QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9ml

Earthquake near McCall, ID

No earthquake was likely felt in McCall in the 24 hours to 12:34 pm MST (19:34 UTC). The last one was M 4.3, 83 km (52 mi) WNW, at 12:42 am MST on 10 November 2026, estimated intensity II (weak) in town; 134 felt reports to USGS. Every earthquake near McCall

This page: a magnitude 2.9 earthquake was recorded 42 km (26 mi) south of McCall, ID, at 2:32 pm MDT on 1 September 2020 (20:32 UTC), 10 km deep. 4 people have reported feeling it to USGS.

USGS: 4 km NE of Cascade, Idaho

2:32 pm MDT, Sep 1, 2020 · · 10 km deep · released about 680 lb of TNT

10 km30 km60 km120 km N Valley County 46 kmAdams County 52 kmGem County 62 kmWashington County 64 kmBoise County 66 kmPayette County 84 kmCanyon County 116 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
2:32 pm MDT on 1 September 2020 ()
Where
42 km (26 mi) south of McCall, ID · earthquakes near McCall
Idaho today
every earthquake in Idaho in the last 24 hours
Magnitude
M 2.9 (ml)
Depth
10 km below the surface
Felt
4 reports · strongest reported intensity IV
Nearest
Valley County, 46 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2196 days ago

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 30 km (19 mi) from the epicentre. In McCall, 42 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.

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.

  1. Mineral, Virginia 2011 M 5.8 22,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 16,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.4× the energy of this one
  4. 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

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 44.5431, -116.0063. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Valley County, ID 46 km (29 mi) NE earthquakes near Valley County
Adams County, ID 52 km (32 mi) NW earthquakes near Adams County
Gem County, ID 62 km (39 mi) SSW earthquakes near Gem County
Washington County, ID 64 km (40 mi) W earthquakes near Washington County
Boise County, ID 66 km (41 mi) SSE earthquakes near Boise County
Payette County, ID 84 km (52 mi) SW earthquakes near Payette 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. 2.2 25 km WNW of Smiths Ferry, Idaho
  2. 2.4 31 km NNE of Lowman, Idaho
  3. 1.8 25 km E of Smiths Ferry, Idaho
  4. 1.8 13 km SSW of Donnelly, Idaho
  5. 2.4 6 km W of Smiths Ferry, Idaho
  6. 2.0 5 km WNW of Cascade, Idaho
  7. 2.1 6 km NNE of Smiths Ferry, Idaho
  8. 2.4 7 km W of Smiths Ferry, Idaho
  9. 2.1 39 km N of Lowman, Idaho
  10. 2.2 6 km N of Smiths Ferry, Idaho
  11. 3.1 6 km NNW of Smiths Ferry, Idaho
  12. 2.0 6 km WNW of Smiths Ferry, Idaho
  13. 2.1 2 km N of Smiths Ferry, Idaho
  14. 1.8 38 km N of Lowman, Idaho
  15. 2.2 7 km W of Smiths Ferry, 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.