Earthquake · reviewed by a seismologist
M 2.9ml
Earthquake near Conda, ID
No earthquake was likely felt in Conda in the 24 hours to 9:10 am MST (16:10 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 2.9 earthquake was recorded 41 km (25 mi) east-northeast of Conda, ID, at 4:39 pm MDT on 15 August 2023 (22:39 UTC), 1.2 km deep. 12 people have reported feeling it to USGS.
USGS: 7 km WSW of Thayne, Wyoming
- When
- 4:39 pm MDT on 15 August 2023 ()
- Where
- 41 km (25 mi) east-northeast of Conda, ID · earthquakes near Conda
- Magnitude
- M 2.9 (ml)
- Depth
- 1.2 km below the surface
- Felt
- 12 reports · strongest reported intensity IV
- Nearest
- Caribou County, 39 km WSW
- Nearest mapped fault
- Grand Valley fault, 14 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 1111 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 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 32 km (20 mi) from the epicentre. In Conda, 41 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: Star Valley Ranch 14 km, intensity III. Estimated for each town centre; each link is that town's own record.
How big was it?
This earthquake released about 680 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.9 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 22,000× the energy of this one
- Magna, Utah 2020 M 5.7 16,000× the energy of this one
- Around the size people start to feel M 3.0 1.4× the energy of this one
- This earthquake M 2.9 about 680 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 4,000 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 · 17 km SSE of this epicentre
- 5.3 Southeastern Idaho · 21 km NW of this epicentre
- 5.3 29 km WSW of Freedom, Idaho · 25 km W 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 42.8924, -111.0856. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Caribou County, ID | 39 km (24 mi) | WSW | earthquakes near Caribou County |
| Bear Lake County, ID | 70 km (44 mi) | SSW | earthquakes near Bear Lake County |
| Bonneville County, ID | 71 km (44 mi) | NW | earthquakes near Bonneville County |
| Lincoln County, WY | 81 km (50 mi) | SSE | earthquakes near Lincoln County |
| Bannock County, ID | 96 km (60 mi) | WSW | earthquakes near Bannock County |
| Sublette County, WY | 96 km (60 mi) | E | earthquakes near Sublette 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.
- 1.9 13 km SW of Fairview, Wyoming
- 2.6 13 km SW of Fairview, Wyoming
- 2.0 4 km NNE of Alpine Northeast, Wyoming
- 2.1 7 km NW of Georgetown, Idaho
- 2.3 17 km NE of Star Valley Ranch, Wyoming
- 2.8 15 km NE of Star Valley Ranch, Wyoming
- 2.4 7 km W of Hoback, Wyoming
- 2.7 6 km E of Etna, Wyoming
- 1.6 8 km W of Hoback, Wyoming
- 3.1 10 km W of Hoback, Wyoming
- 2.1 8 km WNW of Hoback, Wyoming
- 1.8 8 km W of Hoback, Wyoming
- 3.1 10 km WSW of Hoback, Wyoming
- 2.1 7 km E of Alpine Northeast, Wyoming
- 2.5 8 km E of Star Valley Ranch, Wyoming
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.