M4.3 earthquake northern Alaska
A magnitude 4.3 earthquake struck in northern Alaska on Sat, Nov 27, 2021, 4:44 PM AKST (01:44 UTC), 19 km (12 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.3 (ml), light
- Local time
- UTC
- 2021-11-28 01:44:11 UTC
- Depth
- 19.4 km (12.1 mi), shallow
- Epicenter
- 66.965° N, 146.559° W
- Region
- Alaska
- Felt reports
- 3
- Strongest shaking
- IV, light shaking
- PAGER alert
- Green
- 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
- IV, light shaking
- Peak ground acceleration
- 3.4% of gravity
- Peak ground velocity
- 0.4 cm/s
- Map
- Automatic
Did you feel it?
3 people reported to the USGS what they felt; the strongest reported shaking was IV, light shaking.
Estimated impact
The USGS PAGER system estimates deaths and economic losses from the shaking and the population and buildings exposed to it.
- Alert level
- Green: little or no damage or loss of life expected
| Range | Chance |
|---|---|
| Under 1 | 69% |
| 1 to 10 | 29% |
| 10 to 100 | 2% |
| 100 to 1,000 | Under 1% |
| 1,000 to 10,000 | Under 1% |
| 10,000 to 100,000 | Under 1% |
| 100,000 to 10,000,000 | Under 1% |
| Range, million USD | Chance |
|---|---|
| Under 1 | 65% |
| 1 to 10 | 30% |
| 10 to 100 | 4% |
| 100 to 1,000 | Under 1% |
| 1,000 to 10,000 | Under 1% |
| 10,000 to 100,000 | Under 1% |
| 100,000 to 10,000,000 | Under 1% |
Fault motion and ground failure
How the rock slipped, from the moment tensor, and the USGS estimate of landslides and liquefaction.
- Faulting
- Strike-slip
- Moment magnitude
- 4.0 Mwr
- Nodal plane 1
- Strike 296°, dip 51°, rake 171°
- Nodal plane 2
- Strike 32°, dip 83°, rake 39°
How well it is located
Reviewed by a seismologist.
- Stations used
- 173
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 8 in the 60 days after this one and 9 in the 30 days before it.
After
- 2.84 km SW of Venetie, Alaska · 1765 days ago · 13 km deep · 3 km away
- 2.65 km SSW of Venetie, Alaska · 1765 days ago · 14 km deep · 4 km away
- 2.78 km WSW of Venetie, Alaska · 1765 days ago · 16 km deep · 2 km away
- 2.310 km SW of Venetie, Alaska · 1758 days ago · 16 km deep · 3 km away
- 2.540 km NNE of Beaver, Alaska · 1745 days ago · 19 km deep · 38 km away
- 1.66 km W of Venetie, Alaska · 1731 days ago · 17 km deep · 6 km away
- 1.626 km SSE of Venetie, Alaska · 1718 days ago · 13 km deep · 25 km away
- 1.569 km NNW of Venetie, Alaska · 1713 days ago · 10 km deep · 71 km away
Before
- 2.46 km SW of Venetie, Alaska · 1765 days ago · 16 km deep · 2 km away
- 3.77 km SW of Venetie, Alaska · 1765 days ago · 11 km deep · 2 km away
- 1.716 km SSE of Venetie, Alaska · 1767 days ago · 16 km deep · 15 km away
- 2.44 km SSW of Venetie, Alaska · 1772 days ago · 17 km deep · 4 km away
- 1.529 km NNE of Beaver, Alaska · 1772 days ago · 15 km deep · 48 km away
- 2.537 km WSW of Venetie, Alaska · 1777 days ago · 11 km deep · 29 km away
- 1.847 km WSW of Venetie, Alaska · 1777 days ago · 20 km deep · 39 km away
- 2.369 km NE of Venetie, Alaska · 1777 days ago · 11 km deep · 78 km away
- 1.670 km SSE of Arctic Village, Alaska · 1784 days ago · 16 km deep · 88 km away
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event ak021f93a45y (also filed as us7000fxli). Read Mon, Sep 28, 2026, 1:45 AM UTC.