M5.5 earthquake 21 km NNW of Tatitlek, Alaska
A magnitude 5.5 earthquake struck 21 km NNW of Tatitlek, Alaska on Thu, Sep 6, 1973, 1:59 AM GMT-9 (10:59 UTC), 29 km (18 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.5 (mb), moderate
- Local time
- UTC
- 1973-09-06 10:59:36 UTC
- Depth
- 29.0 km (18.0 mi), shallow
- Epicenter
- 61.039° N, 146.828° 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
- 6.7% of gravity
- Peak ground velocity
- 1.2 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.
- Depth from
- CONSTRAINED_BY_DEPTH_PHASES
- Stations used
- 87
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.5 and up: 5 in the 60 days after this one and 2 in the 30 days before it.
After
- 3.251 km S of Glacier View, Alaska · 19373 days ago · 32 km deep · 55 km away
- 3.521 km NW of Tatitlek, Alaska · 19372 days ago · 57 km deep · 8 km away
- 3.29 km NW of Tatitlek, Alaska · 19369 days ago · 40 km deep · 14 km away
- 3.79 km WNW of Valdez, Alaska · 19340 days ago · 33 km deep · 21 km away
- 3.227 km W of Tatitlek, Alaska · 19334 days ago · 84 km deep · 24 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00003bn (also filed as ushis3248, iscgem756140). Read Tue, Sep 22, 2026, 4:15 PM UTC.