QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7ml

7 km NNW of Montesano, Washington

· 39 km deep · released about 390 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Grays Harbor County 16 kmMason County 51 kmPacific County 54 kmThurston County 63 kmWahkiakum County 84 kmJefferson County 86 kmKitsap County 101 kmLewis County 110 kmClatsop County 112 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
39 km below the surface
Felt
1 report · strongest reported intensity III
Nearest
Grays Harbor County, 16 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 569 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 390 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 39,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 28,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.5× the energy of this one
  4. This earthquake M 2.7 about 390 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 47.0343, -123.6542. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Grays Harbor County, WA 16 km (10 mi) SE of here earthquakes near Grays Harbor County
Mason County, WA 51 km (31 mi) SW of here earthquakes near Mason County
Pacific County, WA 54 km (34 mi) N of here earthquakes near Pacific County
Thurston County, WA 63 km (39 mi) W of here earthquakes near Thurston County
Wahkiakum County, WA 84 km (52 mi) NNW of here earthquakes near Wahkiakum County
Jefferson County, WA 86 km (54 mi) S of here earthquakes near Jefferson County

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

Aftershocks so far

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

  1. 1.0 6 km SE of McCleary, Washington
  2. 1.8 2 km WSW of Ocean City, Washington
  3. 1.7 1 km E of Oakville, Washington
  4. 1.7 14 km S of Cosmopolis, Washington
  5. 1.6 4 km SSW of Shelton, Washington
  6. 1.5 10 km NNE of Tokeland, Washington
  7. 1.5 11 km S of Shelton, Washington
  8. 1.7 8 km SSW of Shelton, Washington
  9. 1.7 12 km NNW of Humptulips, Washington
  10. 2.2 12 km ENE of Humptulips, Washington
  11. 1.8 3 km WSW of South Bend, Washington
  12. 1.6 16 km WNW of Skokomish, Washington
  13. 1.8 3 km S of Willapa, Washington
  14. 1.6 5 km WNW of Humptulips, Washington
  15. 1.5 2 km ESE of Humptulips, 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.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.