QuakeIndex

Earthquake · reviewed by a seismologist

M 2.4ml

40 km SE of Ucluelet, Canada

· 32 km deep · released about 120 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Clallam 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 2.4 (ml)
Depth
32 km below the surface
Felt
no reports yet
Nearest
Clallam County, 113 km SE
Nearest mapped fault
Cascadia fold and fault belt, 25 km from its surface trace — near is not the same as on
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1346 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 120 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.4 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 130,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 89,000× the energy of this one
  3. Around the size people start to feel M 3.0 7.9× the energy of this one
  4. This earthquake M 2.4 about 120 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 48.7023, -125.1276. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Clallam County, WA 113 km (70 mi) NW of here earthquakes near Clallam County
Jefferson County, WA 155 km (96 mi) NW of here earthquakes near Jefferson County

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

Aftershocks so far

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

  1. 3.2 21 km SSW of Ucluelet, Canada
  2. 1.6 39 km NNW of Neah Bay, Washington
  3. 2.3 33 km NNW of Neah Bay, Washington
  4. 2.5 23 km W of Neah Bay, Washington
  5. 1.6 7 km WNW of Neah Bay, Washington
  6. 1.8 10 km N of Neah Bay, Washington
  7. 1.9 28 km WSW of Neah Bay, Washington
  8. 1.6 33 km NNW of Neah Bay, Washington
  9. 1.8 10 km WNW of Neah Bay, Washington
  10. 1.7 26 km ESE of Ucluelet, Canada
  11. 1.6 5 km N of Neah Bay, Washington
  12. 2.3 23 km SE of Ucluelet, Canada
  13. 3.0 19 km E of Ucluelet, Canada
  14. 1.7 35 km NNW of Neah Bay, Washington
  15. 1.7 13 km SE of Ucluelet, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.5 on 2020-01-24 — it released about 1,400 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

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