QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8ml

Earthquake near Conda, ID

No earthquake was likely felt in Conda in the 24 hours to 8:28 am MST (15:28 UTC). The last one was M 2.1, 13 km (8 mi) SE, at 10:47 am MDT on 10 October 2026, estimated intensity II (weak) in town. Every earthquake near Conda

This page: a magnitude 2.8 earthquake was recorded 23 km (14 mi) east-southeast of Conda, ID, at 12:39 pm MDT on 10 September 2025 (18:39 UTC), 5.0 km deep. 1 person has reported feeling it to USGS.

USGS: 22 km NNE of Georgetown, Idaho

12:39 pm MDT, Sep 10, 2025 · · 5.0 km deep · released about 480 lb of TNT

10 km30 km60 km120 km N Caribou County 27 kmBear Lake County 42 kmLincoln County 68 kmFranklin County 71 kmBannock County 79 kmBonneville County 86 kmSublette County 110 kmCache County 111 kmBingham County 111 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
12:39 pm MDT on 10 September 2025 ()
Where
23 km (14 mi) east-southeast of Conda, ID · earthquakes near Conda
Idaho today
every earthquake in Idaho in the last 24 hours
Magnitude
M 2.8 (ml)
Depth
5.0 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Caribou County, 27 km WNW
Nearest mapped fault
Western Bear Lake fault, 23 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 344 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 27 km (17 mi) from the epicentre. In Conda, 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.

Likely felt in: Conda 23 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 480 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 32,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 22,000× the energy of this one
  3. Around the size people start to feel M 3.0 2× the energy of this one
  4. This earthquake M 2.8 about 480 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 5,600 times the energy of this one.

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

  1. 5.8 4 km SSE of Auburn, Wyoming · 26 km ENE of this epicentre
  2. 5.3 Southeastern Idaho · 37 km N of this epicentre
  3. 5.3 29 km WSW of Freedom, Idaho · 31 km NNW 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 42.6647, -111.2614. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Caribou County, ID 27 km (17 mi) WNW earthquakes near Caribou County
Bear Lake County, ID 42 km (26 mi) S earthquakes near Bear Lake County
Lincoln County, WY 68 km (42 mi) SE earthquakes near Lincoln County
Franklin County, ID 71 km (44 mi) SW earthquakes near Franklin County
Bannock County, ID 79 km (49 mi) W earthquakes near Bannock County
Bonneville County, ID 86 km (54 mi) NNW earthquakes near Bonneville 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. 1.5 11 km E of Bancroft, Idaho
  8. 2.9 23 km WNW of Auburn, Wyoming
  9. 1.6 9 km NW of Georgetown, Idaho
  10. 1.9 6 km W of Bennington, Idaho
  11. 1.8 7 km WSW of Bennington, Idaho
  12. 1.9 11 km NW of Georgetown, Idaho
  13. 1.9 9 km NW of Georgetown, Idaho
  14. 2.2 7 km WNW of Bennington, Idaho
  15. 1.5 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.