES LAT LON TIME(UTC) DATE AMPL(m)
------------------------------------------------------------------------------
Enggano INDONESIA 5.35S 102.28E 0100z UTC 25 Sep 2025 9.1m
Christmas Island AUSTRALIA 10.43S 105.67E 0114z UTC 25 Sep 2025 8.3m
Tanjung Lesung INDONESIA 6.48S 105.66E 0143z UTC 25 Sep 2025 9.8m
Pangandaran INDONESIA 7.75S 108.50E 0144z UTC 25 Sep 2025 7.4m
Cilacap INDONESIA 7.75S 109.00E 0149z UTC 25 Sep 2025 6.1m
Sebesi Island INDONESIA 5.94S 105.51E 0154z UTC 25 Sep 2025 10.5m
Marina Jambu INDONESIA 6.19S 105.84E 0155z UTC 25 Sep 2025 8.2m
Pangandaran INDONESIA 7.69S 108.67E 0156z UTC 25 Sep 2025 7.3m
Sadeng INDONESIA 8.19S 110.80E 0157z UTC 25 Sep 2025 4.4m
Pacitan INDONESIA 8.27S 111.37E 0206z UTC 25 Sep 2025 3.9m
Cocos Island AUSTRALIA 12.12S 96.89E 0207z UTC 25 Sep 2025 4.4m
Seblat INDONESIA 3.22S 101.60E 0210z UTC 25 Sep 2025 7.0m
Prigi INDONESIA 8.28S 111.73E 0210z UTC 25 Sep 2025 6.9m
Popoh, Tulung Agung INDONESIA 8.26S 111.80E 0212z UTC 25 Sep 2025 7.6m
Tanahbala INDONESIA 0.53S 98.50E 0221z UTC 25 Sep 2025 1.4m
Telukdalam INDONESIA 0.55N 97.82E 0228z UTC 25 Sep 2025 1.5m
Benoa INDONESIA 8.77S 115.22E 0238z UTC 25 Sep 2025 3.2m
Padang INDONESIA 0.95S 100.37E 0252z UTC 25 Sep 2025 2.5m
Bungus Port INDONESIA 1.03S 100.40E 0253z UTC 25 Sep 2025 5.7m
Lembar INDONESIA 8.73S 116.07E 0259z UTC 25 Sep 2025 1.6m
Muncar Banyuwangi INDONESIA 8.44S 114.35E 0302z UTC 25 Sep 2025 2.1m
Waikelo INDONESIA 9.39S 119.22E 0305z UTC 25 Sep 2025 1.6m
Meulaboh INDONESIA 4.13N 96.13E 0342z UTC 25 Sep 2025 0.5m
Rote INDONESIA 10.71S 123.06E 0346z UTC 25 Sep 2025 1.0m
Sabang INDONESIA 5.83N 95.33E 0349z UTC 25 Sep 2025 0.2m
PtMurat AUSTRALIA 21.82S 114.19E 0349z UTC 25 Sep 2025 4.3m
Cape Cuvier Wharf AUSTRALIA 24.22S 113.40E 0407z UTC 25 Sep 2025 1.7m
Sibolga INDONESIA 1.73N 98.80E 0414z UTC 25 Sep 2025 1.3m
Nancowry INDIA 8.05N 93.55E 0419z UTC 25 Sep 2025 0.3m
Port Blair INDIA 11.68N 92.76E 0450z UTC 25 Sep 2025 0.2m
Hambantota SRI LANKA 6.12N 81.13E 0451z UTC 25 Sep 2025 1.3m
Kirinda SRI LANKA 6.20N 81.32E 0453z UTC 25 Sep 2025 2.1m
Ko Miang THAILAND 8.55N 97.63E 0457z UTC 25 Sep 2025 0.2m
Trincomalee SRI LANKA 8.56N 81.20E 0500z UTC 25 Sep 2025 1.2m
Port Hedland AUSTRALIA 20.04S 118.42E 0505z UTC 25 Sep 2025 1.5m
Diego Garcia UK 7.29S 72.39E 0515z UTC 25 Sep 2025 1.1m
Gan MALDIVE 0.69S 73.15E 0518z UTC 25 Sep 2025 1.6m
Hillarys Harbor AUSTRALIA 31.83S 115.74E 0519z UTC 25 Sep 2025 1.4m
Colombo SRI LANKA 6.95N 79.85E 0521z UTC 25 Sep 2025 1.1m
Kolinamil, Jakarta Port INDONESIA 6.11S 106.89E 0530z UTC 25 Sep 2025 1.7m
Geraldton AUSTRALIA 28.76S 114.56E 0532z UTC 25 Sep 2025 2.0m
Male MALDIVE 4.19N 73.53E 0533z UTC 25 Sep 2025 1.1m
Ambon INDONESIA 3.68S 128.18E 0533z UTC 25 Sep 2025 0.2m
Pulau Perak MALAYSIA 5.68N 98.94E 0541z UTC 25 Sep 2025 0.1m
Ko Taphao Noi THAILAND 7.82N 98.42E 0549z UTC 25 Sep 2025 0.1m
Chennai INDIA 13.10N 80.30E 0555z UTC 25 Sep 2025 0.9m
Hanimadhoo MALDIVE 6.77N 73.17E 0557z UTC 25 Sep 2025 1.3m
Broome AUSTRALIA 18.00S 122.22E 0601z UTC 25 Sep 2025 0.6m
Minicoy INDIA 8.28N 73.05E 0605z UTC 25 Sep 2025 0.6m
Visakhapatnam INDIA 17.68N 83.28E 0622z UTC 25 Sep 2025 0.4m
Haing Gyi Kyun MYANMAR 16.00N 94.32E 0624z UTC 25 Sep 2025 0.2m
