QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

21 km N of Amanda Park, Washington

· 30 km deep · released about 12 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Jefferson County 32 kmClallam County 51 kmGrays Harbor County 60 kmMason County 64 kmKitsap County 93 kmIsland County 107 kmSan Juan County 112 kmThurston 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 1.7 (ml)
Depth
30 km below the surface
Felt
no reports yet
Nearest
Jefferson County, 32 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1880 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 12 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 1,200,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 870,000× the energy of this one
  3. Around the size people start to feel M 3.0 78× the energy of this one
  4. This earthquake M 1.7 about 12 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 47.6520, -123.8955. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Jefferson County, WA 32 km (20 mi) WSW of here earthquakes near Jefferson County
Clallam County, WA 51 km (32 mi) S of here earthquakes near Clallam County
Grays Harbor County, WA 60 km (37 mi) N of here earthquakes near Grays Harbor County
Mason County, WA 64 km (40 mi) WNW of here earthquakes near Mason County
Kitsap County, WA 93 km (58 mi) W of here earthquakes near Kitsap County
Island County, WA 107 km (67 mi) WSW of here earthquakes near Island County

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

Aftershocks so far

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

  1. 2.8 25 km WNW of Hoodsport, Washington
  2. 2.5 8 km ESE of Forks, Washington
  3. 1.7 8 km WNW of Taholah, Washington
  4. 1.9 10 km E of Forks, Washington
  5. 2.5 16 km NNE of Amanda Park, Washington
  6. 2.2 16 km NNE of Amanda Park, Washington
  7. 1.7 35 km W of Brinnon, Washington
  8. 2.4 6 km SSW of Neilton, Washington
  9. 2.5 15 km ESE of Forks, Washington
  10. 1.7 14 km ESE of Forks, Washington
  11. 1.7 16 km E of Humptulips, Washington
  12. 1.6 1 km NNE of Humptulips, Washington
  13. 1.6 1 km N of Humptulips, Washington
  14. 1.9 16 km NW of Amanda Park, Washington
  15. 1.8 29 km WNW of Hoodsport, 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 3,200 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.