QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6ml

7 km ESE of Quilcene, Washington

· 21 km deep · released about 6.6 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kitsap County 21 kmIsland County 40 kmJefferson County 56 kmMason County 59 kmKing County 79 kmSnohomish County 80 kmSan Juan County 81 kmClallam County 90 kmPierce 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 1.6 (ml)
Depth
21 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Kitsap County, 21 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 675 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 6.6 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,300,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,600,000× the energy of this one
  3. Around the size people start to feel M 3.0 140× the energy of this one
  4. This earthquake M 1.6 about 6.6 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 47.8083, -122.7745. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kitsap County, WA 21 km (13 mi) NNW of here earthquakes near Kitsap County
Island County, WA 40 km (25 mi) SSW of here earthquakes near Island County
Jefferson County, WA 56 km (35 mi) E of here earthquakes near Jefferson County
Mason County, WA 59 km (37 mi) NNE of here earthquakes near Mason County
King County, WA 79 km (49 mi) WNW of here earthquakes near King County
Snohomish County, WA 80 km (50 mi) WSW of here earthquakes near Snohomish County

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

Aftershocks so far

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

  1. 2.8 16 km SSW of River Road, Washington
  2. 1.8 5 km WNW of Bainbridge Island, Washington
  3. 2.9 0 km NW of Keyport, Washington
  4. 1.6 5 km SE of Port Ludlow, Washington
  5. 1.5 3 km S of Port Ludlow, Washington
  6. 2.1 8 km E of Port Townsend, Washington
  7. 1.7 7 km ENE of Manchester, Washington
  8. 2.5 6 km SE of Coupeville, Washington
  9. 2.5 10 km SW of Seabeck, Washington
  10. 2.0 3 km SSE of Port Ludlow, Washington
  11. 1.5 6 km ESE of Quilcene, Washington
  12. 1.8 2 km NNE of Keyport, Washington
  13. 1.8 4 km WSW of Clinton, Washington
  14. 1.9 3 km SE of Gorst, Washington
  15. 1.6 1 km NNW of Boulevard Park, 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 4.3 on 2023-10-09 — it released about 13,000 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.