QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9ml

Earthquake near Conda, ID

No earthquake was likely felt in Conda in the 24 hours to 8:14 pm MST (03:14 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 1.9 earthquake was recorded 49 km (30 mi) northeast of Conda, ID, at 2:36 am MST on 28 November 2019 (09:36 UTC), 2.9 km deep.

USGS: southern Idaho

2:36 am MST, Nov 28, 2019 · · 2.9 km deep · released about 19 lb of TNT

10 km30 km60 km120 km N Caribou County 45 kmBonneville County 52 kmTeton County 77 kmBear Lake County 89 kmMadison County 89 kmBannock County 97 kmLincoln County 101 kmBingham County 102 kmSublette County 107 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
2:36 am MST on 28 November 2019 ()
Where
49 km (30 mi) northeast of Conda, ID · earthquakes near Conda
Idaho today
every earthquake in Idaho in the last 24 hours
Magnitude
M 1.9 (ml)
Depth
2.9 km below the surface
Felt
no reports yet
Nearest
Caribou County, 45 km SW
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 2541 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 14 km (9 mi) from the epicentre. In Conda, 49 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.

Earthquakes near other towns within 30 km: Star Valley Ranch.

How big was it?

This earthquake released about 19 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 790,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 560,000× the energy of this one
  3. Around the size people start to feel M 3.0 50× the energy of this one
  4. This earthquake M 1.9 about 19 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 lists 3 earthquakes of M5 or more within 50 km:

  1. 5.8 4 km SSE of Auburn, Wyoming · 38 km SSE of this epicentre
  2. 5.3 Southeastern Idaho · 14 km SW of this epicentre
  3. 5.3 29 km WSW of Freedom, Idaho · 25 km SW 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 43.0723, -111.1587. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Caribou County, ID 45 km (28 mi) SW earthquakes near Caribou County
Bonneville County, ID 52 km (32 mi) NW earthquakes near Bonneville County
Teton County, ID 77 km (48 mi) N earthquakes near Teton County
Bear Lake County, ID 89 km (55 mi) S earthquakes near Bear Lake County
Madison County, ID 89 km (55 mi) NNW earthquakes near Madison County
Bannock County, ID 97 km (60 mi) WSW earthquakes near Bannock 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.

  1. 2.1 7 km SSE of Hoback, Wyoming
  2. 1.9 1 km E of Alpine Northeast, Wyoming
  3. 1.7 southern Idaho
  4. 1.6 5 km SSW of Alpine, Wyoming
  5. 2.7 6 km S of Alpine, Wyoming
  6. 2.2 southern Idaho
  7. 2.1 12 km W of Wilson, Wyoming
  8. 1.7 15 km WSW of Fairview, Wyoming
  9. 2.2 35 km W of Freedom, Idaho
  10. 1.9 8 km NW of Hoback, Wyoming
  11. 1.8 6 km NNE of Alpine Northeast, Wyoming
  12. 2.1 16 km WSW of Rafter J Ranch, Wyoming
  13. 1.7 15 km ENE of Soda Springs, Idaho
  14. 3.1 21 km WNW of Auburn, Wyoming
  15. 2.1 11 km WNW of Hoback, 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

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.