M3.1 earthquake 295 km SW of Adak, Alaska
A magnitude 3.1 earthquake struck 295 km SW of Adak, Alaska on Wed, Mar 20, 2019, 5:03 AM GMT-12 (17:03 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M3.9 214 km SW 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
- 3.1 (ML, local (Richter)), minor
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2019-03-20 17:03:54 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 50.156° N, 179.852° 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 |
|---|---|---|---|
| 3.1 | ML, local (Richter) | USGS National Earthquake Information Center | Preferred · Reviewed |
| 3.1 | 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 7.9 km horizontally, 2.0 km in depth
- Depth from
- Operator assigned
- Station coverage gap
- 317°, poorly surrounded by stations
- Stations used
- 19
Nearby
Within 100 km, magnitude 1.5 and up: 8 in the 60 days after this one and 2 in the 30 days before it.
After
- 3.3Rat Islands, Aleutian Islands, Alaska · 2747 days ago · 26 km deep · 33 km away
- 3.2220 km WSW of Adak, Alaska · 2747 days ago · 28 km deep · 94 km away
- 3.8220 km WSW of Adak, Alaska · 2735 days ago · 10 km deep · 96 km away
- 3.9214 km SW of Adak, Alaska · 2728 days ago · 10 km deep · 83 km away
- 3.8231 km SW of Adak, Alaska · 2728 days ago · 10 km deep · 65 km away
- 3.7230 km SW of Adak, Alaska · 2721 days ago · 30 km deep · 68 km away
- 2.6232 km WSW of Adak, Alaska · 2720 days ago · 16 km deep · 96 km away
- 3.4283 km SW of Adak, Alaska · 2696 days ago · 10 km deep · 12 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us700036gr (also filed as ak0193mxljo2). Read Fri, Oct 2, 2026, 1:37 AM UTC.