QuakeIndex

Earthquake · reviewed by a seismologist

M 4.1ml

11 km NE of Hoodsport, Washington

· 15 km deep · released about 21 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mason County 18 kmKitsap County 34 kmJefferson County 52 kmThurston County 62 kmGrays Harbor County 72 kmIsland County 80 kmPierce County 82 kmKing County 90 kmClallam County 95 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 4.1 (ml)
Depth
15 km below the surface
Felt
3359 reports · strongest reported intensity IV
Measured shaking
intensity IV (ShakeMap)
USGS impact alert
green
Tsunami
USGS flagged this event for tsunami evaluation. Follow tsunami.gov for official messages.
Nearest
Mason County, 18 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3007 days ago

This was a light earthquake. It is usually felt clearly nearby and can rattle windows and dishes, but damage is uncommon. 3359 people have reported feeling it to USGS.

How big was it?

This earthquake released about 21 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 5.1 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 8,200× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 370× the energy of this one
  3. Magna, Utah 2020 M 5.7 260× the energy of this one
  4. This earthquake M 4.1 about 21 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 43× more

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 47.4802, -123.0350. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mason County, WA 18 km (11 mi) NE of here earthquakes near Mason County
Kitsap County, WA 34 km (21 mi) WSW of here earthquakes near Kitsap County
Jefferson County, WA 52 km (32 mi) SE of here earthquakes near Jefferson County
Thurston County, WA 62 km (39 mi) NNW of here earthquakes near Thurston County
Grays Harbor County, WA 72 km (45 mi) NE of here earthquakes near Grays Harbor County
Island County, WA 80 km (50 mi) SSW of here earthquakes near Island County

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

Aftershocks so far

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

  1. 1.6 8 km WNW of Gorst, Washington
  2. 1.8 2 km W of Erlands Point-Kitsap Lake, Washington
  3. 2.4 5 km WSW of Erlands Point-Kitsap Lake, Washington
  4. 2.0 7 km NE of Brinnon, Washington
  5. 1.7 10 km NNW of Belfair, Washington
  6. 1.8 28 km ENE of Amanda Park, Washington
  7. 3.7 2 km NNW of Quilcene, Washington
  8. 1.7 5 km SSE of Suquamish, Washington
  9. 1.9 2 km ENE of Enetai, Washington
  10. 2.0 0 km NNE of Enetai, Washington
  11. 1.6 0 km SW of Enetai, Washington
  12. 1.8 0 km WNW of Enetai, Washington
  13. 1.8 1 km SE of Enetai, Washington
  14. 2.8 1 km ESE of Enetai, Washington
  15. 1.6 0 km SE of Enetai, 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.