Earthquake · reviewed by a seismologist
M 1.5ml
Earthquake near Ketchum, ID
No earthquake was likely felt in Ketchum in the 24 hours to 6:47 am MST (13:47 UTC). The last one was M 4.3, 68 km (43 mi) NNE, at 11:05 am MDT on 8 June 2025, estimated intensity II (weak) in town; 27 felt reports to USGS. Every earthquake near Ketchum
This page: a magnitude 1.5 earthquake was recorded 42 km (26 mi) north-northwest of Ketchum, ID, at 4:42 am MDT on 8 July 2025 (10:42 UTC), 8.1 km deep.
USGS: 25 km SSW of Clayton, Idaho
- When
- 4:42 am MDT on 8 July 2025 ()
- Where
- 42 km (26 mi) north-northwest of Ketchum, ID · earthquakes near Ketchum
- Idaho today
- every earthquake in Idaho in the last 24 hours
- Magnitude
- M 1.5 (ml)
- Depth
- 8.1 km below the surface
- Felt
- no reports yet
- Nearest
- Custer County, 32 km NE
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 491 days ago
Earthquake alerts for Ketchum, ID
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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 minor earthquake. Quakes this small are rarely felt and do not cause damage.
At this magnitude and depth, people at rest would likely notice it out to about 7 km (4 mi) from the epicentre. In Ketchum, 42 km away, the estimate is intensity I (not felt). 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.
How big was it?
This earthquake released about 6.2 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 2,500,000× the energy of this one
- Magna, Utah 2020 M 5.7 1,700,000× the energy of this one
- Around the size people start to feel M 3.0 150× the energy of this one
- This earthquake M 1.5 about 6.2 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 4.3 on 2025-06-08 — about 14,000 times the energy of this one.
Before 2016, the USGS record lists 3 earthquakes of M5 or more within 50 km:
- 5.5 22 km E of Clayton, Idaho · 40 km NE of this epicentre
- 5.4 29 km NW of Mackay, Idaho · 47 km E of this epicentre
- 5.4 23 km E of Clayton, Idaho · 38 km NE 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 44.0430, -114.4952. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Custer County, ID | 32 km (20 mi) | NE | earthquakes near Custer County |
| Camas County, ID | 64 km (40 mi) | SSW | earthquakes near Camas County |
| Blaine County, ID | 84 km (52 mi) | SSE | earthquakes near Blaine County |
| Boise County, ID | 98 km (61 mi) | W | earthquakes near Boise County |
| Elmore County, ID | 107 km (66 mi) | SW | earthquakes near Elmore County |
| Lemhi County, ID | 110 km (68 mi) | NNE | earthquakes near Lemhi County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
30 earthquakes have been recorded within 50 km since this one.
- 2.6 25 km S of Clayton, Idaho
- 2.2 21 km W of Clayton, Idaho
- 2.9 4 km NNE of Stanley, Idaho
- 1.7 25 km SSE of Challis, Idaho
- 2.0 8 km SSW of Challis, Idaho
- 2.7 8 km N of Stanley, Idaho
- 2.6 26 km S of Clayton, Idaho
- 2.1 21 km ESE of Stanley, Idaho
- 2.4 29 km S of Clayton, Idaho
- 1.8 3 km NNW of Stanley, Idaho
- 2.1 14 km W of Clayton, Idaho
- 1.7 2 km NE of Clayton, Idaho
- 1.8 9 km NW of Clayton, Idaho
- 2.4 17 km NE of Stanley, Idaho
- 2.3 26 km E of Clayton, 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.