QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6ml

24 km SSW of River Road, Washington

· 42 km deep · released about 7.6 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Jefferson County 22 kmKitsap County 51 kmIsland County 54 kmClallam County 55 kmMason County 57 kmSan Juan County 73 kmGrays Harbor County 94 kmThurston County 108 kmSnohomish County 113 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
42 km below the surface
Felt
no reports yet
Nearest
Jefferson County, 22 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 389 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 7.6 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 2,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,400,000× 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 7.6 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 47.8607, -123.2507. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Jefferson County, WA 22 km (13 mi) ENE of here earthquakes near Jefferson County
Kitsap County, WA 51 km (32 mi) WNW of here earthquakes near Kitsap County
Island County, WA 54 km (34 mi) SW of here earthquakes near Island County
Clallam County, WA 55 km (34 mi) ESE of here earthquakes near Clallam County
Mason County, WA 57 km (35 mi) N of here earthquakes near Mason County
San Juan County, WA 73 km (45 mi) S of here earthquakes near San Juan County

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

Aftershocks so far

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

  1. 0.4 11 km NE of Hoodsport, Washington
  2. 2.1 6 km ENE of Bell Hill, Washington
  3. 1.8 34 km NE of Amanda Park, Washington
  4. 1.7 35 km NE of Amanda Park, Washington
  5. 1.6 8 km S of Port Hadlock-Irondale, Washington
  6. 2.5 11 km SSW of River Road, Washington
  7. 1.6 5 km SSE of Quilcene, Washington
  8. 1.9 14 km NNE of Port Angeles East, Washington
  9. 1.9 4 km E of Port Townsend, Washington
  10. 1.7 10 km NE of Hoodsport, Washington
  11. 1.9 10 km NE of Hoodsport, Washington
  12. 1.5 9 km NE of Hoodsport, Washington
  13. 1.5 9 km NE of Hoodsport, Washington
  14. 1.8 21 km S of Port Angeles East, Washington
  15. 1.6 6 km SSW of Port Ludlow, 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 12,000 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.