QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6ml

31 km NNW of Amanda Park, Washington

· -0.4 km deep · released about 6.6 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Jefferson County 37 kmClallam County 43 kmGrays Harbor County 70 kmMason County 76 kmKitsap County 103 kmSan Juan County 109 kmIsland County 111 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
-0.4 km below the surface
Felt
no reports yet
Nearest
Jefferson County, 37 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 475 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 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 47.7323, -124.0128. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Jefferson County, WA 37 km (23 mi) WSW of here earthquakes near Jefferson County
Clallam County, WA 43 km (27 mi) SSW of here earthquakes near Clallam County
Grays Harbor County, WA 70 km (44 mi) NNW of here earthquakes near Grays Harbor County
Mason County, WA 76 km (47 mi) NW of here earthquakes near Mason County
Kitsap County, WA 103 km (64 mi) W of here earthquakes near Kitsap County
San Juan County, WA 109 km (68 mi) SW 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

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

  1. 1.8 34 km NE of Amanda Park, Washington
  2. 1.7 35 km NE of Amanda Park, Washington
  3. 1.6 16 km NNW of Queets, Washington
  4. 1.7 12 km S of Forks, Washington
  5. 2.4 40 km NE of Amanda Park, Washington
  6. 1.5 6 km E of Queets, Washington
  7. 1.6 11 km E of Forks, Washington
  8. 2.0 35 km NE of Amanda Park, Washington
  9. 1.6 20 km N of Queets, Washington
  10. 1.7 12 km NNW of Humptulips, Washington
  11. 1.6 9 km NE of Humptulips, Washington
  12. 1.7 12 km NE of Santiago, Washington
  13. 1.6 4 km WSW of Forks, Washington
  14. 2.0 9 km NE of Santiago, Washington
  15. 1.5 12 km NNW of Amanda 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 4.1 on 2018-11-19 — it released about 6,000 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.