Earthquake · reviewed by a seismologist
M 1.5ml
Earthquake near Salcha, AK
No earthquake was likely felt in Salcha in the 24 hours to 4:17 pm AKST (01:17 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 6 km (3 mi) south-southwest of Salcha, AK, at 8:34 am AKST on 29 January 2024 (17:34 UTC), 9.5 km deep. 1 person has reported feeling it to USGS.
USGS: 5 km SSW of Salcha, Alaska
- When
- 8:34 am AKST on 29 January 2024 ()
- Where
- 6 km (3 mi) south-southwest of Salcha, AK · earthquakes near Salcha
- Magnitude
- M 1.5 (ml)
- Depth
- 9.5 km below the surface
- Felt
- 1 report · strongest reported intensity II
- Nearest
- Fairbanks North Star Borough, 30 km NE
- Nearest mapped fault
- Atsaksovluk fault, 3 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 998 days ago
Earthquake alerts for Salcha, AK
Get a notification in this browser when USGS records an earthquake near Salcha, 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 3 km (2 mi) from the epicentre. In Salcha, 6 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.
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 4 earthquakes of M5 or more within 50 km:
- 7.1 Central Alaska · 18 km NNE of this epicentre
- 6.0 39 km SW of Salcha, Alaska · 34 km SW of this epicentre
- 5.7 15 km SSW of Badger, Alaska · 42 km WNW of this epicentre
- 5.5 10 km SSW of Badger, Alaska · 41 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 64.4754, -146.9306. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Fairbanks North Star Borough, AK | 30 km (19 mi) | NE | earthquakes near Fairbanks North Star Borough |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
60 earthquakes have been recorded within 50 km since this one.
- 2.1 6 km SSW of Salcha, Alaska
- 2.0 27 km SW of Eielson Air Force Base, Alaska
- 2.4 6 km S of Salcha, Alaska
- 1.9 3 km SSW of Salcha, Alaska
- 1.6 3 km SSW of Salcha, Alaska
- 1.7 29 km WSW of Salcha, Alaska
- 1.8 2 km SSW of Salcha, Alaska
- 2.0 6 km SW of Salcha, Alaska
- 1.8 3 km SSW of Salcha, Alaska
- 2.3 3 km SSW of Salcha, Alaska
- 1.5 4 km S of Salcha, Alaska
- 1.5 3 km SSW of Salcha, Alaska
- 2.6 17 km SW of Salcha, Alaska
- 2.3 7 km ENE of Eielson Air Force Base, Alaska
- 1.5 5 km S of Salcha, 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.