QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9ml

near the coast of Washington

· 28 km deep · released about 720 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Clallam County 44 kmJefferson County 68 kmGrays Harbor County 101 kmMason County 113 kmSan Juan County 116 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 2.9 (ml)
Depth
28 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Clallam County, 44 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1492 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 720 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 21,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 15,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.3× the energy of this one
  4. This earthquake M 2.9 about 720 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 47.9312, -124.4168. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Clallam County, WA 44 km (27 mi) WSW of here earthquakes near Clallam County
Jefferson County, WA 68 km (42 mi) WNW of here earthquakes near Jefferson County
Grays Harbor County, WA 101 km (63 mi) NNW of here earthquakes near Grays Harbor County
Mason County, WA 113 km (70 mi) NW of here earthquakes near Mason County
San Juan County, WA 116 km (72 mi) WSW of here earthquakes near San Juan County
Thurston County, WA 163 km (101 mi) NW of here earthquakes near Thurston County

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

Aftershocks so far

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

  1. 1.9 21 km NNW of Forks, Washington
  2. 1.8 21 km NNW of Forks, Washington
  3. 1.6 4 km WSW of Forks, Washington
  4. 1.6 31 km NNW of Amanda Park, Washington
  5. 1.8 18 km NNW of Forks, Washington
  6. 1.6 2 km WSW of Forks, Washington
  7. 2.5 8 km ESE of Forks, Washington
  8. 1.9 10 km E of Forks, Washington
  9. 2.1 8 km SE of Neah Bay, Washington
  10. 1.6 11 km WNW of Sekiu, Washington
  11. 1.7 33 km WNW of Queets, Washington
  12. 2.0 12 km ESE of Neah Bay, Washington
  13. 1.8 16 km WNW of Forks, Washington
  14. 1.6 27 km W of Forks, Washington
  15. 2.5 15 km ESE of Forks, 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.