QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

Earthquake near Preston, ID

No earthquake was likely felt in Preston in the 24 hours to 3:47 pm MST (22:47 UTC). The last one was M 3.8, 50 km (31 mi) NE, at 5:05 am MDT on 15 May 2026, estimated intensity II (weak) in town; 29 felt reports to USGS. Every earthquake near Preston

This page: a magnitude 1.7 earthquake was recorded 9 km (5 mi) southwest of Preston, ID, at 7:34 pm MDT on 1 June 2020 (01:34 UTC), 3.1 km deep.

USGS: 3 km E of Weston, Idaho

34 km (21 mi) NNW of Logan, UT · 140 km (87 mi) N of Salt Lake City, UT

7:34 pm MDT, Jun 1, 2020 · · 3.1 km deep · released about 9.6 lb of TNT

10 km30 km60 km120 km N Franklin County 18 kmCache County 37 kmOneida County 50 kmBear Lake County 58 kmRich County 74 kmBannock County 77 kmWeber County 85 kmCaribou County 90 kmBox Elder County 103 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
7:34 pm MDT on 1 June 2020 ()
Where
9 km (5 mi) southwest of Preston, ID · earthquakes near Preston
Idaho today
every earthquake in Idaho in the last 24 hours
Magnitude
M 1.7 (ml)
Depth
3.1 km below the surface
Felt
no reports yet
Nearest
Franklin County, 18 km NNE
Nearest mapped fault
West Cache fault, 13 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 2354 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 12 km (7 mi) from the epicentre. In Preston, 9 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: Lewiston, Richmond, Smithfield, Benson, Hyde Park.

How big was it?

This earthquake released about 9.6 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 1,600,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,100,000× the energy of this one
  3. Around the size people start to feel M 3.0 99× the energy of this one
  4. This earthquake M 1.7 about 9.6 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 8 km W of Garden City, Utah · 39 km ESE of this epicentre
  2. 5.2 16 km ENE of North Logan, Utah · 37 km SE of this epicentre
  3. 5.0 2 km S of Richmond, Utah · 19 km SE 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 42.0368, -111.9430. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Franklin County, ID 18 km (11 mi) NNE earthquakes near Franklin County
Cache County, UT 37 km (23 mi) SSE earthquakes near Cache County
Oneida County, ID 50 km (31 mi) WNW earthquakes near Oneida County
Bear Lake County, ID 58 km (36 mi) ENE earthquakes near Bear Lake County
Rich County, UT 74 km (46 mi) SE earthquakes near Rich County
Bannock County, ID 77 km (48 mi) NNW earthquakes near Bannock County

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

Aftershocks so far

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

  1. 1.6 12 km NNE of Howell, Utah
  2. 1.7 13 km E of North Logan, Utah
  3. 2.1 19 km W of Portage, Utah
  4. 2.2 8 km SSW of Portage, Utah
  5. 1.8 14 km ESE of Richmond, Utah
  6. 1.7 5 km E of Howell, Utah
  7. 1.5 5 km E of Howell, Utah
  8. 1.9 3 km N of Amalga, Utah
  9. 1.5 16 km W of Garden, Utah
  10. 2.4 5 km E of Howell, Utah
  11. 1.7 17 km W of Portage, Utah
  12. 2.3 18 km W of Portage, Utah
  13. 1.5 20 km NW of Paris, Idaho
  14. 1.7 12 km ESE of Millville, Utah
  15. 1.7 10 km WSW of Garden, Utah

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.