M2.5 earthquake 173 km N of Adak, Alaska
A magnitude 2.5 earthquake struck 173 km N of Adak, Alaska on Fri, Jul 6, 2018, 1:40 PM HADT (22:40 UTC), 16 km (10 mi) below the surface.
A larger quake followed: M4.5 95 km N 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
- 2.5 (ML, local (Richter)), micro
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2018-07-06 22:40:27 UTC
- Depth
- 16.0 km (10.0 mi), shallow
- Epicenter
- 53.433° N, 176.529° W
- Region
- Alaska
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
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 7.0 km horizontally, 8.0 km in depth
- Depth from
- From location
- Station coverage gap
- 206°, poorly surrounded by stations
- Stations used
- 16
Nearby
Within 100 km, magnitude 1.5 and up: 1 in the 60 days after this one and 0 in the 30 days before it.
After
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us2000g2kx. Read Sat, Oct 3, 2026, 10:11 AM UTC.