Earthquake · reviewed by a seismologist
M 1.9ml
Earthquake near Sutton-Alpine, AK
No earthquake was likely felt in Sutton-Alpine in the 24 hours to 7:02 am AKST (16:02 UTC). The last one was M 4.4, 100 km (62 mi) E, at 11:11 am AKDT on 30 October 2026, estimated intensity II (weak) in town; 54 felt reports to USGS. Every earthquake near Sutton-Alpine
This page: a magnitude 1.9 earthquake was recorded 15 km (10 mi) northeast of Sutton-Alpine, AK, at 12:58 pm AKDT on 5 June 2025 (20:58 UTC), 14 km deep. 1 person has reported feeling it to USGS.
USGS: 5 km NE of Sutton-Alpine, Alaska
92 km (57 mi) NE of Anchorage, AK
- When
- 12:58 pm AKDT on 5 June 2025 ()
- Where
- 15 km (10 mi) northeast of Sutton-Alpine, AK · earthquakes near Sutton-Alpine
- Magnitude
- M 1.9 (ml)
- Depth
- 14 km below the surface
- Felt
- 1 report · strongest reported intensity III
- Nearest
- Matanuska-Susitna Borough, 65 km NW
- Nearest mapped fault
- Castle Mountain fault, under 1 km from its surface trace — near is not the same as on
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 520 days ago
Earthquake alerts for Sutton-Alpine, AK
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Alerts are on for .
Not a warning. An alert comes after USGS publishes a quake, usually minutes after the shaking. For early warning use ShakeAlert, through your phone's Wireless Emergency Alerts or the MyShake app.
This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.
At this magnitude and depth, people at rest would likely notice it out to about 6 km (4 mi) from the epicentre. In Sutton-Alpine, 15 km away, the estimate is intensity II (weak). Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.
Earthquakes near other towns within 30 km: Lazy Mountain, Fishhook.
How big was it?
This earthquake released about 21 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 710,000× the energy of this one
- Magna, Utah 2020 M 5.7 500,000× the energy of this one
- Around the size people start to feel M 3.0 45× the energy of this one
- This earthquake M 1.9 about 21 lb of TNT
Energy from the Gutenberg–Richter relation (log10E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.
For this area
The largest earthquake within 50 km since 2016 was M 4.6 on 2018-01-27 — about 11,000 times the energy of this one.
Before 2016, the USGS record lists 2 earthquakes of M5 or more within 50 km:
- 5.8 14 km NNE of Fishhook, Alaska · 21 km WNW of this epicentre
- 5.0 4 km N of Chickaloon, Alaska · 13 km E of this epicentre
Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.
Where
Epicentre 61.8156, -148.7043. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Matanuska-Susitna Borough, AK | 65 km (40 mi) | NW | earthquakes near Matanuska-Susitna Borough |
| Anchorage Municipality, AK | 78 km (48 mi) | SSW | earthquakes near Anchorage Municipality |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
56 earthquakes have been recorded within 50 km since this one.
- 1.8 21 km N of Fishhook, Alaska
- 1.8 35 km SSE of Chickaloon, Alaska
- 1.6 8 km SSW of Chickaloon, Alaska
- 2.3 28 km N of Chickaloon, Alaska
- 2.2 13 km NNE of Fishhook, Alaska
- 2.3 42 km NNW of Chickaloon, Alaska
- 1.7 11 km E of Knik River, Alaska
- 1.8 20 km N of Fishhook, Alaska
- 2.8 11 km N of Sutton-Alpine, Alaska
- 1.5 28 km SSE of Chickaloon, Alaska
- 1.5 44 km N of Chickaloon, Alaska
- 1.6 21 km N of Fishhook, Alaska
- 1.7 21 km NNE of Fishhook, Alaska
- 2.2 25 km NNE of Chickaloon, Alaska
- 1.7 37 km N of Chickaloon, Alaska
Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.
On USGS
- The official USGS event page — the source of record for every value above
- Did you feel it? Report it to USGS — reports go to USGS, not to us
- ShakeMap for this event, when USGS has produced one
QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.