M2.4 earthquake 244 km SSW of Adak, Alaska
A magnitude 2.4 earthquake struck 244 km SSW of Adak, Alaska on Sat, Aug 19, 2023, 12:41 PM HADT (21:41 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M4.0 173 km SSW 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
- 2.4 (ML, local (Richter)), micro
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2023-08-19 21:41:14 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 49.924° N, 178.247° 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 |
|---|---|---|---|
| 2.4 | ML, local (Richter) | USGS National Earthquake Information Center | Preferred · Reviewed · ±0.148 · 12 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 8.3 km horizontally, 2.0 km in depth
- Magnitude uncertainty
- ±0.15
- Depth from
- Operator assigned
- Station coverage gap
- 294°, poorly surrounded by stations
- Stations used
- 15
Nearby
Within 100 km, magnitude 1.5 and up: 4 in the 60 days after this one and 6 in the 30 days before it.
After
- 4.0173 km SSW of Adak, Alaska · 1139 days ago · 10 km deep · 87 km away
- 1.9190 km SW of Adak, Alaska · 1135 days ago · 5 km deep · 61 km away
- 3.1264 km SW of Adak, Alaska · 1119 days ago · 10 km deep · 38 km away
- 3.0244 km SW of Adak, Alaska · 1081 days ago · 10 km deep · 37 km away
Before
- 2.1195 km SSW of Adak, Alaska · 1140 days ago · 1 km deep · 50 km away
- 3.0274 km SW of Adak, Alaska · 1145 days ago · 10 km deep · 55 km away
- 2.6280 km SW of Adak, Alaska · 1148 days ago · 10 km deep · 53 km away
- 2.5241 km SSW of Adak, Alaska · 1149 days ago · 10 km deep · 18 km away
- 2.6247 km SW of Adak, Alaska · 1156 days ago · 39 km deep · 95 km away
- 2.1222 km S of Adak, Alaska · 1163 days ago · 12 km deep · 95 km away
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us7000kt94 (also filed as ak023amdw3kq). Read Fri, Oct 2, 2026, 7:25 PM UTC.