M4.6 earthquake 129 km E of McCarthy, Alaska
A magnitude 4.6 earthquake struck 129 km E of McCarthy, Alaska on Sun, Oct 5, 2025, 3:20 AM AKDT (11:20 UTC), 12 km (8 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.6 (Mwr, regional moment), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2025-10-05 11:20:05 UTC
- Depth
- 12.2 km (7.6 mi), shallow
- Epicenter
- 61.411° N, 140.490° W
- Region
- Alaska
- Felt reports
- 4
- Strongest shaking
- IV, light shaking
- PAGER alert
- Green
- 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 |
|---|---|---|---|
| 4.6 | Mwr, regional moment | USGS National Earthquake Information Center | Preferred · Reviewed · ±0.046 · 45 stations |
| 4.6 | ML, local (Richter) | Alaska Earthquake Center | Preliminary |
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
- 6.2% of gravity
- Peak ground velocity
- 2.5 cm/s
- Map
- Automatic
Did you feel it?
4 people reported to the USGS what they felt; the strongest reported shaking was III, weak 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 | 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% |
| 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
- 4.6 Mwr
- Nodal plane 1
- Strike 301°, dip 89°, rake -151°
- Nodal plane 2
- Strike 211°, dip 61°, rake -1°
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 1.9 km horizontally, 6.4 km in depth
- Magnitude uncertainty
- ±0.05
- Depth from
- From location
- Station coverage gap
- 92°
- Stations used
- 32
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.6 and up: 20 in the 60 days after this one and 7 in the 30 days before it.
After
- 2.0113 km ESE of McCarthy, Alaska · 358 days ago · 0 km deep · 57 km away
- 2.7100 km ESE of McCarthy, Alaska · 355 days ago · 13 km deep · 36 km away
- 1.896 km E of McCarthy, Alaska · 354 days ago · 12 km deep · 37 km away
- 1.696 km E of McCarthy, Alaska · 337 days ago · 0 km deep · 35 km away
- 2.7125 km E of McCarthy, Alaska · 326 days ago · 8 km deep · 7 km away
- 2.087 km ESE of McCarthy, Alaska · 317 days ago · 13 km deep · 51 km away
- 1.8125 km ESE of McCarthy, Alaska · 317 days ago · 10 km deep · 28 km away
- 2.184 km E of McCarthy, Alaska · 313 days ago · 9 km deep · 50 km away
- 1.893 km E of McCarthy, Alaska · 313 days ago · 10 km deep · 41 km away
- 1.8129 km SSE of Alcan Border, Alaska · 312 days ago · 1 km deep · 36 km away
- 1.6157 km N of Yakutat, Alaska · 311 days ago · 19 km deep · 64 km away
- 1.6105 km ESE of McCarthy, Alaska · 310 days ago · 1 km deep · 34 km away
- 1.9125 km E of McCarthy, Alaska · 306 days ago · 1 km deep · 19 km away
- 1.8127 km NNW of Yakutat, Alaska · 306 days ago · 5 km deep · 89 km away
- 1.6106 km E of McCarthy, Alaska · 305 days ago · 4 km deep · 35 km away
- 1.8134 km NNW of Yakutat, Alaska · 303 days ago · 18 km deep · 87 km away
- 1.8118 km E of McCarthy, Alaska · 302 days ago · 5 km deep · 20 km away
- 2.696 km E of McCarthy, Alaska · 302 days ago · 5 km deep · 39 km away
- 1.898 km E of McCarthy, Alaska · 302 days ago · 8 km deep · 37 km away
- 1.9155 km SSE of Alcan Border, Alaska · 302 days ago · 1 km deep · 26 km away
Before
- 1.993 km E of McCarthy, Alaska · 370 days ago · 11 km deep · 37 km away
- 1.8103 km ESE of McCarthy, Alaska · 377 days ago · 0 km deep · 62 km away
- 1.989 km E of McCarthy, Alaska · 377 days ago · 0 km deep · 40 km away
- 1.697 km E of McCarthy, Alaska · 388 days ago · 7 km deep · 34 km away
- 2.098 km E of McCarthy, Alaska · 388 days ago · 0 km deep · 32 km away
- 1.993 km E of McCarthy, Alaska · 388 days ago · 9 km deep · 38 km away
- 3.5104 km E of McCarthy, Alaska · 389 days ago · 5 km deep · 26 km away
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us6000rexs (also filed as ak025cry2ji8). Read Thu, Oct 1, 2026, 7:24 AM UTC.