QuakeIndex

Earthquake · reviewed by a seismologist

M 2.0ml

Earthquake near Conrad, MT

No earthquake was likely felt in Conrad in the 24 hours to 5:30 am MST (12:30 UTC). The last one was M 4.2, 80 km (50 mi) SE, at 12:41 pm MST on 29 January 2026, estimated intensity II (weak) in town; 938 felt reports to USGS. Every earthquake near Conrad

This page: a magnitude 2.0 earthquake was recorded 41 km (26 mi) west-southwest of Conrad, MT, at 4:05 am MDT on 25 July 2018 (10:05 UTC), 6.1 km deep.

USGS: 13 km WNW of Bynum, Montana

4:05 am MDT, Jul 25, 2018 · · 6.1 km deep · released about 28 lb of TNT

10 km30 km60 km120 km N Pondera County 27 kmTeton County 29 kmGlacier County 83 kmToole County 86 kmLewis and Clark County 103 kmCascade 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
4:05 am MDT on 25 July 2018 ()
Where
41 km (26 mi) west-southwest of Conrad, MT · earthquakes near Conrad
Montana today
every earthquake in Montana in the last 24 hours
Magnitude
M 2.0 (ml)
Depth
6.1 km below the surface
Felt
no reports yet
Nearest
Pondera County, 27 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3031 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 Conrad, 41 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 28 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 540,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 380,000× the energy of this one
  3. Around the size people start to feel M 3.0 34× the energy of this one
  4. This earthquake M 2.0 about 28 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 48.0440, -112.4672. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Pondera County, MT 27 km (17 mi) NE earthquakes near Pondera County
Teton County, MT 29 km (18 mi) SSE earthquakes near Teton County
Glacier County, MT 83 km (52 mi) NNW earthquakes near Glacier County
Toole County, MT 86 km (53 mi) NE earthquakes near Toole County
Lewis and Clark County, MT 103 km (64 mi) S earthquakes near Lewis and Clark County
Cascade County, MT 116 km (72 mi) SE earthquakes near Cascade County

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

Aftershocks so far

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

  1. 1.6 18 km SW of Bynum, Montana
  2. 1.9 17 km NNW of Dupuyer, Montana
  3. 2.3 8 km S of Valier, Montana

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.