QuakeIndex

explosion · reviewed by a seismologist

M 2.1md

5 km ENE of Pullman, Washington

· -0.8 km deep · released about 44 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Latah County 30 kmWhitman County 36 kmGarfield County 48 kmNez Perce County 54 kmBenewah County 63 kmAsotin County 64 kmLewis County 78 kmColumbia County 80 kmSpokane County 99 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 2.1 (md)
Depth
-0.8 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Latah County, 30 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 10 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 1 person has reported feeling it to USGS.

USGS catalogues this as explosion, not an earthquake.

How big was it?

This earthquake released about 44 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 340,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 240,000× the energy of this one
  3. Around the size people start to feel M 3.0 22× the energy of this one
  4. This earthquake M 2.1 about 44 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 46.7543, -117.1145. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Latah County, ID 30 km (19 mi) WSW of here earthquakes near Latah County
Whitman County, WA 36 km (22 mi) ESE of here earthquakes near Whitman County
Garfield County, WA 48 km (30 mi) NE of here earthquakes near Garfield County
Nez Perce County, ID 54 km (34 mi) NNW of here earthquakes near Nez Perce County
Benewah County, ID 63 km (39 mi) SW of here earthquakes near Benewah County
Asotin County, WA 64 km (40 mi) N of here earthquakes near Asotin County

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

Aftershocks so far

1 earthquake has been recorded within 50 km since this one.

  1. 2.3 1 km NW of Asotin, 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.