Saumlaki INDONESIA 7.98S 131.29E 0630z UTC 25 Sep 2025 0.0m
Porto Malai, Langkawi MALAYSIA 6.26N 99.73E 0644z UTC 25 Sep 2025 0.2m
Sittwe MYANMAR 20.15N 92.90E 0654z UTC 25 Sep 2025 0.2m
Saint-Paul Island FRANCE 38.71S 77.54E 0700z UTC 25 Sep 2025 4.8m
Rodrigues MAURITIUS 19.68S 63.42E 0701z UTC 25 Sep 2025 4.1m
Langkawi MALAYSIA 6.42N 99.77E 0702z UTC 25 Sep 2025 0.2m
Cochin INDIA 9.96N 76.26E 0705z UTC 25 Sep 2025 0.5m
Kerachut, Penang MALAYSIA 5.45N 100.18E 0715z UTC 25 Sep 2025 0.1m
Esperance AUSTRALIA 33.87S 121.90E 0721z UTC 25 Sep 2025 0.2m
Blue Bay MAURITIUS 20.44S 57.71E 0743z UTC 25 Sep 2025 1.6m
Pt.Louis MAURITIUS 20.16S 57.50E 0757z UTC 25 Sep 2025 1.5m
Agalega MAURITIUS 10.35S 56.59E 0802z UTC 25 Sep 2025 0.6m
Denis Island SEYCHELLES 3.80S 55.67E 0803z UTC 25 Sep 2025 0.5m
Sainte Marie (Reunion Island) FRANCE 20.89S 55.54E 0807z UTC 25 Sep 2025 1.4m
Pointe des Galets (Reunion Island) FRANCE 20.92S 55.28E 0813z UTC 25 Sep 2025 1.2m
Marmagao INDIA 15.41N 73.80E 0837z UTC 25 Sep 2025 0.4m
Portland AUSTRALIA 38.34S 141.61E 0851z UTC 25 Sep 2025 0.3m
Pt.LaRue SEYCHELLES 4.50S 55.50E 0901z UTC 25 Sep 2025 0.7m
Taomasina MADAGASKAR 18.15S 49.43E 0905z UTC 25 Sep 2025 1.3m
Ashkara OMAN 21.85N 59.57E 0926z UTC 25 Sep 2025 0.2m
Salalah OMAN 16.93N 54.01E 0933z UTC 25 Sep 2025 1.1m
Gwadar PAKISTAN 25.11N 62.34E 0942z UTC 25 Sep 2025 0.3m
Sur OMAN 22.57N 59.52E 0942z UTC 25 Sep 2025 0.2m
Qurayat OMAN 23.26N 58.92E 0944z UTC 25 Sep 2025 0.2m
Muscat OMAN 23.63N 58.57E 0949z UTC 25 Sep 2025 0.2m
Veeraval INDIA 20.90N 70.36E 0951z UTC 25 Sep 2025 0.1m
Duqm OMAN 19.66N 57.72E 0955z UTC 25 Sep 2025 0.2m
Chabahar IRAN 25.30N 60.60E 0956z UTC 25 Sep 2025 0.2m
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4. 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
IOTWMS member states. The tsunami warning status reported by NTWCs for
their countries can be found at:
http://www.incois.gov.in/Incois/tsunami/NTWCFeedbackStatus.jsp
5. UPDATES
No further bulletins will be issued by IOTWMS-TSP INDONESIA for this event
unless additional information becomes available.
Other IOTWMS-TSPs may issue additional information at:
IOTWS-TSP AUSTRALIA: http://www.bom.gov.au/tsunami/iotws/
IOTWS-TSP INDIA : http://www.incois.gov.in/Incois/tsunami/eqevents.jsp
6. CONTACT INFORMATION
IOTWMS-TSP INDONESIA:
THE AGENCY FOR METEOROLOGY CLIMATOLOGY AND GEOPHYSICS (BMKG)
InaTEWS - Indonesian Tsunami Early Warning System
Address: Jl. Angkasa I no.2 Kemayoran, Jakarta, Indonesia, 10720
Tel.: +62 (21) 4246321/6546316
Fax: +62 (21) 6546316/4246703
P.O. Box 3540 Jakarta
Website: https://www.bmkg.go.id
https://inatews.bmkg.go.id
E-Mail: inartsp@bmkg.go.id
monitrtwp@bmkg.go.id
7. TSUNAMI WARNING SYSTEMS OUTSIDE THE INDIAN OCEAN
Pacific Tsunami Warning and Mitigation System (PTWS):
----------------------------------------------------
Pacific Tsunami Warning Centre (PTWC)
http://ptwc.weather.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):
--------------------------------------------------------------
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):
-------------------------------------------
Pacific Tsunami Warning Centre (PTWC)
http://ptwc.weather.gov/
END OF BULLETIN
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