Earthquake · automatic estimate, may change
M 3.0ml
6 km WSW of Point MacKenzie, Alaska
- When
- Magnitude
- M 3.0 (ml)
- Depth
- 19 km below the surface
- Felt
- 9 reports · strongest reported intensity III
- Measured shaking
- intensity II (ShakeMap)
- Nearest
- Anchorage Municipality, 47 km ESE
- Status
- Automatic — a machine’s first estimate, which may change
USGS · last changed by USGS · we first saw it 2696 days ago
This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 9 people have reported feeling it to USGS.
How big was it?
This earthquake released about 950 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.0 would have released about 32 times as much.
- Northridge, California 1994 M 6.7 350,000× the energy of this one
- Mineral, Virginia 2011 M 5.8 16,000× the energy of this one
- Magna, Utah 2020 M 5.7 11,000× the energy of this one
- This earthquake M 3.0 about 950 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.
Where
Epicentre 61.3389, -150.0916. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Anchorage Municipality, AK | 47 km (29 mi) | WNW of here | earthquakes near Anchorage Municipality |
| Matanuska-Susitna Borough, AK | 108 km (67 mi) | SSW of here | earthquakes near Matanuska-Susitna Borough |
| Kenai Peninsula Borough, AK | 162 km (101 mi) | NE of here | earthquakes near Kenai Peninsula Borough |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
59 earthquakes have been recorded within 50 km since this one.
- 1.7 4 km S of Big Lake, Alaska
- 3.1 4 km WNW of Point MacKenzie, Alaska
- 2.6 2 km SE of Big Lake, Alaska
- 1.6 6 km NW of Point MacKenzie, Alaska
- 2.0 1 km WSW of Big Lake, Alaska
- 1.8 5 km WNW of Point MacKenzie, Alaska
- 1.6 5 km SSE of Big Lake, Alaska
- 1.6 5 km W of Big Lake, Alaska
- 1.7 4 km NW of Anchorage, Alaska
- 1.7 5 km NNW of Point MacKenzie, Alaska
- 1.7 4 km WSW of Point MacKenzie, Alaska
- 1.7 6 km W of Point MacKenzie, Alaska
- 2.3 4 km E of Susitna, Alaska
- 1.7 10 km NW of Point MacKenzie, Alaska
- 1.8 12 km N of Houston, 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.
For this area
The largest earthquake within 50 km in our catalogue was M 7.1 on 2018-11-30 — it released about 1,400,000 times the energy of this one.
From the QuakeIndex catalogue, built from the USGS FDSN event service.
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.