Earthquake · reviewed by a seismologist
M 1.7ml
Earthquake near Butte, AK
No earthquake was likely felt in Butte in the 24 hours to 2:33 pm AKST (23:33 UTC). The last one was M 4.4, 112 km (69 mi) ENE, at 11:11 am AKDT on 30 October 2026, estimated intensity II (weak) in town; 54 felt reports to USGS. Every earthquake near Butte
This page: a magnitude 1.7 earthquake was recorded 50 km (31 mi) east of Butte, AK, at 4:51 am AKST on 6 November 2026 (13:51 UTC), 12 km deep.
USGS: 32 km SE of Chickaloon, Alaska
- When
- 4:51 am AKST on 6 November 2026 ()
- Where
- 50 km (31 mi) east of Butte, AK · earthquakes near Butte
- Magnitude
- M 1.7 (ml)
- Depth
- 12 km below the surface
- Felt
- no reports yet
- Nearest
- Anchorage Municipality, 76 km WSW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 7 days ago
Earthquake alerts for Butte, AK
Get a notification in this browser when USGS records an earthquake near Butte, 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 2 km (1 mi) from the epicentre. In Butte, 50 km away, the estimate is intensity I (not felt). 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.
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 4.8 on 2022-10-06 — about 45,000 times the energy of this one.
Before 2016, the USGS record lists 13 earthquakes of M5 or more within 50 km; the five largest:
- 6.8 31 km SSW of Glacier View, Alaska · 17 km ESE of this epicentre
- 6.4 23 km S of Glacier View, Alaska · 23 km E of this epicentre
- 6.4 37 km SSE of Glacier View, Alaska · 37 km E of this epicentre
- 5.9 15 km N of Glacier View, Alaska · 48 km NNE of this epicentre
- 5.9 42 km S of Glacier View, Alaska · 31 km ESE 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 61.5590, -148.0960. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Anchorage Municipality, AK | 76 km (47 mi) | WSW | earthquakes near Anchorage Municipality |
| Matanuska-Susitna Borough, AK | 108 km (67 mi) | NW | earthquakes near Matanuska-Susitna Borough |
| Chugach Census Area, AK | 157 km (97 mi) | SE | earthquakes near Chugach Census Area |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
11 earthquakes have been recorded within 50 km since this one.
- 1.4 19 km S of Glacier View, Alaska
- 0.9 64 km S of Glacier View, Alaska
- 1.4 18 km N of Chickaloon, Alaska
- 1.1 15 km N of Chickaloon, Alaska
- 1.0 66 km WNW of Tatitlek, Alaska
- 1.6 63 km S of Glacier View, Alaska
- 1.6 24 km ESE of Chickaloon, Alaska
- 1.1 23 km SE of Chickaloon, Alaska
- 1.2 61 km S of Glacier View, Alaska
- 1.3 64 km NW of Tatitlek, Alaska
- 1.4 51 km NE of Whittier, 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.
Revisions
USGS refines a solution as more stations report. Every change we have seen is listed here.
| What changed | From | To | When |
|---|---|---|---|
| review status | automatic | reviewed | |
| location | 33 km SE of Chickaloon, Alaska | 32 km SE of Chickaloon, Alaska | |
| longitude | -148.08 | -148.1 | |
| latitude | 61.55 | 61.56 | |
| depth | 11 | 12.4 | |
| magnitude | 0.8 | 1.7 |
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.