QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1ml

7 km SW of Cornwall, Canada

· 10 km deep · released about 43 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Franklin County 55 kmSt. Lawrence County 57 kmClinton County 88 kmGrand Isle County 118 km
Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
Magnitude
M 2.1 (ml)
Depth
10 km below the surface
Felt
10 reports · strongest reported intensity IV
Nearest
Franklin County, 55 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1246 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 10 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.

  1. Mineral, Virginia 2011 M 5.8 350,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 250,000× the energy of this one
  3. Around the size people start to feel M 3.0 22× the energy of this one
  4. 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 44.9585, -74.7849. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Franklin County, NY 55 km (34 mi) NW of here earthquakes near Franklin County
St. Lawrence County, NY 57 km (35 mi) NNE of here earthquakes near St. Lawrence County
Clinton County, NY 88 km (55 mi) WNW of here earthquakes near Clinton County
Grand Isle County, VT 118 km (73 mi) W of here earthquakes near Grand Isle County
Essex County, NY 124 km (77 mi) NW of here earthquakes near Essex County
Jefferson County, NY 147 km (91 mi) NE of here earthquakes near Jefferson County

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

11 earthquakes have been recorded within 50 km since this one.

  1. 1.6 5 km S of Fort Covington Hamlet, New York
  2. 1.6 6 km ESE of Fort Covington Hamlet, New York
  3. 1.6 1 km S of Massena, New York
  4. 2.2 8 km W of Saint Regis Falls, New York
  5. 2.5 6 km SSE of Fort Covington Hamlet, New York
  6. 1.8 6 km WNW of Huntingdon, Canada
  7. 2.1 8 km WNW of Huntingdon, Canada
  8. 3.1 6 km WNW of Huntingdon, Canada
  9. 2.8 8 km NNW of Canton, New York
  10. 1.9 8 km ESE of Fort Covington Hamlet, New York
  11. 1.6 Ontario-Quebec border region, Canada

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

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.