QuakeIndex

explosion · reviewed by a seismologist

M 2.1ml

7 km S of Okanagan Falls, Canada

· -0.4 km deep · released about 41 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Okanogan County 83 kmFerry County 117 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
-0.4 km below the surface
Felt
no reports yet
Nearest
Okanogan County, 83 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 966 days ago

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

USGS catalogues this as explosion, not an earthquake.

How big was it?

This earthquake released about 41 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 5.8 370,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 260,000× the energy of this one
  3. Around the size people start to feel M 3.0 23× the energy of this one
  4. This earthquake M 2.1 about 41 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 49.2848, -119.5577. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Okanogan County, WA 83 km (52 mi) N of here earthquakes near Okanogan County
Ferry County, WA 117 km (73 mi) NW of here earthquakes near Ferry County

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

Aftershocks so far

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

  1. 2.9 18 km ENE of Okanagan Falls, Canada
  2. 2.2 31 km W of Oliver, Canada
  3. 3.4 4 km N of Summerland, Canada
  4. 1.7 9 km WNW of Oliver, Canada
  5. 3.4 34 km W of Okanagan Falls, Canada
  6. 1.8 9 km SSE of Okanagan Falls, Canada
  7. 1.6 7 km ESE of Okanagan Falls, Canada
  8. 2.3 8 km SSE of Okanagan Falls, Canada
  9. 1.6 29 km WSW of Oliver, Canada
  10. 2.0 6 km NW of Osoyoos, Canada
  11. 2.0 6 km WNW of Osoyoos, Canada
  12. 2.7 11 km ESE of Penticton, Canada
  13. 2.4 26 km WSW of Penticton, 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.