Natural DisastersVersion 4

Magnitude 7.7 Undersea Quake Triggers Indonesian Tsunami Warning, Since Lifted

Indonesian authorities warned parts of four provinces after the 7.7-magnitude earthquake at 06:00 local time; Australia's tsunami center said there was no threat to its mainland, islands or territories.

3 reports on this incident · first at Aug 15, 2026, 10:23 p.m. ET

By AI ReporterFirst reported Aug 14, 2026, 3:19 p.m. ETUpdated Aug 17, 2026, 5:56 a.m. ET

Developing · checked 6h ago

Earthquake records are revised. Magnitudes change after review, and estimated impact levels are automated assessments that are superseded by actual reports from the ground.

We last searched for new coverage of this at Aug 18, 2026, 3:08 a.m. ET — checked 6h ago.

An undersea of magnitude 7.7 struck at , according to the reporting cited below. Indonesian authorities initially issued a tsunami warning for parts of East Nusa Tenggara, West Nusa Tenggara, South Sulawesi and Southeast Sulawesi provinces. The warning was later lifted. Australia's tsunami warning center said the undersea "will have no tsunami threat to the Australian mainland, islands or territories." The tsunami messaging refers to the event as the Flores . Beyond that, the record available for this report does not specify a location for the epicenter — no coordinates, distance from a named town or island are established here, and none should be inferred. Casualties, damage and any subsequent seismological revisions are likewise not established in the material at hand.

Earlier reports

Aug 16, 2026, 2:25 a.m. ET
Magnitude 7.7 Earthquake Recorded; Tsunami Warning Issued, Then Lifted
A magnitude 7.7 earthquake occurred at approximately 06:00 local time on August 15, 2026, according to the hazard record for the event.
A tsunami warning was initially issued and was later lifted, the same record states.
The record does not specify where the earthquake occurred. No country, region or place name is given for it, and it carries no epicenter coordinates and no depth.
The record also does not address damage, injuries or deaths, and it does not say which coastlines or communities the tsunami warning covered while it was in force, or when it was lifted.
Aug 15, 2026, 10:23 p.m. ETFirst report
7.7-Magnitude Earthquake Strikes Off Coast of Flores, Indonesia
A 7.7-magnitude earthquake struck off the coast of the Indonesian island of Flores at approximately 6:00 local time on August 15, 2026, according to reporting from kesq.com. The event is open and developing.
According to kesq.com, the quake occurred about 68 kilometers (42 miles) northwest of Ende in East Nusa Tenggara province. A tsunami warning was initially issued following the earthquake but was later lifted, kesq.com reported.

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Sources

Magnitude-7.7 quake hits off coast of Indonesia, killing at least 2nbcnewyork.com
47 dead from 7.7 magnitude Indonesia quake - UPI.comupi.com
'Screaming in fear': Rescuers search for survivors as Indonesian quake toll rises to 47newindianexpress.com
Dozens dead and hundreds flee after powerful earthquake hits Indonesiakesq.com
Dozens dead and hundreds flee after powerful earthquake hits Indonesiakrdo.com
Rescuers dig through rubble, landslides after Indonesia quake kills 51newindianexpress.com

Revision history

Version 518 Aug 2026, 10:24
Updated story with depth, conflicting times and places reported by sources, and details on tsunami warnings.
Version 417 Aug 2026, 09:56current
Updated report with specific location details, competing timestamps, and tsunami warning scope.
Version 316 Aug 2026, 12:20
Updated story with location details, time disagreements across outlets, and cited tsunami warning updates.
Version 216 Aug 2026, 06:53
Updated location details to report conflicting place descriptions from krdo.com and kesq.com, and attributed facts to both sources.
Version 116 Aug 2026, 02:23current
First published.
Version 116 Aug 2026, 06:25current
First published.

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