QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6ml

29 km NNE of Amanda Park, Washington

· 27 km deep · released about 6.6 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Jefferson County 20 kmClallam County 46 kmMason County 59 kmGrays Harbor County 67 kmKitsap County 83 kmIsland County 95 kmSan Juan County 101 kmThurston 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
27 km below the surface
Felt
no reports yet
Nearest
Jefferson County, 20 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1516 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 47.7115, -123.7555. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Jefferson County, WA 20 km (12 mi) WSW of here earthquakes near Jefferson County
Clallam County, WA 46 km (28 mi) SSE of here earthquakes near Clallam County
Mason County, WA 59 km (37 mi) NW of here earthquakes near Mason County
Grays Harbor County, WA 67 km (41 mi) N of here earthquakes near Grays Harbor County
Kitsap County, WA 83 km (52 mi) W of here earthquakes near Kitsap County
Island County, WA 95 km (59 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

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

  1. 1.6 16 km WNW of Skokomish, Washington
  2. 1.6 9 km NE of Humptulips, Washington
  3. 1.7 12 km NE of Santiago, Washington
  4. 2.9 8 km SW of Port Angeles, Washington
  5. 2.0 9 km NE of Santiago, Washington
  6. 2.8 21 km NW of Hoodsport, Washington
  7. 1.5 12 km NNW of Amanda Park, Washington
  8. 1.6 15 km NNE of Amanda Park, Washington
  9. 1.6 24 km SSW of River Road, Washington
  10. 2.2 25 km W of Brinnon, Washington
  11. 2.0 8 km WSW of Neilton, Washington
  12. 1.8 7 km SE of Queets, Washington
  13. 1.5 16 km NNE of Amanda Park, Washington
  14. 1.6 31 km NNW of Amanda Park, Washington
  15. 1.6 24 km ESE of Neilton, 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.