QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

Puget Sound region, Washington

· 26 km deep · released about 9.3 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kitsap County 1 kmMason County 50 kmIsland County 59 kmKing County 63 kmJefferson County 69 kmPierce County 74 kmThurston County 78 kmSnohomish County 81 kmSan Juan County 104 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 1.7 (ml)
Depth
26 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Kitsap County, 1 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1265 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 9.3 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,600,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,100,000× the energy of this one
  3. Around the size people start to feel M 3.0 100× the energy of this one
  4. This earthquake M 1.7 about 9.3 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 47.6273, -122.6488. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kitsap County, WA 1 km (1 mi) S of here earthquakes near Kitsap County
Mason County, WA 50 km (31 mi) NE of here earthquakes near Mason County
Island County, WA 59 km (37 mi) S of here earthquakes near Island County
King County, WA 63 km (39 mi) WNW of here earthquakes near King County
Jefferson County, WA 69 km (43 mi) ESE of here earthquakes near Jefferson County
Pierce County, WA 74 km (46 mi) NNW of here earthquakes near Pierce County

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

Aftershocks so far

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

  1. 2.1 3 km SSE of Quilcene, Washington
  2. 2.1 10 km WNW of Longbranch, Washington
  3. 1.5 2 km NNW of Federal Way, Washington
  4. 1.6 Puget Sound region, Washington
  5. 2.1 Puget Sound region, Washington
  6. 1.5 Puget Sound region, Washington
  7. 1.8 4 km S of Seabeck, Washington
  8. 1.7 Puget Sound region, Washington
  9. 2.1 14 km N of Hoodsport, Washington
  10. 1.7 Puget Sound region, Washington
  11. 1.5 3 km SSE of Quilcene, Washington
  12. 2.5 11 km SW of Brinnon, Washington
  13. 1.7 6 km S of Port Ludlow, Washington
  14. 1.7 3 km NNW of Edmonds, Washington
  15. 1.6 4 km NW of Edmonds, 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 4,400 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.