Earthquake · reviewed by a seismologist
M 1.7ml
Earthquake near Sutton-Alpine, AK
No earthquake was likely felt in Sutton-Alpine in the 24 hours to 7:36 am AKST (16:36 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 1.7 earthquake was recorded 15 km (9 mi) east-northeast of Sutton-Alpine, AK, at 11:58 am AKDT on 11 July 2026 (19:58 UTC), 3.6 km deep.
USGS: 6 km E of Sutton-Alpine, Alaska
91 km (57 mi) NE of Anchorage, AK
- When
- 11:58 am AKDT on 11 July 2026 ()
- Where
- 15 km (9 mi) east-northeast of Sutton-Alpine, AK · earthquakes near Sutton-Alpine
- Magnitude
- M 1.7 (ml)
- Depth
- 3.6 km below the surface
- Felt
- no reports yet
- Nearest
- Matanuska-Susitna Borough, 70 km NW
- Nearest mapped fault
- Castle Mountain fault, 5 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 116 days ago
Earthquake alerts for Sutton-Alpine, AK
Get a notification in this browser when USGS records an earthquake near Sutton-Alpine, AK. No account or email needed.
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 12 km (7 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.
How big was it?
This earthquake released about 11 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 1,400,000× the energy of this one
- Magna, Utah 2020 M 5.7 1,000,000× the energy of this one
- Around the size people start to feel M 3.0 89× the energy of this one
- This earthquake M 1.7 about 11 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 22,000 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 · 25 km WNW of this epicentre
- 5.0 4 km N of Chickaloon, Alaska · 12 km ENE 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 61.7810, -148.6480. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Matanuska-Susitna Borough, AK | 70 km (43 mi) | NW | earthquakes near Matanuska-Susitna Borough |
| Anchorage Municipality, AK | 75 km (47 mi) | SSW | earthquakes near Anchorage Municipality |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
54 earthquakes have been recorded within 50 km since this one.
- 2.0 48 km N of Sutton-Alpine, Alaska
- 1.2 29 km SSE of Chickaloon, Alaska
- 1.8 36 km N of Sutton-Alpine, Alaska
- 1.0 24 km ENE of Knik River, Alaska
- 1.3 15 km SE of Knik River, Alaska
- 1.5 20 km N of Fishhook, Alaska
- 1.6 22 km N of Chickaloon, Alaska
- 1.2 21 km NNE of Chickaloon, Alaska
- 1.5 40 km N of Chickaloon, Alaska
- 2.1 23 km N of Chickaloon, Alaska
- 2.2 24 km N of Chickaloon, Alaska
- 1.9 30 km NNE of Chickaloon, Alaska
- 1.6 45 km NNW of Chickaloon, Alaska
- 2.1 25 km SE of Chickaloon, Alaska
- 0.9 17 km ENE 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.