QuakeIndex

Earthquake · reviewed by a seismologist

M 5.0mww

Earthquake near Conda, ID

No earthquake was likely felt in Conda in the 24 hours to 6:36 am MST (13:36 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 5.0 earthquake was recorded 21 km (13 mi) south-southeast of Conda, ID, at 3:47 am MDT on 10 September 2017 (09:47 UTC), 9.8 km deep. 72 people have reported feeling it to USGS.

USGS: 9 km NNW of Georgetown, Idaho

3:47 am MDT, Sep 10, 2017 · · 9.8 km deep · released about 480 tons of TNT

10 km30 km60 km120 km N Caribou County 27 kmBear Lake County 32 kmFranklin County 55 kmBannock County 68 kmLincoln County 71 kmBonneville County 94 kmCache County 96 kmOneida County 100 kmRich County 105 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
3:47 am MDT on 10 September 2017 ()
Where
21 km (13 mi) south-southeast of Conda, ID · earthquakes near Conda
Idaho today
every earthquake in Idaho in the last 24 hours
Magnitude
M 5.0 (mww)
Depth
9.8 km below the surface
Felt
72 reports · strongest reported intensity V
Measured shaking
intensity V (ShakeMap)
USGS impact alert
green
Nearest
Caribou County, 27 km NNW
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 1557 days ago

This was a moderate earthquake. Shaking at this size can damage poorly built structures close to the epicentre.

At this magnitude and depth, people at rest would likely notice it out to about 193 km (120 mi) from the epicentre. In Conda, 21 km away, the estimate is intensity IV (light). 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 19 km, intensity IV · Conda 21 km, intensity IV · Montpelier 28 km, intensity IV. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 480 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 6.0 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 350× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 16× the energy of this one
  3. Magna, Utah 2020 M 5.7 11× the energy of this one
  4. This earthquake M 5.0 about 480 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 1,000× more

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 2.8 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 · 42 km ENE of this epicentre
  2. 5.3 Southeastern Idaho · 50 km N of this epicentre
  3. 5.3 29 km WSW of Freedom, Idaho · 40 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 42.5629, -111.4155. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Caribou County, ID 27 km (17 mi) NNW earthquakes near Caribou County
Bear Lake County, ID 32 km (20 mi) SSE earthquakes near Bear Lake County
Franklin County, ID 55 km (34 mi) SW earthquakes near Franklin County
Bannock County, ID 68 km (42 mi) WNW earthquakes near Bannock County
Lincoln County, WY 71 km (44 mi) ESE earthquakes near Lincoln County
Bonneville County, ID 94 km (58 mi) N earthquakes near Bonneville 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 14 km ESE of Soda Springs, Idaho
  2. 2.5 10 km NNW of Georgetown, Idaho
  3. 1.6 13 km NNW of Georgetown, Idaho
  4. 2.0 13 km NNW of Georgetown, Idaho
  5. 2.6 9 km NNW of Georgetown, Idaho
  6. 2.8 13 km NW of Georgetown, Idaho
  7. 2.5 11 km NNW of Georgetown, Idaho
  8. 2.6 14 km NNW of Georgetown, Idaho
  9. 2.0 7 km NNW of Georgetown, Idaho
  10. 3.4 9 km NNW of Georgetown, Idaho
  11. 3.1 8 km NNW of Georgetown, Idaho
  12. 2.2 14 km ESE of Soda Springs, Idaho
  13. 2.7 10 km NNW of Georgetown, Idaho
  14. 3.0 8 km NNW of Georgetown, Idaho
  15. 2.6 12 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.