M5.4 earthquake 57 km NNW of Tanana, Alaska
A magnitude 5.4 earthquake struck 57 km NNW of Tanana, Alaska on Wed, Jun 4, 1986, 7:48 AM AKDT (15:48 UTC), 10 km (6 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.4 (Mw, moment), moderate
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1986-06-04 15:48:20 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 65.636° N, 152.604° 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 |
|---|---|---|---|
| 5.4 | Mw, moment | USGS National Earthquake Information Center | Preferred · Reviewed |
| 5.36 | Mw, moment | ISC-GEM global catalog | Final · ±0.1 |
| 4.7 | Ms, surface-wave | USGS historic United States catalog | Final |
| 5.4 | Mwc, centroid moment | Global CMT project | Preliminary |
What happened
The USGS’s account of the effects of this earthquake.
Felt (V) at Tanana, (IV) at Hughes, Huslia, Indian Mountain, Livengood, Manley Hot Springs, Rampart, Utopia Creek and Galena Air Force Station. Felt (III) at Bettles, Fairbanks, Lake Minchumina, Minto, Ruby and Shungnak. CENTROID, MOMENT TENSOR (HRV) Data Used: GDSN L.P.B.: 9S, 22C Centroid Location: Origin Time 15:48:26.7 0.7 Lat 65.84N 0.09 Lon 153.01W 0.17 Dep 15.0 FIX Half-duration 1.9 Moment Tensor; Scale 10**24 D-CM Mrr=0.15 0.05 Mtt=-0.26 0.05 Mff=0.11 0.06 Mrt=0.48 0.14 Mrf=0.52 0.19 Mtf=-1.21 0.08 Principal Axes: (T) Val=1.16 Plg=6 Azm=231 (N) Val=0.43 Plg=67 Azm=334 (P) Val=-1.59 Plg=22 Azm=139 Best Double Couple:Mo=1.4*10**24 NP1:Strike=277 Dip=71 Slip=-168 NP2:Strike=183 Dip=79 Slip=-20
Maximum observed Modified Mercalli Intensity (MMI) V
From the USGS event page for usp0002usn. 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.
How well it is located
Reviewed by a seismologist.
- Depth from
- OPERATOR_ASSIGNED
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.4 and up: 3 in the 60 days after this one and 0 in the 30 days before it.
After
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002usn (also filed as gcmtb060486a, ushis3953, gcmt19860604154820, iscgem492467). Read Sun, Oct 4, 2026, 5:08 PM UTC.