Magnitude
Origin Time	: 2026-08-14 21:58:24 UTC
Location	: 8.41S - 121.39E (Flores Region, Indonesia)
Depth	: 15 Km
Bulletin	: 3 3.1 (CONFIRMED THREAT BULLETIN)

TSP-InaTEWS-20260815-0025-003
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PUBLIC TSUNAMI BULLETIN NUMBER 3 
IOTWMS TSUNAMI SERVICE PROVIDER INDONESIA (InaTEWS-BMKG)
issued at 0025 UTC, Aug 15, 2026
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... CONFIRMED TSUNAMI THREAT IN 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 (updated)
IOTWMS-TSP INDONESIA has detected an earthquake with the following details:

Magnitude  : 7.7 Mwp (REVISED)
Depth      : 15km
Date       : 14 Aug 2026
Origin Time: 21:58:24 UTC
Latitude   : 8.41S
Longitude  : 121.39E
Location   : Flores Region, Indonesia

2. EVALUATION
Sea level observations have confirmed that a TSUNAMI WAS GENERATED and
there MAY BE A THREAT TO SOME INDIAN OCEAN COUNTRIES.

Maximum wave amplitudes observed so far:

LOCATION            COUNTRIES     LAT    LON      AMPL(m) TIME(UTC) DATE
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SIKKA               INDONESIA     8.30S  121.73E   0.19   22:03     Aug 14, 2026
PEL. KEWAPANTE      INDONESIA     8.64S  122.29E   0.38   22:16     Aug 14, 2026
FLORES TIMUR        INDONESIA     8.27S  123.09E   0.25   22:24     Aug 14, 2026
LABUAN BAJO         INDONESIA     8.49S  119.87E   0.36   22:26     Aug 14, 2026
MAUROLE-ENDE        INDONESIA     8.50S  121.81E   0.94   22:27     Aug 14, 2026
DOMPU               INDONESIA     8.30S  118.38E   0.17   22:29     Aug 14, 2026
BAKALANG-ALOR       INDONESIA     8.26S  124.23E   0.14   22:41     Aug 14, 2026
BAUBAU              INDONESIA     5.45S  122.59E   0.30   22:47     Aug 14, 2026
BULUKUMBA           INDONESIA     5.54S  120.21E   0.54   22:58     Aug 14, 2026
KOLAKA              INDONESIA     4.05S  121.57E   0.23   23:27     Aug 14, 2026
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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
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

4. UPDATES
Additional bulletins will be issued by IOTWMS-TSP INDONESIA for this event as
more 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

5. 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

6. 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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