Earthquake · reviewed by a seismologist
M 4.2mwr
Earthquake near Conda, ID
No earthquake was likely felt in Conda in the 24 hours to 4:38 pm MST (23:38 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 4.2 earthquake was recorded 17 km (11 mi) south-southeast of Conda, ID, at 1:35 am MDT on 6 September 2017 (07:35 UTC), 7.2 km deep.
USGS: 13 km NNW of Georgetown, Idaho
- When
- 1:35 am MDT on 6 September 2017 ()
- Where
- 17 km (11 mi) south-southeast of Conda, ID · earthquakes near Conda
- Idaho today
- every earthquake in Idaho in the last 24 hours
- Magnitude
- M 4.2 (mwr)
- Depth
- 7.2 km below the surface
- Felt
- no reports yet
- Measured shaking
- intensity IV (ShakeMap)
- USGS impact alert
- green
- Nearest
- Caribou County, 24 km NNW
- Nearest mapped fault
- Western Bear Lake fault, 6 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
Earthquake alerts for Conda, ID
Get a notification in this browser when USGS records an earthquake near Conda, ID. No account or email needed.
Alerts are on for .
Not a warning. An alert comes after USGS publishes a quake, usually minutes after the shaking. For early warning use ShakeAlert, through your phone's Wireless Emergency Alerts or the MyShake app.
This was a light earthquake. It is usually felt clearly nearby and can rattle windows and dishes, but damage is uncommon.
At this magnitude and depth, people at rest would likely notice it out to about 112 km (70 mi) from the epicentre. In Conda, 17 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: Soda Springs 15 km, intensity IV · Conda 17 km, intensity III · Montpelier 32 km, intensity III. Estimated for each town centre; each link is that town's own record.
How big was it?
This earthquake released about 30 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 5.2 would have released about 32 times as much.
- Northridge, California 1994 M 6.7 5,600× the energy of this one
- Mineral, Virginia 2011 M 5.8 250× the energy of this one
- Magna, Utah 2020 M 5.7 180× the energy of this one
- This earthquake M 4.2 about 30 tons of TNT
- Around the size people start to feel M 3.0 this one released 63× 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 45 times the energy of this one.
Before 2016, the USGS record lists 3 earthquakes of M5 or more within 50 km:
- 5.8 4 km SSE of Auburn, Wyoming · 43 km ENE of this epicentre
- 5.3 Southeastern Idaho · 47 km NNE of this epicentre
- 5.3 29 km WSW of Freedom, Idaho · 38 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 42.5885, -111.4411. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Caribou County, ID | 24 km (15 mi) | NNW | earthquakes near Caribou County |
| Bear Lake County, ID | 35 km (22 mi) | SSE | earthquakes near Bear Lake County |
| Franklin County, ID | 56 km (35 mi) | SW | earthquakes near Franklin County |
| Bannock County, ID | 65 km (41 mi) | W | earthquakes near Bannock County |
| Lincoln County, WY | 74 km (46 mi) | ESE | earthquakes near Lincoln County |
| Bonneville County, ID | 91 km (56 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.
- 2.6 14 km E of Soda Springs, Idaho
- 2.3 12 km ENE of Soda Springs, Idaho
- 2.0 11 km NNW of Georgetown, Idaho
- 2.5 11 km NNW of Georgetown, Idaho
- 2.7 8 km NNW of Georgetown, Idaho
- 3.4 10 km NNW of Georgetown, Idaho
- 2.9 9 km NNW of Georgetown, Idaho
- 2.8 17 km NNE of Soda Springs, Idaho
- 3.1 12 km ESE of Soda Springs, Idaho
- 2.3 12 km NNW of Georgetown, Idaho
- 2.5 11 km NNW of Georgetown, Idaho
- 3.5 9 km NNW of Georgetown, Idaho
- 2.4 14 km ESE of Soda Springs, Idaho
- 2.1 10 km NNW of Georgetown, Idaho
- 1.7 11 km NNW of Georgetown, 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
- The official USGS event page — the source of record for every value above
- Did you feel it? Report it to USGS — reports go to USGS, not to us
- ShakeMap for this event, when USGS has produced one
QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.