M2.6 earthquake 232 km SSW of Adak, Alaska
A magnitude 2.6 earthquake struck 232 km SSW of Adak, Alaska on Mon, May 11, 2020, 6:52 PM HADT (03:52 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M3.8 189 km S of Adak, Alaska. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 2.6 (ML, local (Richter)), micro
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2020-05-12 03:52:53 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 49.962° N, 177.965° W
- Region
- Alaska
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Magnitude estimates
Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.
| Mag. | Scale | Computed by | Notes |
|---|---|---|---|
| 2.6 | ML, local (Richter) | USGS National Earthquake Information Center | Preferred · Reviewed · ±0.148 · 6 stations |
| 2.5 | ML, local (Richter) | Alaska Earthquake Center | Preliminary |
Did you feel it?
No one has reported feeling this quake to the USGS.
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 9.0 km horizontally, 2.0 km in depth
- Magnitude uncertainty
- ±0.15
- Depth from
- Operator assigned
- Station coverage gap
- 285°, poorly surrounded by stations
- Stations used
- 19
Nearby
Within 100 km, magnitude 1.5 and up: 4 in the 60 days after this one and 3 in the 30 days before it.
After
- 2.5191 km S of Adak, Alaska · 2309 days ago · 31 km deep · 69 km away
- 2.7248 km SW of Adak, Alaska · 2306 days ago · 21 km deep · 61 km away
- 2.8252 km SW of Adak, Alaska · 2296 days ago · 10 km deep · 79 km away
- 3.8189 km S of Adak, Alaska · 2291 days ago · 10 km deep · 75 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us70009igh (also filed as ak020640kpxw). Read Thu, Oct 1, 2026, 8:57 AM UTC.