Earthquake · reviewed by a seismologist
M 2.3ml
54 km E of Rockport, Massachusetts
- When
- Magnitude
- M 2.3 (ml)
- Depth
- 9.6 km below the surface
- Felt
- 9 reports · strongest reported intensity III
- Nearest
- Essex County, 74 km W
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 938 days ago
This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 9 people have reported feeling it to USGS.
How big was it?
This earthquake released about 85 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 180,000× the energy of this one
- Magna, Utah 2020 M 5.7 130,000× the energy of this one
- Around the size people start to feel M 3.0 11× the energy of this one
- This earthquake M 2.3 about 85 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 42.7324, -69.9644. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Essex County, MA | 74 km (46 mi) | E of here | earthquakes near Essex County |
| York County, ME | 96 km (60 mi) | SE of here | earthquakes near York County |
| Rockingham County, NH | 97 km (60 mi) | ESE of here | earthquakes near Rockingham County |
| Suffolk County, MA | 97 km (60 mi) | ENE of here | earthquakes near Suffolk County |
| Plymouth County, MA | 105 km (65 mi) | NE of here | earthquakes near Plymouth County |
| Strafford County, NH | 107 km (67 mi) | SE of here | earthquakes near Strafford 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.