QuakeIndex

Earthquake · reviewed by a seismologist

M 3.5ml

26 km WNW of Forks, Washington

· 37 km deep · released about 2.6 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Clallam County 62 kmJefferson County 92 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 3.5 (ml)
Depth
37 km below the surface
Felt
10 reports · strongest reported intensity III
Measured shaking
intensity II (ShakeMap)
Nearest
Clallam County, 62 km E
Nearest mapped fault
Cascadia fold and fault belt, 12 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 1402 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 10 people have reported feeling it to USGS.

How big was it?

This earthquake released about 2.6 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.5 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 65,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 2,900× the energy of this one
  3. Magna, Utah 2020 M 5.7 2,100× the energy of this one
  4. This earthquake M 3.5 about 2.6 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 5.4× more

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 48.0465, -124.7150. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Clallam County, WA 62 km (38 mi) W of here earthquakes near Clallam County
Jefferson County, WA 92 km (57 mi) WNW of here earthquakes near Jefferson County
Grays Harbor County, WA 123 km (77 mi) NNW of here earthquakes near Grays Harbor County
San Juan County, WA 130 km (81 mi) WSW of here earthquakes near San Juan County
Mason County, WA 139 km (86 mi) NW of here earthquakes near Mason County

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

Aftershocks so far

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

  1. 1.6 12 km SW of Neah Bay, Washington
  2. 1.6 7 km WNW of Neah Bay, Washington
  3. 1.6 20 km N of Queets, Washington
  4. 1.8 10 km N of Neah Bay, Washington
  5. 1.9 28 km WSW of Neah Bay, Washington
  6. 1.8 10 km WNW of Neah Bay, Washington
  7. 1.6 4 km WSW of Forks, Washington
  8. 3.7 17 km NNW of Sekiu, Washington
  9. 1.9 21 km NNW of Forks, Washington
  10. 1.8 21 km NNW of Forks, Washington
  11. 1.6 5 km N of Neah Bay, Washington
  12. 1.6 4 km WSW of Forks, Washington
  13. 1.8 18 km NNW of Forks, Washington
  14. 1.6 2 km WSW of Forks, Washington
  15. 1.7 13 km WSW of Neah Bay, Washington

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.