QuakeIndex

explosion · reviewed by a seismologist

M 1.6ml

2 km NNE of Raymond, Washington

· -0.3 km deep · released about 7.8 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Pacific County 17 kmGrays Harbor County 46 kmWahkiakum County 51 kmThurston County 72 kmClatsop County 76 kmMason County 83 kmCowlitz County 98 kmColumbia County 98 kmLewis County 103 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
-0.3 km below the surface
Felt
no reports yet
Nearest
Pacific County, 17 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 502 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

USGS catalogues this as explosion, not an earthquake.

How big was it?

This earthquake released about 7.8 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 1,900,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,400,000× the energy of this one
  3. Around the size people start to feel M 3.0 120× the energy of this one
  4. This earthquake M 1.6 about 7.8 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 46.7075, -123.7202. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Pacific County, WA 17 km (11 mi) NNE of here earthquakes near Pacific County
Grays Harbor County, WA 46 km (29 mi) S of here earthquakes near Grays Harbor County
Wahkiakum County, WA 51 km (32 mi) NNW of here earthquakes near Wahkiakum County
Thurston County, WA 72 km (45 mi) WSW of here earthquakes near Thurston County
Clatsop County, OR 76 km (47 mi) N of here earthquakes near Clatsop County
Mason County, WA 83 km (51 mi) SSW of here earthquakes near Mason County

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

Aftershocks so far

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

  1. 1.4 20 km SW of Grayland, Washington
  2. 1.7 1 km E of Oakville, Washington
  3. 1.7 14 km S of Cosmopolis, Washington
  4. 1.8 7 km NNW of Pe Ell, Washington
  5. 1.5 10 km NNE of Tokeland, Washington
  6. 2.4 10 km ESE of Pe Ell, Washington
  7. 1.8 3 km WSW of South Bend, Washington
  8. 1.8 3 km S of Willapa, Washington
  9. 2.6 5 km WSW of Pe Ell, Washington
  10. 1.7 2 km N of Oakville, Washington
  11. 1.9 12 km SSE of Cosmopolis, Washington
  12. 1.9 8 km NW of Aberdeen Gardens, Washington
  13. 1.9 12 km SW of Lebam, Washington
  14. 1.5 17 km NNW of Pe Ell, Washington
  15. 2.0 14 km SSE of Cosmopolis, 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

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