QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9ml

6 km N of Brinnon, Washington

· 50 km deep · released about 25 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kitsap County 21 kmMason County 48 kmJefferson County 48 kmIsland County 50 kmKing County 84 kmClallam County 86 kmSan Juan County 87 kmThurston County 89 kmSnohomish County 91 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 1.9 (ml)
Depth
50 km below the surface
Felt
no reports yet
Nearest
Kitsap County, 21 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 566 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 25 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 600,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 420,000× the energy of this one
  3. Around the size people start to feel M 3.0 38× the energy of this one
  4. This earthquake M 1.9 about 25 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 47.7368, -122.8863. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kitsap County, WA 21 km (13 mi) WNW of here earthquakes near Kitsap County
Mason County, WA 48 km (30 mi) NNE of here earthquakes near Mason County
Jefferson County, WA 48 km (30 mi) E of here earthquakes near Jefferson County
Island County, WA 50 km (31 mi) SSW of here earthquakes near Island County
King County, WA 84 km (52 mi) WNW of here earthquakes near King County
Clallam County, WA 86 km (53 mi) ESE of here earthquakes near Clallam County

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

Aftershocks so far

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

  1. 2.1 3 km SSE of Quilcene, Washington
  2. 1.7 2 km ESE of Enetai, Washington
  3. 1.7 4 km SE of Quilcene, Washington
  4. 1.5 4 km SW of Port Ludlow, Washington
  5. 1.6 4 km ESE of Quilcene, Washington
  6. 2.0 3 km WNW of Gorst, Washington
  7. 1.7 5 km SSE of Quilcene, Washington
  8. 1.6 0 km SW of Esperance, Washington
  9. 1.5 6 km WSW of Port Ludlow, Washington
  10. 1.7 Puget Sound region, Washington
  11. 2.2 7 km WSW of Seattle, Washington
  12. 1.7 4 km SSW of Port Ludlow, Washington
  13. 1.6 5 km W of Burley, Washington
  14. 1.5 2 km SW of Gorst, Washington
  15. 1.9 1 km ENE 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 1,600 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.