QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6ml

10 km SW of Brinnon, Washington

· 17 km deep · released about 7.3 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kitsap County 26 kmMason County 31 kmJefferson County 46 kmIsland County 66 kmThurston County 75 kmGrays Harbor County 83 kmClallam County 87 kmKing County 88 kmPierce County 88 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
17 km below the surface
Felt
no reports yet
Nearest
Kitsap County, 26 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2036 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 7.3 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 2,100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,500,000× the energy of this one
  3. Around the size people start to feel M 3.0 130× the energy of this one
  4. This earthquake M 1.6 about 7.3 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 47.6055, -122.9948. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kitsap County, WA 26 km (16 mi) W of here earthquakes near Kitsap County
Mason County, WA 31 km (19 mi) NNE of here earthquakes near Mason County
Jefferson County, WA 46 km (28 mi) ESE of here earthquakes near Jefferson County
Island County, WA 66 km (41 mi) SSW of here earthquakes near Island County
Thurston County, WA 75 km (47 mi) N of here earthquakes near Thurston County
Grays Harbor County, WA 83 km (52 mi) NE of here earthquakes near Grays Harbor 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. 1.8 7 km ESE of Blyn, Washington
  2. 1.5 1 km WSW of Silverdale, Washington
  3. 1.5 2 km WNW of Gig Harbor, Washington
  4. 1.8 4 km SSW of Port Ludlow, Washington
  5. 1.7 12 km NNW of Quilcene, Washington
  6. 1.6 7 km WNW of Gorst, Washington
  7. 1.7 2 km S of River Road, Washington
  8. 1.5 7 km ENE of Allyn, Washington
  9. 1.8 5 km N of Lofall, Washington
  10. 1.7 1 km NNE of Enetai, Washington
  11. 1.6 22 km NNW of Hoodsport, Washington
  12. 1.7 0 km NNE of Navy Yard City, Washington
  13. 1.9 4 km NE of Home, Washington
  14. 1.9 2 km NE of Keyport, Washington
  15. 1.6 1 km S 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.1 on 2017-02-23 — it released about 5,600 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.