NAVAREA XI 26-0454
Tsunami threat after M7.6 earthquake in central Pacific Ocean
Warning text
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No longer in forceAn earthquake of magnitude 7.6 occurred at 09 Oct 17:56Z at 07.5N 080.8W in the Pacific Ocean. A tsunami threat is reported and vessels in coastal areas are requested to be cautious. The message is self-cancelling at 11 Oct 14:00Z unless superseded.
Coastal vessels and mariners keep watch, proceed with caution and follow local coastal warnings and instructions.
Background (general knowledge, not from the warning)
A magnitude 7-plus earthquake in the open Pacific can generate tsunamis that travel long distances across ocean basins. Tsunami advisories are routinely issued after such earthquakes until wave observations and modelled propagation show no coastal threat. Mariners should expect that local coastal authorities in potentially affected countries will issue more detailed warnings, watches or evacuation orders. Wave arrival times and amplitudes depend on source location, depth and coastal bathymetry; distant effects may persist for many hours after the event.
- Type
- Other · severity high
- Location
- Pacific Ocean
- Validity
- From 09 Oct 2026, 17:56 UTC
Until 11 Oct 2026, 14:00 UTCCANCEL THIS MSG 111400Z OCT. - Activity periods
- 09 Oct 2026, 17:56 UTC - 11 Oct 2026, 14:00 UTC (from earthquake time until cancel time)
- Hazards
- tsunami threat
Coast stations for this area
- DSCDSC Station EsmeraldasGuayaquil Coast GuardEcuadorMMSI 007354752VHF 30range 30 NM399 NM from the area
Worked out automatically from the warning text on 10 Oct 2026, 07:47 UTC; the background is general knowledge, not from the warning. It can be wrong: the official warning text is the authority.
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