M6.4 earthquake in United States on March 4, 2026

On March 4, 2026 at 17:54 UTC the ground shook with a magnitude 6.4 earthquake. The epicenter was 223 km east of Attu Station, with the focus 10 km deep. It was a shallow quake, and shallow quakes are usually felt most strongly at the surface.

6.4magnitude
10 kmdepth
17:54time UTC
greenUSGS alert
Live earthquake map →

Key facts

The USGS PAGER system issued a green alert, expecting little impact. USGS flagged the event as an oceanic-region earthquake. Regional tsunami warning centers publish any tsunami information.

Nearest cities

  • Petropavlovsk-Kamchatskiy (Russia)1,195 km
  • Yuzhno-Sakhalinsk (Russia)2,470 km
  • Kitami (Japan)2,566 km
  • Kushiro (Japan)2,585 km
  • Obihiro (Japan)2,667 km

Did you feel an earthquake?

Report it to seismologists. These reports help work out quickly where the shaking was strongest. It takes a minute.

Report to USGS (Did You Feel It?)Report to EMSC (LastQuake)

Aftershocks

Since then USGS has recorded 21 quakes of magnitude 4.5 or more within 150 km, the strongest M5.8.

  • M5.8 · May 6, 14:15 UTC11 km
  • M5.7 · Mar 6, 21:08 UTC11 km
  • M5.3 · Mar 17, 16:21 UTC6 km
  • M5.2 · Mar 24, 20:59 UTC9 km
  • M5.1 · Aug 23, 23:20 UTC13 km
  • M5.1 · Mar 8, 22:41 UTC29 km
  • M5.0 · Apr 3, 08:22 UTC5 km
  • M5.0 · Mar 18, 04:36 UTC19 km

Regional history

Since 1976 there have been 54 earthquakes of magnitude 6 or more within 300 km. The strongest was M7.9 (June 23, 2014).

  • M7.9 · June 23, 2014170 km
  • M7.8 · November 17, 2003205 km
  • M7.1 · March 17, 2003161 km
  • M7.0 · January 30, 198165 km
  • M6.9 · June 23, 2003103 km

See also

Live earthquake mapAll earthquakes todayWeather in Petropavlovsk-KamchatskiyEvent details at USGS

Source: USGS Earthquake Hazards Program (public domain). Seismologists may still revise the data. Data from Oct 21, 18:04 UTC.