M5.1 earthquake 50 km W of Cantwell, Alaska
A magnitude 5.1 earthquake struck 50 km W of Cantwell, Alaska on Tue, Apr 19, 1983, 9:12 AM GMT-10 (19:12 UTC), 113 km (70 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.1 (mb, body-wave), moderate
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1983-04-19 19:12:48 UTC
- Depth
- 112.9 km (70.2 mi), intermediate-depth
- Epicenter
- 63.371° N, 149.957° W
- Region
- Alaska
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Magnitude estimates
Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.
| Mag. | Scale | Computed by | Notes |
|---|---|---|---|
| 5.1 | mb, body-wave | USGS National Earthquake Information Center | Preferred · Reviewed · 44 stations |
| 5.11 | Mw, moment | ISC-GEM global catalog | Final · ±0.1 |
| 5.1 | Mwc, centroid moment | Global CMT project | Preliminary |
What happened
The USGS’s account of the effects of this earthquake.
Felt (V) at Curry's Corner and (IV) at Big Lake, Cantwell, Chickaloon, Denali National Park, Fairbanks, McKinley Park, Palmer, Skwentna, Wasilla and Willow. Also felt (III) at Anchorage, Healy and Sutton.
From the USGS event page for usp0001uk7. U.S. Geological Survey text and figures are in the public domain.
Did you feel it?
No one has reported feeling this quake to the USGS.
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.1 and up: 7 in the 60 days after this one and 0 in the 30 days before it.
After
- 3.119 km SE of Denali National Park, Alaska · 15866 days ago · 33 km deep · 72 km away
- 3.035 km SE of Denali National Park, Alaska · 15856 days ago · 33 km deep · 61 km away
- 3.724 km S of Denali National Park, Alaska · 15843 days ago · 33 km deep · 87 km away
- 3.242 km SE of Denali National Park, Alaska · 15839 days ago · 33 km deep · 54 km away
- 3.757 km SE of Denali National Park, Alaska · 15831 days ago · 147 km deep · 49 km away
- 3.36 km NNE of Healy, Alaska · 15827 days ago · 10 km deep · 79 km away
- 3.629 km S of Denali National Park, Alaska · 15813 days ago · 30 km deep · 83 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001uk7 (also filed as gcmtb041983b, gcmt19830419191248, iscgem579164). Read Fri, Oct 2, 2026, 5:07 PM UTC.