Official alert areas are not modelled inundation zones. The source country identifies the earthquake, not necessarily an affected coastline. Historical events and monitoring stations can be toggled separately.
Ports from the NGA World Port Index that fall inside the officially published warning areas. A warning area is not a computed inundation zone. This list describes neither damage nor any restriction of port operations.
Original source language; no automatic translation.
This is a Tsunami Information Statement.
This is a Tsunami Information Statement. - Event details: Preliminary magnitude 5.1 (mb) earthquake / Lat: 51.914, Lon: 175.834 at 2026-08-23T23:20:31 UTC An information statement indicates that an earthquake has occurred, but does not pose a tsunami threat, or that a tsunami warning, advisory, or watch has been issued for another section of the ocean.
There is NO tsunami danger from this earthquake. This will be the only U.S. National Tsunami Warning Center message issued for this event unless additional information becomes available. The location and magnitude are based on preliminary information. Further information will be issued by the United States Geological Survey (earthquake.usgs.gov) or the appropriate regional seismic network.
No additional official observations or forecasts are available for this bulletin.
NOAA NDBC · NOAA CO-OPS · IOC/UNESCO
Monitoring stations
1857
NOAA DART measures the water column above the seabed; coastal gauges show levels relative to mean sea level. Tides and other processes affect these values. A fluctuation or DART event mode alone does not confirm a tsunami. Gaps are not interpolated. Observations may be delayed or preliminary. The global IOC/UNESCO network aggregates national gauge networks; availability, sampling interval and reference level differ per operator.
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NOAA / NCEI
Historical tsunamis
822
The archive shows confirmed tsunamis since 1900 from NOAA/NCEI. Maximum documented water heights combine different observation types and locations; they describe neither a uniform open-ocean wave height nor current danger. Historical coverage varies by place and time.
Warning: dangerous inundation is possible. Advisory: dangerous currents and waves are possible. Watch: a potential threat is being assessed. National authorities interpret international threat messages. An information bulletin is not an active warning. Expired validity is not an official cancellation.
Which areas are covered?
Warning bulletins come from the NOAA centres NTWC, PTWC and NWS, from the European Commission's GDACS system, from the Japan Meteorological Agency and from Indonesia's BMKG. Measurements additionally come from the global sea level network of IOC/UNESCO. National warning systems in Australia, India, Chile and other states publish no openly accessible data interface and are therefore missing. The absence of a bulletin on this page is therefore not a worldwide all-clear.
How are the data processed?
QuakeMap24 processes structured authority bulletins, groups related updates and links matching earthquakes. Tests are excluded. Successful checks and bulletin times are shown separately. Forecasts come exclusively from published NOAA products; no arrival times or inundation forecasts are calculated here.
United StatesAlaskaInformationM5.2
PhilippinesE. MINDANAO ISLAND
VanuatuVANUATU ISLANDS
GreenlandDICKSON FJORD, GREENLAND
JapanIZU ISLANDS, JAPAN
New CaledoniaLOYALTY ISLANDS
New ZealandS OF RAOUL ISLAND, KERMADEC ISLANDS