QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3ml

Earthquake near Montpelier, ID

No earthquake was likely felt in Montpelier in the 24 hours to 1:28 pm MST (20:28 UTC). The last one was M 2.5, 19 km (12 mi) WNW, at 9:59 pm MST on 7 November 2026, estimated intensity II (weak) in town. Every earthquake near Montpelier

This page: a magnitude 2.3 earthquake was recorded 3 km (2 mi) west-northwest of Montpelier, ID, at 3:33 pm MDT on 2 August 2025 (21:33 UTC), 1.7 km deep.

USGS: 3 km WNW of Montpelier, Idaho

3:33 pm MDT, Aug 2, 2025 · · 1.7 km deep · released about 72 lb of TNT

10 km30 km60 km120 km N Bear Lake County 6 kmFranklin County 44 kmCaribou County 53 kmLincoln County 55 kmCache County 75 kmRich County 79 kmBannock County 83 kmOneida County 99 kmBonneville County 120 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
3:33 pm MDT on 2 August 2025 ()
Where
3 km (2 mi) west-northwest of Montpelier, ID · earthquakes near Montpelier
Idaho today
every earthquake in Idaho in the last 24 hours
Magnitude
M 2.3 (ml)
Depth
1.7 km below the surface
Felt
no reports yet
Nearest
Bear Lake County, 6 km S
Nearest mapped fault
Eastern Bear Lake fault, 4 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 464 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 19 km (12 mi) from the epicentre. In Montpelier, 3 km away, the estimate is intensity III (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.

Likely felt in: Montpelier 3 km, intensity III. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 72 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 210,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 150,000× the energy of this one
  3. Around the size people start to feel M 3.0 13× the energy of this one
  4. This earthquake M 2.3 about 72 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

The largest earthquake within 50 km since 2016 was M 5.3 on 2017-09-02 — about 38,000 times the energy of this one.

Before 2016, the USGS record lists one earthquake of M5 or more within 50 km:

  1. 5.8 8 km W of Garden City, Utah · 47 km SSW 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 42.3392, -111.3322. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Bear Lake County, ID 6 km (4 mi) S earthquakes near Bear Lake County
Franklin County, ID 44 km (28 mi) WSW earthquakes near Franklin County
Caribou County, ID 53 km (33 mi) NNW earthquakes near Caribou County
Lincoln County, WY 55 km (34 mi) ESE earthquakes near Lincoln County
Cache County, UT 75 km (47 mi) SSW earthquakes near Cache County
Rich County, UT 79 km (49 mi) S earthquakes near Rich County

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

Aftershocks so far

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

  1. 2.5 15 km SW of Georgetown, Idaho
  2. 2.2 18 km NE of Georgetown, Idaho
  3. 1.8 11 km E of Georgetown, Idaho
  4. 2.3 8 km SW of Georgetown, Idaho
  5. 2.9 7 km W of Bennington, Idaho
  6. 2.1 15 km E of Soda Springs, Idaho
  7. 1.6 9 km NW of Georgetown, Idaho
  8. 1.9 6 km W of Bennington, Idaho
  9. 1.8 7 km WSW of Bennington, Idaho
  10. 1.9 11 km NW of Georgetown, Idaho
  11. 1.9 9 km NW of Georgetown, Idaho
  12. 2.2 7 km WNW of Bennington, Idaho
  13. 1.5 6 km WSW of Bennington, Idaho
  14. 2.0 6 km W of Bennington, Idaho
  15. 3.2 6 km WSW of Bennington, 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.