QuakeIndex

explosion · reviewed by a seismologist

M 1.9ml

Earthquake near Moscow, ID

No earthquake was likely felt in Moscow in the 24 hours to 7:42 pm PST (03:42 UTC). The last one was M 2.1, 9 km (6 mi) WNW, at 12:55 pm PDT on 10 September 2026, estimated intensity II (weak) in town; 1 felt report to USGS. Every earthquake near Moscow

No: USGS classifies this as a explosion, not an earthquake. A magnitude 1.9 explosion was recorded 27 km (17 mi) east of Moscow, ID, at 12:16 pm PDT on 31 October 2025 (19:16 UTC), less than 1 km deep. 1 person has reported feeling it to USGS.

USGS: 7 km WSW of Deary, Idaho

12:16 pm PDT, Oct 31, 2025 · · -0.9 km deep · released about 25 lb of TNT

10 km30 km60 km120 km N Latah County 9 kmNez Perce County 49 kmBenewah County 50 kmLewis County 61 kmWhitman County 69 kmClearwater County 76 kmGarfield County 78 kmAsotin County 79 kmShoshone County 87 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
12:16 pm PDT on 31 October 2025 ()
Where
27 km (17 mi) east of Moscow, ID · earthquakes near Moscow
Idaho today
every earthquake in Idaho in the last 24 hours
Magnitude
M 1.9 (ml)
Depth
-0.9 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Latah County, 9 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 375 days ago

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

At this magnitude and depth, people at rest would likely notice it out to about 15 km (9 mi) from the epicentre. In Moscow, 27 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.

USGS catalogues this as explosion, not an earthquake.

How big was it?

This earthquake released about 25 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 620,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 440,000× the energy of this one
  3. Around the size people start to feel M 3.0 39× the energy of this one
  4. This earthquake M 1.9 about 25 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 46.7665, -116.6473. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Latah County, ID 9 km (5 mi) NW earthquakes near Latah County
Nez Perce County, ID 49 km (30 mi) S earthquakes near Nez Perce County
Benewah County, ID 50 km (31 mi) N earthquakes near Benewah County
Lewis County, ID 61 km (38 mi) SSE earthquakes near Lewis County
Whitman County, WA 69 km (43 mi) WNW earthquakes near Whitman County
Clearwater County, ID 76 km (48 mi) E earthquakes near Clearwater County

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

Aftershocks so far

12 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. 2.1 5 km ENE of Pullman, Washington
  4. 2.3 9 km ESE of Princeton, Idaho
  5. 1.7 4 km E of Uniontown, Washington
  6. 2.3 4 km ENE of Pullman, Washington
  7. 2.3 5 km SSW of Moscow, Idaho
  8. 1.7 6 km WSW of Troy, Idaho
  9. 1.6 8 km SSE of Pullman, Washington
  10. 2.2 8 km SW of Potlatch, Idaho
  11. 2.2 2 km NE of Lewiston Orchards, Idaho
  12. 1.6 10 km ESE of Moscow, 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.