Information about tsunamis in United States, the responsible authority, and official activity available on EarthSentra.
Integrated sources: PTWC (NOAA), NTWC (NOAA).
Tsunami alerts in United States today
Partial NOAA territorial coverage: this hub displays NTWC products; PTWC serves Hawaii and U.S. Pacific and Caribbean territories. NTWC status does not represent all U.S. areas. Check both official centers for your area.
Source: NOAA · National Tsunami Warning Center (NTWC) / Pacific Tsunami Warning Center (PTWC)
Regional tsunami assessment for United States
No recent event-linked regional assessment explicitly identifies this country. No recorded assessment does not mean there is no risk.
Map of United States
Areas with a tsunami alert in United States
There are currently no areas in United States with a recorded active official alert.
Official tsunami alerts and bulletins in United States
| Assessment | Scope | UTC time |
|---|---|---|
| GDE status: ⚪ Level unavailable | Regional / basin | 24/10/2026 02:39 |
| GDE status: 🟢 Normal | Regional / basin | 24/10/2026 02:39 |
Previous tsunami bulletins in United States
Informational archive. These messages are outside the current operational window and do not by themselves represent a current alert.
| Assessment | Scope | UTC time |
|---|---|---|
| GDE status: ⚪ Level unavailable | Regional / basin | 20/10/2026 10:45 |
| GDE status: ⚪ Level unavailable | Regional / basin | 20/10/2026 04:31 |
| GDE status: ⚪ Level unavailable | Regional / basin | 16/10/2026 03:47 |
How to interpret a tsunami alert in United States
NOAA · National Tsunami Warning Center (NTWC) / Pacific Tsunami Warning Center (PTWC)
NOAA operates NTWC and PTWC for tsunami monitoring and official products applicable to different U.S. territories; responsibility depends on the area.
National priority
When an official national assessment exists, it takes priority for that country over regional or international sources.
No inference
EarthSentra does not automatically turn an undersea earthquake or a regional bulletin into a national alert.
In an emergency, follow evacuation orders and official channels from local authorities. EarthSentra is an information service and does not replace official warning systems.
Historical tsunamis in United States
A selection of historical tsunamis with documented impact for United States from the integrated institutional catalogs.
| Date | Event / location | Cause | EQ mag. | Max run-up | Deaths |
|---|---|---|---|---|---|
| 2025-08-10 | TRACY ARM, AK | Landslide | — | 481.00 m | — |
| 2024-11-17 | COLUMBIA RIVER VALLEY, WA | Landslide | — | 14.33 m | — |
| 2024-08-07 | PEDERSEN LAGOON, AK | Landslide | — | 62.00 m | — |
| 2015-10-18 | TAAN FJORD, AK | Landslide | — | 193.00 m | — |
| 2009-08-25 | COLUMBIA RIVER VALLEY, WA | Landslide | — | 3.60 m | — |
| 2009-01-16 | COLUMBIA RIVER VALLEY, WA | Landslide | — | 9.00 m | — |
| 2008-10-28 | MAINE | Meteorological | — | 3.60 m | — |
| 1994-11-04 | SKAGWAY, AK | Landslide | — | 9.00 m | 1 |
| 1989-10-18 | N. CALIFORNIA | Earthquake | M6.9 | 1.00 m | 62 |
| 1980-05-18 | WASHINGTON | Volcano and Landslide | — | 250.00 m | 61 |
Public selection of notable historical tsunamis in United States, derived from the institutional NOAA/NCEI catalogue. The complete catalogue retains 292 certified records; this chronology shows country-origin events meeting documentary impact criteria. Missing values are never invented.
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Is there a tsunami warning in the United States today?
Check whether a tsunami warning in the United States today is active, which coastal areas are included in official bulletins and how the assessment is changing. Alaska, Hawaii and the U.S. Pacific Coast are key areas for tsunami monitoring.
How to check the current risk
Review the latest official status, affected area and bulletin time. A precautionary watch can change or be cancelled as new measurements become available.
See also tsunami alerts today and recent earthquakes.