QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9ml

Earthquake near Lewiston Orchards, ID

No earthquake was likely felt in Lewiston Orchards in the 24 hours to 6:50 pm PST (02:50 UTC). The last one was M 2.3, 7 km (5 mi) WSW, at 2:00 pm PDT on 11 September 2026, estimated intensity III (weak) in town. Every earthquake near Lewiston Orchards

This page: a magnitude 2.9 earthquake was recorded 23 km (14 mi) east-southeast of Lewiston Orchards, ID, at 1:30 am PDT on 16 October 2021 (08:30 UTC), 10 km deep. 12 people have reported feeling it to USGS.

USGS: 8 km SSW of Culdesac, Idaho

1:30 am PDT, Oct 16, 2021 · · 10 km deep · released about 680 lb of TNT

10 km30 km60 km120 km N Nez Perce County 6 kmLewis County 22 kmAsotin County 43 kmLatah County 57 kmGarfield County 66 kmWallowa County 87 kmClearwater County 90 kmWhitman County 93 kmColumbia County 93 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
1:30 am PDT on 16 October 2021 ()
Where
23 km (14 mi) east-southeast of Lewiston Orchards, ID · earthquakes near Lewiston Orchards
Idaho today
every earthquake in Idaho in the last 24 hours
Magnitude
M 2.9 (ml)
Depth
10 km below the surface
Felt
12 reports · strongest reported intensity IV
Nearest
Nez Perce County, 6 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1783 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

At this magnitude and depth, people at rest would likely notice it out to about 30 km (19 mi) from the epicentre. In Lewiston Orchards, 23 km away, the estimate is intensity II (weak). Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.

Earthquakes near other towns within 30 km: Lapwai, Asotin, Lewiston, Clarkston.

How big was it?

This earthquake released about 680 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 22,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 16,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.4× the energy of this one
  4. This earthquake M 2.9 about 680 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 since 1900 lists no earthquake of M5 or more within 50 km.

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 46.3031, -116.7000. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Nez Perce County, ID 6 km (4 mi) NW earthquakes near Nez Perce County
Lewis County, ID 22 km (14 mi) ESE earthquakes near Lewis County
Asotin County, WA 43 km (27 mi) WSW earthquakes near Asotin County
Latah County, ID 57 km (36 mi) N earthquakes near Latah County
Garfield County, WA 66 km (41 mi) WNW earthquakes near Garfield County
Wallowa County, OR 87 km (54 mi) SSW earthquakes near Wallowa County

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

Aftershocks so far

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

  1. 1.1 8 km WSW of Peck, Idaho
  2. 1.7 7 km SW of Troy, Idaho
  3. 2.3 1 km NW of Asotin, Washington
  4. 1.7 4 km E of Uniontown, Washington
  5. 2.3 5 km SSW of Moscow, Idaho
  6. 1.7 6 km WSW of Troy, Idaho
  7. 2.1 2 km SSE of Lewiston Orchards, Idaho
  8. 2.2 2 km NE of Lewiston Orchards, Idaho
  9. 1.6 10 km ESE of Moscow, Idaho
  10. 2.1 7 km SSW of Orofino, Idaho
  11. 1.8 8 km W of Troy, Idaho
  12. 1.6 16 km SSW of Sweetwater, Idaho
  13. 2.2 1 km WNW of Lewiston Orchards, Idaho
  14. 1.8 6 km SSW of Genesee, Idaho
  15. 2.0 3 km SSE of Lewiston Orchards, Idaho

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.