QuakeIndex

explosion · reviewed by a seismologist

M 2.0ml

Earthquake near Hoquiam, WA

USGS: 5 km NNE of Hoquiam, Washington

10:14 am PDT, Mar 11, 2019 · · -0.0 km deep · released about 26 lb of TNT

Every earthquake near Hoquiam Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Grays Harbor County 10 kmPacific County 53 kmMason County 64 kmThurston County 80 kmWahkiakum County 89 kmJefferson County 90 kmClatsop County 112 kmKitsap County 114 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
10:14 am PDT on 11 March 2019 ()
Where
6 km (3 mi) NNE of Hoquiam, WA · earthquakes near Hoquiam
Magnitude
M 2.0 (ml)
Depth
-0.0 km below the surface
Felt
no reports yet
Nearest
Grays Harbor County, 10 km NNE
Nearest mapped fault
Cascadia fold and fault belt, 14 km from its surface trace — near is not the same as on
Status
Reviewed by a seismologist

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

A magnitude 2.0 earthquake was recorded 6 km (3 mi) NNE of Hoquiam, WA, at 10:14 am PDT on 11 March 2019 (17:14 UTC). This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

Earthquakes near other towns within 30 km: Aberdeen, Cosmopolis, Central Park, Montesano, Ocean Shores, Westport.

USGS catalogues this as explosion, not an earthquake.

How big was it?

This earthquake released about 26 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 580,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 410,000× the energy of this one
  3. Around the size people start to feel M 3.0 36× the energy of this one
  4. This earthquake M 2.0 about 26 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.

For this area

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

Before 2016, the USGS record lists 3 earthquakes of M5 or more within 50 km:

  1. 5.8 8 km N of Satsop, Washington · 31 km E of this epicentre
  2. 5.1 Olympic Peninsula, Washington · 40 km ENE of this epicentre
  3. 5.0 18 km N of Satsop, Washington · 32 km ENE of this epicentre

Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.

Where

Epicentre 47.0295, -123.8708. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Grays Harbor County, WA 10 km (6 mi) NNE earthquakes near Grays Harbor County
Pacific County, WA 53 km (33 mi) S earthquakes near Pacific County
Mason County, WA 64 km (40 mi) NE earthquakes near Mason County
Thurston County, WA 80 km (49 mi) E earthquakes near Thurston County
Wahkiakum County, WA 89 km (55 mi) SSE earthquakes near Wahkiakum County
Jefferson County, WA 90 km (56 mi) NNE earthquakes near Jefferson 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. 1.6 15 km N of Satsop, Washington
  2. 1.6 24 km ESE of Neilton, Washington
  3. 1.8 5 km WSW of Aberdeen Gardens, Washington
  4. 1.6 2 km ENE of Humptulips, Washington
  5. 2.1 14 km W of Neilton, Washington
  6. 1.6 2 km NNE of Raymond, Washington
  7. 1.8 11 km ENE of Copalis Beach, Washington
  8. 1.5 17 km SSE of Montesano, Washington
  9. 1.5 8 km SSW of Cosmopolis, Washington
  10. 2.2 2 km NW of Markham, Washington
  11. 2.4 6 km SSW of Neilton, Washington
  12. 1.7 16 km E of Humptulips, Washington
  13. 2.7 7 km NNW of Montesano, Washington
  14. 1.6 1 km NNE of Humptulips, Washington
  15. 1.6 1 km N 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.