M2.7 earthquake 220 km SSE of Atka, Alaska
A magnitude 2.7 earthquake struck 220 km SSE of Atka, Alaska on Sun, Sep 29, 2019, 11:36 AM HADT (20:36 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M4.1 241 km SE of Atka, Alaska. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 2.7 (ML, local (Richter)), micro
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2019-09-29 20:36:13 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 50.359° N, 173.002° 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 |
|---|---|---|---|
| 2.7 | ML, local (Richter) | USGS National Earthquake Information Center | Preferred · Reviewed |
| 2.7 | 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 8.4 km horizontally, 2.0 km in depth
- Depth from
- Operator assigned
- Station coverage gap
- 258°, poorly surrounded by stations
- Stations used
- 17
Nearby
Within 100 km, magnitude 1.5 and up: 10 in the 60 days after this one and 2 in the 30 days before it.
After
- 2.2172 km SE of Atka, Alaska · 2560 days ago · 9 km deep · 65 km away
- 2.1194 km SSE of Atka, Alaska · 2556 days ago · 12 km deep · 28 km away
- 1.9196 km S of Atka, Alaska · 2556 days ago · 20 km deep · 70 km away
- 2.2176 km SSE of Atka, Alaska · 2555 days ago · 10 km deep · 47 km away
- 2.5164 km SSE of Atka, Alaska · 2553 days ago · 10 km deep · 57 km away
- 4.1241 km SE of Atka, Alaska · 2538 days ago · 10 km deep · 79 km away
- 2.6182 km SSE of Atka, Alaska · 2532 days ago · 10 km deep · 45 km away
- 2.3155 km S of Atka, Alaska · 2529 days ago · 13 km deep · 79 km away
- 2.5153 km SSE of Atka, Alaska · 2522 days ago · 10 km deep · 68 km away
- 2.5Andreanof Islands, Aleutian Islands, Alaska · 2508 days ago · 10 km deep · 81 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us70006240 (also filed as ak019ci6atqr). Read Mon, Oct 5, 2026, 5:14 AM UTC.