QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5mb_lg

2 km SSW of Saint Regis Falls, New York

· 5.0 km deep · released about 170 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Franklin County 20 kmSt. Lawrence County 45 kmClinton County 68 kmEssex County 86 kmGrand Isle County 100 kmHamilton County 110 kmChittenden County 119 kmLewis County 120 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 2.5 (mb_lg)
Depth
5.0 km below the surface
Felt
40 reports · strongest reported intensity IV
Nearest
Franklin County, 20 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1457 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 40 people have reported feeling it to USGS.

How big was it?

This earthquake released about 170 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 89,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 63,000× the energy of this one
  3. Around the size people start to feel M 3.0 5.6× the energy of this one
  4. This earthquake M 2.5 about 170 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 44.6505, -74.5534. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Franklin County, NY 20 km (13 mi) WNW of here earthquakes near Franklin County
St. Lawrence County, NY 45 km (28 mi) ENE of here earthquakes near St. Lawrence County
Clinton County, NY 68 km (42 mi) W of here earthquakes near Clinton County
Essex County, NY 86 km (53 mi) NW of here earthquakes near Essex County
Grand Isle County, VT 100 km (62 mi) W of here earthquakes near Grand Isle County
Hamilton County, NY 110 km (69 mi) N of here earthquakes near Hamilton 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. 1.5 14 km N of Tupper Lake, New York
  4. 1.6 1 km S of Massena, New York
  5. 2.2 8 km W of Saint Regis Falls, New York
  6. 2.5 6 km SSE of Fort Covington Hamlet, New York
  7. 1.6 16 km NNW of Tupper Lake, New York
  8. 1.9 8 km ESE of Fort Covington Hamlet, New York
  9. 1.6 Ontario-Quebec border region, Canada
  10. 2.1 7 km SW of Cornwall, Canada
  11. 1.6 1 km SE of Saint Regis Falls, 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

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