QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7ml

35 km NE of Amanda Park, Washington

· -1.1 km deep · released about 350 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Jefferson County 15 kmMason County 45 kmClallam County 55 kmGrays Harbor County 66 kmKitsap County 67 kmIsland County 85 kmThurston County 98 kmSan Juan County 98 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 2.7 (ml)
Depth
-1.1 km below the surface
Felt
6 reports · strongest reported intensity III
Nearest
Jefferson County, 15 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2371 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 6 people have reported feeling it to USGS.

How big was it?

This earthquake released about 350 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 43,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 31,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.7× the energy of this one
  4. This earthquake M 2.7 about 350 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 47.6732, -123.5455. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Jefferson County, WA 15 km (9 mi) S of here earthquakes near Jefferson County
Mason County, WA 45 km (28 mi) NW of here earthquakes near Mason County
Clallam County, WA 55 km (34 mi) SSE of here earthquakes near Clallam County
Grays Harbor County, WA 66 km (41 mi) NNE of here earthquakes near Grays Harbor County
Kitsap County, WA 67 km (42 mi) W of here earthquakes near Kitsap County
Island County, WA 85 km (53 mi) SW of here earthquakes near Island County

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

Aftershocks so far

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

  1. 1.9 12 km NNW of Amanda Park, Washington
  2. 2.2 32 km ESE of Forks, Washington
  3. 1.6 9 km SSW of Carlsborg, Washington
  4. 2.1 14 km N of Hoodsport, Washington
  5. 2.0 Washington-British Columbia border region
  6. 2.5 11 km SW of Brinnon, Washington
  7. 1.7 5 km WSW of Neilton, Washington
  8. 1.6 17 km N of Amanda Park, Washington
  9. 2.6 11 km WNW of Hoodsport, Washington
  10. 2.4 11 km NE of Hoodsport, Washington
  11. 1.9 14 km NNW of Amanda Park, Washington
  12. 1.7 25 km ESE of Forks, Washington
  13. 1.7 26 km ESE of Forks, Washington
  14. 1.6 13 km N of Amanda Park, Washington
  15. 1.6 Olympic Peninsula, 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 120 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.