Earthquake · reviewed by a seismologist
M 1.3ml
91 km NNW of Karluk, Alaska
- When
- Magnitude
- M 1.3 (ml)
- Depth
- 108 km below the surface
- Felt
- no reports yet
- Nearest
- Kodiak Island Borough, 90 km SE
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 28 hours ago
A magnitude 1.3 earthquake was recorded 91 km NNW of Karluk, Alaska at 21:01 UTC on 2026-10-06. 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. 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 2.7 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.3 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 5,600,000× the energy of this one
- Magna, Utah 2020 M 5.7 4,000,000× the energy of this one
- Around the size people start to feel M 3.0 350× the energy of this one
- This earthquake M 1.3 about 2.7 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 5.2 on 2019-01-22 — about 710,000 times the energy of this one.
Before 2016, the USGS record lists 56 earthquakes of M5 or more within 50 km; the five largest:
- 7.0 Event 36 Novarupta-Mount Katmai area, Alaska Peninsula · 13 km WSW of this epicentre
- 6.8 Event 37 Novarupta-Mount Katmai area, Alaska Peninsula · 13 km WSW of this epicentre
- 6.8 Event 48 Novarupta-Mount Katmai area, Alaska Peninsula · 25 km WSW of this epicentre
- 6.6 Event 39 Novarupta-Mount Katmai area, Alaska Peninsula · 13 km WSW of this epicentre
- 6.6 74 km S of Kokhanok, Alaska · 46 km N 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 58.3660, -154.8110. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Kodiak Island Borough, AK | 90 km (56 mi) | SE | earthquakes near Kodiak Island Borough |
| Lake and Peninsula Borough, AK | 98 km (61 mi) | WSW | earthquakes near Lake and Peninsula Borough |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
1 earthquake has been recorded within 50 km since this one.
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 | |
| longitude | -154.81 | -154.81 | |
| latitude | 58.37 | 58.37 | |
| depth | 107.7 | 107.5 | |
| magnitude | 1.1 | 1.3 | |
| location | 92 km NNW of Karluk, Alaska | 91 km NNW of Karluk, Alaska | |
| longitude | -154.8 | -154.81 | |
| latitude | 58.37 | 58.37 | |
| depth | 107.6 | 107.7 | |
| magnitude | 0.7 | 1.1 |
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.