Earthquake · reviewed by a seismologist
M 2.7mb_lg
4 km NNW of Chazy, New York
- When
- Magnitude
- M 2.7 (mb_lg)
- Depth
- 10.0 km below the surface
- Felt
- 240 reports · strongest reported intensity III
- Nearest
- Grand Isle County, 18 km SE
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 268 days ago
This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 240 people have reported feeling it to USGS.
How big was it?
This earthquake released about 340 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.7 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 45,000× the energy of this one
- Magna, Utah 2020 M 5.7 32,000× the energy of this one
- Around the size people start to feel M 3.0 2.8× the energy of this one
- This earthquake M 2.7 about 340 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 44.9252, -73.4557. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Grand Isle County, VT | 18 km (11 mi) | NW of here | earthquakes near Grand Isle County |
| Clinton County, NY | 27 km (17 mi) | NE of here | earthquakes near Clinton County |
| Franklin County, VT | 44 km (27 mi) | W of here | earthquakes near Franklin County |
| Chittenden County, VT | 60 km (37 mi) | NNW of here | earthquakes near Chittenden County |
| Lamoille County, VT | 74 km (46 mi) | WNW of here | earthquakes near Lamoille County |
| Franklin County, NY | 77 km (48 mi) | ENE of here | earthquakes near Franklin County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
3 earthquakes have been recorded within 50 km since this one.
- 1.6 8 km SSW of Saint-Édouard, Canada
- 2.0 3 km WNW of Keeseville, New York
- 1.9 6 km WNW of Morrisonville, New York
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.