Earthquake · automatic estimate, may change
M 1.7ml
48 km SSE of Igiugig, Alaska
- When
- Magnitude
- M 1.7 (ml)
- Depth
- 0.2 km below the surface
- Felt
- no reports yet
- Nearest
- Bristol Bay Borough, 91 km WSW
- Status
- Automatic — a machine’s first estimate, which may change
USGS · last changed by USGS · we first saw it 142 days ago
This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.
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.
Where
Epicentre 58.9550, -155.4680. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Bristol Bay Borough, AK | 91 km (57 mi) | ENE of here | earthquakes near Bristol Bay Borough |
| Lake and Peninsula Borough, AK | 109 km (68 mi) | NNE of here | earthquakes near Lake and Peninsula Borough |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
8 earthquakes have been recorded within 50 km since this one.
- 1.8 94 km E of King Salmon, Alaska
- 1.8 88 km S of Kokhanok, Alaska
- 2.6 92 km S of Kokhanok, Alaska
- 2.6 88 km E of King Salmon, Alaska
- 1.6 65 km SSE of Igiugig, Alaska
- 2.0 80 km SSW of Kokhanok, Alaska
- 2.4 91 km SSE of Igiugig, Alaska
- 2.3 88 km S of Kokhanok, 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 4.8 on 2019-03-07 — it released about 45,000 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.