QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6ml

11 km WNW of Sekiu, Washington

· 41 km deep · released about 6.4 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Clallam County 47 kmJefferson County 88 kmSan Juan County 103 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 1.6 (ml)
Depth
41 km below the surface
Felt
no reports yet
Nearest
Clallam County, 47 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 566 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 6.4 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,400,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,700,000× the energy of this one
  3. Around the size people start to feel M 3.0 150× the energy of this one
  4. This earthquake M 1.6 about 6.4 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 48.2925, -124.4557. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Clallam County, WA 47 km (29 mi) WNW of here earthquakes near Clallam County
Jefferson County, WA 88 km (55 mi) NW of here earthquakes near Jefferson County
San Juan County, WA 103 km (64 mi) WSW of here earthquakes near San Juan County
Mason County, WA 142 km (88 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

28 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. 1.5 19 km NNW of Forks, Washington
  4. 2.1 26 km W of Forks, Washington
  5. 2.3 33 km NNW of Neah Bay, Washington
  6. 2.5 23 km W of Neah Bay, Washington
  7. 1.6 11 km E of Forks, Washington
  8. 1.6 12 km SW of Neah Bay, Washington
  9. 1.6 7 km WNW of Neah Bay, Washington
  10. 1.8 10 km N of Neah Bay, Washington
  11. 1.9 28 km WSW of Neah Bay, Washington
  12. 1.6 33 km NNW of Neah Bay, Washington
  13. 1.8 10 km WNW of Neah Bay, Washington
  14. 1.6 4 km WSW of Forks, Washington
  15. 3.7 17 km NNW of Sekiu, 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.