QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1ml

3 km SSE of Quilcene, Washington

· 23 km deep · released about 38 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kitsap County 23 kmIsland County 43 kmJefferson County 51 kmMason County 55 kmSan Juan County 81 kmKing County 83 kmClallam County 85 kmSnohomish County 86 kmThurston County 96 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 2.1 (ml)
Depth
23 km below the surface
Felt
3 reports · strongest reported intensity II
Nearest
Kitsap County, 23 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 314 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 3 people have reported feeling it to USGS.

How big was it?

This earthquake released about 38 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 390,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 280,000× the energy of this one
  3. Around the size people start to feel M 3.0 25× the energy of this one
  4. This earthquake M 2.1 about 38 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 47.7950, -122.8500. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kitsap County, WA 23 km (14 mi) NW of here earthquakes near Kitsap County
Island County, WA 43 km (26 mi) SSW of here earthquakes near Island County
Jefferson County, WA 51 km (31 mi) E of here earthquakes near Jefferson County
Mason County, WA 55 km (34 mi) NNE of here earthquakes near Mason County
San Juan County, WA 81 km (51 mi) SSE of here earthquakes near San Juan County
King County, WA 83 km (52 mi) WNW of here earthquakes near King County

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

Aftershocks so far

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

  1. 1.8 1 km E of Enetai, Washington
  2. 1.7 2 km NW of Manchester, Washington
  3. 2.0 6 km WNW of Lofall, Washington
  4. 1.7 5 km SW of Port Ludlow, Washington
  5. 1.7 10 km S of Seabeck, Washington
  6. 2.6 7 km WNW of Lofall, Washington
  7. 1.9 6 km ENE of Lofall, Washington
  8. 2.2 8 km ENE of Quilcene, Washington
  9. 1.5 2 km N of Edmonds, Washington
  10. 1.6 3 km WNW of Shoreline, Washington
  11. 1.7 22 km WSW of Quilcene, Washington
  12. 1.6 13 km WNW of Belfair, Washington
  13. 1.7 5 km SW of Port Ludlow, Washington
  14. 1.7 5 km ESE of Coupeville, Washington
  15. 1.6 10 km SSE of Port Angeles East, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.1 on 2017-02-23 — it released about 1,100 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.