Earthquake · reviewed by a seismologist
M 2.1ml
6 km N of Upton, Maine
- When
- Magnitude
- M 2.1 (ml)
- Depth
- 9.3 km below the surface
- Felt
- 4 reports · strongest reported intensity III
- Nearest
- Coos County, 24 km WSW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 585 days ago
This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 4 people have reported feeling it to USGS.
How big was it?
This earthquake released about 43 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 350,000× the energy of this one
- Magna, Utah 2020 M 5.7 250,000× the energy of this one
- Around the size people start to feel M 3.0 22× the energy of this one
- This earthquake M 2.1 about 43 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 44.7517, -71.0187. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Coos County, NH | 24 km (15 mi) | ENE of here | earthquakes near Coos County |
| Oxford County, ME | 36 km (23 mi) | NW of here | earthquakes near Oxford County |
| Franklin County, ME | 54 km (33 mi) | WSW of here | earthquakes near Franklin County |
| Essex County, VT | 56 km (35 mi) | E of here | earthquakes near Essex County |
| Androscoggin County, ME | 91 km (57 mi) | NW of here | earthquakes near Androscoggin County |
| Caledonia County, VT | 92 km (57 mi) | ENE of here | earthquakes near Caledonia County |
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.
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.