QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5ml

Earthquake near Preston, ID

No earthquake was likely felt in Preston in the 24 hours to 4:35 pm MST (23:35 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 1.5 earthquake was recorded 23 km (14 mi) east-northeast of Preston, ID, at 6:55 am MDT on 9 May 2025 (12:55 UTC), less than 1 km deep.

USGS: 17 km W of Bloomington, Idaho

51 km (32 mi) NNE of Logan, UT

6:55 am MDT, May 9, 2025 · · -1.8 km deep · released about 5.7 lb of TNT

10 km30 km60 km120 km N Franklin County 17 kmBear Lake County 27 kmCache County 49 kmRich County 67 kmCaribou County 69 kmOneida County 75 kmLincoln County 77 kmBannock County 77 kmWeber County 102 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
6:55 am MDT on 9 May 2025 ()
Where
23 km (14 mi) east-northeast of Preston, ID · earthquakes near Preston
Idaho today
every earthquake in Idaho in the last 24 hours
Magnitude
M 1.5 (ml)
Depth
-1.8 km below the surface
Felt
no reports yet
Nearest
Franklin County, 17 km W
Nearest mapped fault
East Cache fault, 8 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 551 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 10 km (6 mi) from the epicentre. In Preston, 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: Lewiston.

How big was it?

This earthquake released about 5.7 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,600,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,900,000× the energy of this one
  3. Around the size people start to feel M 3.0 170× the energy of this one
  4. This earthquake M 1.5 about 5.7 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 5.0 on 2017-09-10 — about 170,000 times the energy of this one.

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 · 27 km SSE of this epicentre
  2. 5.2 16 km ENE of North Logan, Utah · 40 km S of this epicentre
  3. 5.0 2 km S of Richmond, Utah · 34 km SSW 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 42.1643, -111.6160. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Franklin County, ID 17 km (11 mi) W earthquakes near Franklin County
Bear Lake County, ID 27 km (17 mi) ENE earthquakes near Bear Lake County
Cache County, UT 49 km (30 mi) SSW earthquakes near Cache County
Rich County, UT 67 km (42 mi) SSE earthquakes near Rich County
Caribou County, ID 69 km (43 mi) N earthquakes near Caribou County
Oneida County, ID 75 km (46 mi) W earthquakes near Oneida County

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

Aftershocks so far

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

  1. 2.5 15 km SW of Georgetown, Idaho
  2. 1.8 11 km E of Georgetown, Idaho
  3. 2.1 13 km ENE of Hyde Park, Utah
  4. 2.3 8 km SW of Georgetown, Idaho
  5. 2.9 7 km W of Bennington, Idaho
  6. 0.8 9 km W of Garden, Utah
  7. 1.8 1 km SE of Cornish, Utah
  8. 1.7 1 km SE of Cornish, Utah
  9. 1.6 9 km NW of Georgetown, Idaho
  10. 1.9 6 km W of Bennington, Idaho
  11. 1.8 7 km WSW of Bennington, Idaho
  12. 1.6 17 km E of North Logan, Utah
  13. 1.9 11 km NW of Georgetown, Idaho
  14. 1.9 9 km NW of Georgetown, Idaho
  15. 2.2 7 km WNW of Bennington, 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.