Earthquake · automatic estimate, may change
M 1.5ml
Earthquake near Salcha, AK
No earthquake was likely felt in Salcha in the 24 hours to 6:08 pm AKST (03:08 UTC). The last one was M 1.8, 6 km (4 mi) SSW, at 4:06 pm AKST on 7 November 2026, estimated intensity II (weak) in town. Every earthquake near Salcha
This page: a magnitude 1.5 earthquake was recorded 12 km (8 mi) west of Salcha, AK, at 12:52 am AKDT on 4 October 2026 (08:52 UTC), 10 km deep. The magnitude and location are an automatic first estimate and may change.
USGS: 12 km W of Salcha, Alaska
- When
- 12:52 am AKDT on 4 October 2026 ()
- Where
- 12 km (8 mi) west of Salcha, AK · earthquakes near Salcha
- Magnitude
- M 1.5 (ml)
- Depth
- 10 km below the surface
- Felt
- no reports yet
- Nearest
- Fairbanks North Star Borough, 36 km ENE
- Nearest mapped fault
- Atsaksovluk fault, under 1 km from its surface trace — near is not the same as on
- Status
- Automatic — a machine’s first estimate, which may change
USGS · last changed by USGS · we first saw it 40 days ago
Earthquake alerts for Salcha, AK
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This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.
At this magnitude and depth it was probably too small to be felt, even directly above it. In Salcha, 12 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: Eielson Air Force Base, North Pole.
How big was it?
This earthquake released about 5.4 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 2,800,000× the energy of this one
- Magna, Utah 2020 M 5.7 2,000,000× the energy of this one
- Around the size people start to feel M 3.0 180× the energy of this one
- This earthquake M 1.5 about 5.4 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 5.3 on 2024-01-19 — about 500,000 times the energy of this one.
Before 2016, the USGS record lists 6 earthquakes of M5 or more within 50 km; the five largest:
- 7.1 Central Alaska · 20 km NE of this epicentre
- 6.0 39 km SW of Salcha, Alaska · 31 km SSW of this epicentre
- 5.7 15 km SSW of Badger, Alaska · 30 km NW of this epicentre
- 5.5 3 km ESE of Farmers Loop, Alaska · 48 km NNW of this epicentre
- 5.5 10 km SSW of Badger, Alaska · 30 km NW 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 64.5180, -147.1600. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Fairbanks North Star Borough, AK | 36 km (22 mi) | ENE | earthquakes near Fairbanks North Star Borough |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
33 earthquakes have been recorded within 50 km since this one.
- 1.4 3 km SSE of Salcha, Alaska
- 1.4 37 km WSW of Salcha, Alaska
- 1.7 5 km SE of Eielson Air Force Base, Alaska
- 1.1 2 km NE of Fairbanks, Alaska
- 1.8 5 km SSW of Salcha, Alaska
- 1.2 5 km NNE of Badger, Alaska
- 1.4 5 km NNW of Badger, Alaska
- 1.4 5 km SSW of Salcha, Alaska
- 1.4 6 km NNE of Badger, Alaska
- 1.4 5 km N of Badger, Alaska
- 1.4 8 km E of Eielson Air Force Base, Alaska
- 1.7 3 km SE of Salcha, Alaska
- 1.5 12 km SSW of Salcha, Alaska
- 1.3 16 km SSW of Salcha, Alaska
- 1.5 9 km S of Eielson Air Force Base, 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 |
|---|---|---|---|
| magnitude | 1.1 | 1.5 |
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.