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 4:37 pm MST (23:37 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 24 km (15 mi) south-southeast of Conda, ID, at 6:37 pm MDT on 5 September 2017 (00:37 UTC), 10 km deep.

USGS: 6 km NNW of Georgetown, Idaho

6:37 pm MDT, Sep 5, 2017 · · 10 km deep · released about 480 lb of TNT

Every earthquake near Conda Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Bear Lake County 29 kmCaribou County 30 kmFranklin County 54 kmLincoln County 67 kmBannock County 71 kmCache County 94 kmBonneville County 97 kmOneida County 101 kmRich County 102 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
6:37 pm MDT on 5 September 2017 ()
Where
24 km (15 mi) south-southeast of Conda, ID · earthquakes near Conda
Idaho today
every earthquake in Idaho in the last 24 hours
Magnitude
M 2.8 (ml)
Depth
10 km below the surface
Felt
no reports yet
Nearest
Bear Lake County, 29 km S
Nearest mapped fault
Western Bear Lake fault, 7 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 3261 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 25 km (16 mi) from the epicentre. In Conda, 24 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: Soda Springs 22 km, intensity II · Conda 24 km, intensity II · Montpelier 25 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 2 earthquakes of M5 or more within 50 km:

  1. 5.8 4 km SSE of Auburn, Wyoming · 42 km NE of this epicentre
  2. 5.3 29 km WSW of Freedom, Idaho · 43 km N 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 42.5402, -111.3885. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Bear Lake County, ID 29 km (18 mi) S earthquakes near Bear Lake County
Caribou County, ID 30 km (19 mi) NNW earthquakes near Caribou County
Franklin County, ID 54 km (34 mi) SW earthquakes near Franklin County
Lincoln County, WY 67 km (42 mi) ESE earthquakes near Lincoln County
Bannock County, ID 71 km (44 mi) WNW earthquakes near Bannock County
Cache County, UT 94 km (59 mi) SSW earthquakes near Cache County

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

Aftershocks so far

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

  1. 2.7 13 km NNW of Georgetown, Idaho
  2. 1.7 9 km NNW of Georgetown, Idaho
  3. 2.6 12 km NNW of Georgetown, Idaho
  4. 2.4 14 km ESE of Soda Springs, Idaho
  5. 3.2 14 km NNW of Georgetown, Idaho
  6. 3.0 8 km NNW of Georgetown, Idaho
  7. 2.6 10 km NNW of Georgetown, Idaho
  8. 2.4 10 km NNW of Georgetown, Idaho
  9. 2.8 14 km NNW of Georgetown, Idaho
  10. 2.7 14 km ENE of Soda Springs, Idaho
  11. 3.0 12 km E of Soda Springs, Idaho
  12. 3.1 13 km ESE of Soda Springs, Idaho
  13. 2.4 15 km E of Soda Springs, Idaho
  14. 2.3 10 km NNW of Georgetown, Idaho
  15. 3.7 13 km ESE of Soda Springs, 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.