QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

Earthquake near Sun Valley, ID

No earthquake was likely felt in Sun Valley in the 24 hours to 8:50 am MST (15:50 UTC). The last one was M 4.3, 66 km (41 mi) NNE, at 11:05 am MDT on 8 June 2025, estimated intensity III (weak) in town; 27 felt reports to USGS. Every earthquake near Sun Valley

This page: a magnitude 1.7 earthquake was recorded 23 km (15 mi) north-northwest of Sun Valley, ID, at 2:44 pm MST on 16 November 2023 (21:44 UTC), 6.3 km deep.

USGS: 23 km NNW of Sun Valley, Idaho

2:44 pm MST, Nov 16, 2023 · · 6.3 km deep · released about 11 lb of TNT

10 km30 km60 km120 km N Camas County 47 kmCuster County 49 kmBlaine County 70 kmElmore County 94 kmBoise County 97 kmLincoln County 102 kmGooding County 103 kmButte County 109 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
2:44 pm MST on 16 November 2023 ()
Where
23 km (15 mi) north-northwest of Sun Valley, ID · earthquakes near Sun Valley
Idaho today
every earthquake in Idaho in the last 24 hours
Magnitude
M 1.7 (ml)
Depth
6.3 km below the surface
Felt
no reports yet
Nearest
Camas County, 47 km SSW
Nearest mapped fault
Sawtooth fault, 20 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 1092 days ago

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 11 km (7 mi) from the epicentre. In Sun Valley, 23 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.

Earthquakes near other towns within 30 km: Ketchum.

How big was it?

This earthquake released about 11 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,300,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 930,000× the energy of this one
  3. Around the size people start to feel M 3.0 83× the energy of this one
  4. This earthquake M 1.7 about 11 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

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

Before 2016, the USGS record since 1900 lists no earthquake of M5 or more within 50 km.

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 43.8753, -114.5083. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Camas County, ID 47 km (29 mi) SSW earthquakes near Camas County
Custer County, ID 49 km (30 mi) NNE earthquakes near Custer County
Blaine County, ID 70 km (43 mi) SE earthquakes near Blaine County
Elmore County, ID 94 km (58 mi) SW earthquakes near Elmore County
Boise County, ID 97 km (61 mi) W earthquakes near Boise County
Lincoln County, ID 102 km (64 mi) SSE earthquakes near Lincoln County

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

Aftershocks so far

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

  1. 1.6 8 km ENE of Stanley, Idaho
  2. 1.5 11 km WSW of Clayton, Idaho
  3. 1.6 10 km ENE of Stanley, Idaho
  4. 2.1 16 km SSE of Stanley, Idaho
  5. 2.5 16 km SSE of Stanley, Idaho
  6. 1.9 15 km SSE of Stanley, Idaho
  7. 2.1 15 km SSE of Stanley, Idaho
  8. 1.6 11 km ENE of Stanley, Idaho
  9. 1.7 11 km ENE of Stanley, Idaho
  10. 2.4 11 km ENE of Stanley, Idaho
  11. 1.6 11 km ENE of Stanley, Idaho
  12. 2.3 20 km SSW of Clayton, Idaho
  13. 1.7 8 km ENE of Stanley, Idaho
  14. 1.5 9 km ENE of Stanley, Idaho
  15. 1.8 8 km ENE of Stanley, 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.