QuakeIndex

Earthquake · reviewed by a seismologist

M 2.0ml

Alberta, Canada

· 23 km deep · released about 30 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Glacier County 52 kmToole County 98 kmPondera County 113 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 2.0 (ml)
Depth
23 km below the surface
Felt
no reports yet
Nearest
Glacier County, 52 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1069 days ago

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

How big was it?

This earthquake released about 30 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 500,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 350,000× the energy of this one
  3. Around the size people start to feel M 3.0 32× the energy of this one
  4. This earthquake M 2.0 about 30 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 49.1625, -112.8163. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Glacier County, MT 52 km (33 mi) NNE of here earthquakes near Glacier County
Toole County, MT 98 km (61 mi) NW of here earthquakes near Toole County
Pondera County, MT 113 km (70 mi) NNW of here earthquakes near Pondera County
Flathead County, MT 132 km (82 mi) NE of here earthquakes near Flathead County

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

Aftershocks so far

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

  1. 2.3 40 km SSE of Magrath, Canada
  2. 2.3 6 km SSW of Cardston, Canada
  3. 1.7 21 km SSE of Cardston, Canada
  4. 2.0 43 km NNW of Santa Rita, Montana
  5. 2.4 38 km NNW of Santa Rita, Montana
  6. 1.9 40 km SSE of Magrath, Canada
  7. 1.5 20 km NW of Santa Rita, Montana
  8. 2.7 17 km NNW of Santa Rita, Montana
  9. 2.8 8 km S of Cardston, Canada
  10. 1.7 14 km S of Cardston, 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.