M3.7 earthquake 27 km NW of Susitna, Alaska
A magnitude 3.7 earthquake struck 27 km NW of Susitna, Alaska on Thu, Mar 21, 1974, 2:01 PM GMT-9 (23:01 UTC), 71 km (44 mi) below the surface.
A larger quake followed: M3.8 13 km NNW of Susitna, Alaska. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 3.7 (mb, body-wave), minor
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1974-03-21 23:01:30 UTC
- Depth
- 71.0 km (44.1 mi), intermediate-depth
- Epicenter
- 61.696° N, 150.926° 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.
- Stations used
- 17
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 5 in the 60 days after this one and 2 in the 30 days before it.
After
- 3.512 km WSW of Petersville, Alaska · 19183 days ago · 34 km deep · 86 km away
- 3.530 km WNW of Susitna, Alaska · 19179 days ago · 83 km deep · 4 km away
- 3.334 km NNW of Susitna, Alaska · 19152 days ago · 78 km deep · 22 km away
- 3.813 km NNW of Susitna, Alaska · 19137 days ago · 67 km deep · 18 km away
- 3.229 km NE of Skwentna, Alaska · 19132 days ago · 88 km deep · 57 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00005pm. Read Fri, Oct 2, 2026, 8:40 AM UTC.