M2.7 earthquake 37 km SW of Cantwell, Alaska
A magnitude 2.7 earthquake struck 37 km SW of Cantwell, Alaska on Tue, Dec 19, 1978, 9:17 PM GMT-10 (07:17 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M3.1 36 km SE of Denali National Park, 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), micro
- Local time
- UTC
- 1978-12-20 07:17:03 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 63.174° N, 149.527° 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.
- Depth from
- OPERATOR_ASSIGNED
- 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: 4 in the 60 days after this one and 1 in the 30 days before it.
After
- 3.136 km SE of Denali National Park, Alaska · 17419 days ago · 33 km deep · 84 km away
- 3.134 km SE of Denali National Park, Alaska · 17408 days ago · 33 km deep · 85 km away
- 3.537 km SE of Denali National Park, Alaska · 17407 days ago · 33 km deep · 83 km away
- 4.924 km NE of Susitna North, Alaska · 17384 days ago · 54 km deep · 96 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000y0a. Read Tue, Sep 22, 2026, 11:19 AM UTC.