QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6ml

St. Lawrence Valley region, Quebec, Canada

· 12 km deep · released about 240 lb of TNT

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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 2.6 (ml)
Depth
12 km below the surface
Felt
1 report · strongest reported intensity II
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1858 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 240 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 63,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 45,000× the energy of this one
  3. Around the size people start to feel M 3.0 4× the energy of this one
  4. This earthquake M 2.6 about 240 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 47.1434, -70.6889. Map © OpenStreetMap contributors.

Aftershocks so far

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

  1. 2.0 18 km N of St-Jean-Port-Joli, Canada
  2. 1.7 11 km E of Baie-Saint-Paul, Canada
  3. 2.3 11 km NNE of Montmagny, Canada
  4. 1.6 17 km WNW of St-Jean-Port-Joli, Canada
  5. 1.9 6 km S of Beaupré, Canada
  6. 1.9 5 km ESE of Baie-Saint-Paul, Canada
  7. 2.7 1 km SW of Beaupré, Canada
  8. 1.6 3 km NE of Baie-Saint-Paul, Canada
  9. 1.9 8 km NNE of St-Jean-Port-Joli, Canada
  10. 2.0 9 km ESE of Château-Richer, Canada
  11. 2.1 6 km ESE of Baie-Saint-Paul, Canada
  12. 2.3 16 km SE of L'Ange-Gardien, Canada
  13. 2.1 17 km W of La Pocatière, Canada
  14. 1.5 9 km SSE of Baie-Saint-Paul, Canada
  15. 1.5 14 km S of Baie-Saint-Paul, 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.