Quakes

256 km wnw of adak, alaska

USGS-USP000HM7N

issued: 2010-09-26 18:27Z
status: cancelled 2010-09-29 18:27Z
self-cancels: 2010-09-29 18:27Z
authority: USGS NEIC
sea: Bering Sea
position: 52.438, 179.732
source: usgs · first seen 2026-09-03 15:13Z

Original warning text

256 KM WNW OF ADAK, ALASKA.
1. EARTHQUAKE MAGNITUDE 5.8 (MWB) IN 52.438N 179.732E, DEPTH 226 KM AT 261827Z SEP 10.
2. USGS EVENT USP000HM7N. https://earthquake.usgs.gov/earthquakes/eventpage/usp000hm7n

This area · earthquake & tsunami bulletins

80 within 180 nm since 1997 · 7 in the last 12 months · 0 in force now

296 km wsw of adak, alaska2026-05-09
Earthquake magnitude 6.1 (ml) in 50.981N 179.214E, depth 16 km at 090442Z may 262026-05-09
233 km ese of attu station, alaska2026-05-06
231 km ese of attu station, alaska2026-03-06
223 km ese of attu station, alaska2026-03-04
280 km ese of attu station, alaska2026-01-15

Season · when earthquake & tsunami bulletins happen here

month of issue, all years in the archive

Timeline · 2 messages since 2010-09-23 · closed 2010-09-29

250 km w of adak, alaska2010-09-23 → 2010-09-26
256 km wnw of adak, alaska this message2010-09-26 → 2010-09-29

joined by proximity

Nearby now · within 120 nm

Nothing else in force within 120 nm.

Worldwide now

5 earthquake & tsunami bulletins in force · see all

Quakes

Undersea earthquakes of magnitude 5.5 and above (USGS) and the tsunami bulletins NAVAREA coordinators relay. All current earthquake & tsunami bulletins →

Not for navigation. This is a re-rendering of an official navigational warning for awareness; mariners must use official NAVAREA broadcasts and their national MSI service.