QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1ml

0 km NNW of Esperance, Washington

· 27 km deep · released about 47 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kitsap County 28 kmIsland County 47 kmKing County 51 kmSnohomish County 53 kmMason County 78 kmPierce County 84 kmJefferson County 87 kmSkagit County 88 kmSan Juan County 97 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
27 km below the surface
Felt
no reports yet
Nearest
Kitsap County, 28 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 486 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 47 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 5.8 320,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 230,000× the energy of this one
  3. Around the size people start to feel M 3.0 20× the energy of this one
  4. This earthquake M 2.1 about 47 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 47.7910, -122.3562. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kitsap County, WA 28 km (17 mi) NE of here earthquakes near Kitsap County
Island County, WA 47 km (29 mi) SSE of here earthquakes near Island County
King County, WA 51 km (32 mi) NW of here earthquakes near King County
Snohomish County, WA 53 km (33 mi) WSW of here earthquakes near Snohomish County
Mason County, WA 78 km (49 mi) NE of here earthquakes near Mason County
Pierce County, WA 84 km (52 mi) N of here earthquakes near Pierce County

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

Aftershocks so far

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

  1. 1.5 3 km SSE of Port Ludlow, Washington
  2. 2.8 5 km W of Gorst, Washington
  3. 1.8 4 km WNW of Gorst, Washington
  4. 1.8 2 km W of Bainbridge Island, Washington
  5. 1.5 4 km NE of Dash Point, Washington
  6. 1.9 1 km NNW of Mirrormont, Washington
  7. 1.7 1 km SE of Shoreline, Washington
  8. 1.5 0 km W of Snohomish, Washington
  9. 1.5 3 km NNW of Bryn Mawr-Skyway, Washington
  10. 1.7 3 km NNW of Bryn Mawr-Skyway, Washington
  11. 1.8 3 km SE of Quilcene, Washington
  12. 1.7 3 km NNW of Warm Beach, Washington
  13. 1.9 4 km SSW of Port Ludlow, Washington
  14. 2.2 3 km SW of Port Ludlow, Washington
  15. 2.0 3 km W of Gorst, 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 4.6 on 2019-07-12 — it released about 4,700 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.