M5.5 earthquake 41 km SW of Cordova, Alaska
A magnitude 5.5 earthquake struck 41 km SW of Cordova, Alaska on Thu, Apr 30, 1964, 8:01 PM GMT-10 (06:01 UTC), 25 km (15 mi) below the surface.
A larger quake followed: M5.6 76 km SW of Cordova, Alaska. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.5 (mw), moderate
- Local time
- UTC
- 1964-05-01 06:01:56 UTC
- Depth
- 24.8 km (15.4 mi), shallow
- Epicenter
- 60.243° N, 146.208° W
- Region
- Alaska
- Strongest shaking
- V, moderate shaking
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Shaking
The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.
- Strongest estimated
- V, moderate shaking
- Peak ground acceleration
- 11.9% of gravity
- Peak ground velocity
- 1.9 cm/s
- Map
- Automatic
Did you feel it?
No one has reported feeling this quake to the USGS.
How well it is located
Reviewed by a seismologist.
- Magnitude uncertainty
- ±0.20
- Depth from
- From location
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.5 and up: 2 in the 60 days after this one and 7 in the 30 days before it.
After
- 5.676 km SW of Cordova, Alaska · 22761 days ago · 10 km deep · 34 km away
- 5.529 km SSW of Cordova, Alaska · 22754 days ago · 13 km deep · 14 km away
Before
- 5.536 km NE of Cordova, Alaska · 22800 days ago · 24 km deep · 78 km away
- 5.677 km SSE of Cordova, Alaska · 22811 days ago · 17 km deep · 67 km away
- 5.625 km SW of Cordova, Alaska · 22812 days ago · 14 km deep · 16 km away
- 5.687 km SE of Chenega, Alaska · 22812 days ago · 19 km deep · 87 km away
- 5.866 km E of Chenega, Alaska · 22815 days ago · 15 km deep · 35 km away
- 6.067 km E of Chenega, Alaska · 22816 days ago · 25 km deep · 45 km away
- 5.658 km WSW of Cordova, Alaska · 22816 days ago · 15 km deep · 24 km away
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event iscgem867377 (also filed as ushis2698). Read Tue, Sep 22, 2026, 8:58 AM UTC.