QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

18 km NNW of Forks, Washington

· 1.2 km deep · released about 13 lb of TNT

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10 km30 km60 km120 km N Clallam County 44 kmJefferson County 78 kmSan Juan County 111 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 1.8 (ml)
Depth
1.2 km below the surface
Felt
no reports yet
Nearest
Clallam County, 44 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 476 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 13 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,200,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 840,000× the energy of this one
  3. Around the size people start to feel M 3.0 75× the energy of this one
  4. This earthquake M 1.8 about 13 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 48.1058, -124.4758. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Clallam County, WA 44 km (27 mi) W of here earthquakes near Clallam County
Jefferson County, WA 78 km (49 mi) WNW of here earthquakes near Jefferson County
San Juan County, WA 111 km (69 mi) WSW of here earthquakes near San Juan County
Grays Harbor County, WA 121 km (75 mi) NNW of here earthquakes near Grays Harbor County
Mason County, WA 129 km (80 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

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

  1. 0.6 12 km SSE of Neah Bay, Washington
  2. 0.7 12 km SSE of Neah Bay, Washington
  3. 1.6 16 km NNW of Queets, Washington
  4. 1.5 19 km NNW of Forks, Washington
  5. 2.1 26 km W of Forks, Washington
  6. 2.5 23 km W of Neah Bay, Washington
  7. 1.7 12 km S of Forks, Washington
  8. 1.6 11 km E of Forks, Washington
  9. 1.6 12 km SW of Neah Bay, Washington
  10. 1.6 7 km WNW of Neah Bay, Washington
  11. 1.6 20 km N of Queets, Washington
  12. 1.8 10 km N of Neah Bay, Washington
  13. 1.9 28 km WSW of Neah Bay, Washington
  14. 1.8 10 km WNW of Neah Bay, Washington
  15. 1.6 4 km WSW 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.