A magnitude 5.3 earthquake was recorded 151 km WSW of Adak, Alaska on Sep 11, 2026, 10:47:12 AM (2026-09-11T10:47:12.613Z). The earthquake occurred at a depth of 40.9 km with coordinates 51.2130, -178.5429.
M5.3 · 40.9 km deep · 1,564 km E of Petropavlovsk-Kamchatsky, Russia
Magnitude 5.3 (mb) was reported for this earthquake.
Reported depth: 40.9 km (shallow, 0–70 km).
The epicentre was 1,564 km E of Petropavlovsk-Kamchatsky, Russia.
USGS significance score: 432. USGS calculates this number from magnitude, maximum intensity, felt reports and estimated impact; it is not a risk rating.
No felt reports or intensity data have been published for this event.
General information: magnitude measures the energy released at the source on a logarithmic scale — each whole number is roughly 32 times more energy. Depth is how far below the surface the rupture began. Whether an earthquake is felt, and how strongly, depends on many factors and is best shown by felt reports and intensity data.
The epicentre was located at 51.2130 latitude and -178.5429 longitude, 151 km WSW of Adak, Alaska. The earthquake was shallow at 40.9 km depth.
More earthquakes in Alaska
Data source: USGS Earthquake Hazards Program event page. Earthquake data is collected from multiple seismic agencies, including the USGS, GeoNet, BMKG and the British Geological Survey (BGS).
Data source: USGS Earthquake Hazards Program. Enable JavaScript for the live interactive map.