QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3ml

15 km SW of River Road, Washington

· 41 km deep · released about 85 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Jefferson County 26 kmIsland County 49 kmClallam County 51 kmKitsap County 57 kmSan Juan County 63 kmMason County 67 kmGrays Harbor County 103 kmSnohomish County 111 kmThurston County 117 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 2.3 (ml)
Depth
41 km below the surface
Felt
no reports yet
Nearest
Jefferson County, 26 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2817 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 85 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 180,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 130,000× the energy of this one
  3. Around the size people start to feel M 3.0 11× the energy of this one
  4. This earthquake M 2.3 about 85 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 47.9508, -123.2477. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Jefferson County, WA 26 km (16 mi) NE of here earthquakes near Jefferson County
Island County, WA 49 km (30 mi) WSW of here earthquakes near Island County
Clallam County, WA 51 km (32 mi) ESE of here earthquakes near Clallam County
Kitsap County, WA 57 km (35 mi) NW of here earthquakes near Kitsap County
San Juan County, WA 63 km (39 mi) S of here earthquakes near San Juan County
Mason County, WA 67 km (42 mi) N of here earthquakes near Mason 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. 1.6 8 km NE of Jamestown, Washington
  2. 2.0 7 km NNE of Jamestown, Washington
  3. 2.6 18 km WSW of Quilcene, Washington
  4. 1.8 4 km SSW of Port Ludlow, Washington
  5. 2.2 16 km NNW of Jamestown, Washington
  6. 1.7 26 km NW of Hoodsport, Washington
  7. 2.2 5 km SSW of Port Ludlow, Washington
  8. 1.6 10 km SW of Brinnon, Washington
  9. 1.7 5 km SSW of Port Ludlow, Washington
  10. 1.6 6 km SW of Port Hadlock-Irondale, Washington
  11. 1.8 5 km SW of Port Ludlow, Washington
  12. 1.6 4 km W of Seabeck, Washington
  13. 1.9 10 km WSW of Port Angeles, Washington
  14. 1.8 6 km WNW of Coupeville, Washington
  15. 1.6 13 km W of Coupeville, 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 2018-11-19 — it released about 470 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.