QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

Earthquake near Conda, ID

No earthquake was likely felt in Conda in the 24 hours to 10:45 pm MST (05:45 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 1.8 earthquake was recorded 40 km (25 mi) south of Conda, ID, at 1:33 am MDT on 30 July 2020 (07:33 UTC), less than 1 km deep.

USGS: 16 km W of Bennington, Idaho

1:33 am MDT, Jul 30, 2020 · · -3.3 km deep · released about 13 lb of TNT

10 km30 km60 km120 km N Bear Lake County 18 kmFranklin County 33 kmCaribou County 46 kmBannock County 68 kmLincoln County 71 kmCache County 73 kmOneida County 85 kmRich County 86 kmBonneville County 114 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
1:33 am MDT on 30 July 2020 ()
Where
40 km (25 mi) south of Conda, ID · earthquakes near Conda
Idaho today
every earthquake in Idaho in the last 24 hours
Magnitude
M 1.8 (ml)
Depth
-3.3 km below the surface
Felt
no reports yet
Nearest
Bear Lake County, 18 km ESE
Nearest mapped fault
Western Bear Lake fault, 11 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 2295 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 13 km (8 mi) from the epicentre. In Conda, 40 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: Montpelier.

How big was it?

This earthquake released about 13 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 810,000× the energy of this one
  3. Around the size people start to feel M 3.0 72× the energy of this one
  4. This earthquake M 1.8 about 13 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 200,000 times the energy of this one.

Before 2016, the USGS record lists one earthquake of M5 or more within 50 km:

  1. 5.8 8 km W of Garden City, Utah · 48 km S 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 42.3713, -111.5197. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Bear Lake County, ID 18 km (11 mi) ESE earthquakes near Bear Lake County
Franklin County, ID 33 km (21 mi) SW earthquakes near Franklin County
Caribou County, ID 46 km (29 mi) N earthquakes near Caribou County
Bannock County, ID 68 km (42 mi) WNW earthquakes near Bannock County
Lincoln County, WY 71 km (44 mi) ESE earthquakes near Lincoln County
Cache County, UT 73 km (46 mi) SSW earthquakes near Cache 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. 1.8 16 km WSW of Georgetown, Idaho
  2. 2.4 17 km WSW of Georgetown, Idaho
  3. 1.7 8 km W of Bennington, Idaho
  4. 1.7 5 km NW of Georgetown, Idaho
  5. 1.8 7 km WNW of Georgetown, Idaho
  6. 1.7 12 km W of Bloomington, Idaho
  7. 2.1 13 km ESE of Soda Springs, Idaho
  8. 1.7 2 km WNW of Franklin, Idaho
  9. 1.8 10 km E of Franklin, Idaho
  10. 1.9 1 km WNW of Franklin, Idaho
  11. 2.2 7 km E of Bancroft, Idaho
  12. 1.6 4 km S of Grace, Idaho
  13. 1.5 2 km WNW of Franklin, Idaho
  14. 1.9 16 km SW of Fairview, Wyoming
  15. 1.8 17 km NW of Paris, 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.