QuakeIndex

Earthquake · reviewed by a seismologist

M 0.9ml

Earthquake near Seeley Lake, MT

No earthquake was likely felt in Seeley Lake in the 24 hours to 7:39 am MST (14:39 UTC). The last one was M 3.1, 26 km (16 mi) ESE, at 8:34 pm MDT on 4 October 2026, estimated intensity II (weak) in town; 4 felt reports to USGS. Every earthquake near Seeley Lake

This page: a magnitude 0.9 earthquake was recorded 27 km (17 mi) north-northwest of Seeley Lake, MT, at 1:39 am MDT on 6 October 2026 (07:39 UTC), 10 km deep.

USGS: 15 km SE of Condon, Montana

1:39 am MDT, Oct 6, 2026 · · 10 km deep · released about 0.61 lb of TNT

10 km30 km60 km120 km N Lake County 46 kmMissoula County 50 kmPowell County 80 kmLewis and Clark County 96 kmFlathead County 104 kmTeton County 107 kmGranite County 114 kmMineral County 118 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
1:39 am MDT on 6 October 2026 ()
Where
27 km (17 mi) north-northwest of Seeley Lake, MT · earthquakes near Seeley Lake
Montana today
every earthquake in Montana in the last 24 hours
Magnitude
M 0.9 (ml)
Depth
10 km below the surface
Felt
no reports yet
Nearest
Lake County, 46 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 31 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

At this magnitude and depth it was probably too small to be felt, even directly above it. 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 0.61 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 1.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 25,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 18,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 1,600× the energy of this one
  4. This earthquake M 0.9 about 0.61 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 47.4175, -113.5752. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Lake County, MT 46 km (28 mi) WNW earthquakes near Lake County
Missoula County, MT 50 km (31 mi) SSW earthquakes near Missoula County
Powell County, MT 80 km (50 mi) SE earthquakes near Powell County
Lewis and Clark County, MT 96 km (60 mi) ESE earthquakes near Lewis and Clark County
Flathead County, MT 104 km (65 mi) NNW earthquakes near Flathead County
Teton County, MT 107 km (66 mi) ENE earthquakes near Teton County

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

Aftershocks so far

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

  1. 1.0 22 km N of Ovando, Montana
  2. 2.3 22 km N of Ovando, Montana
  3. 1.1 27 km ENE of Seeley Lake, Montana
  4. -0.0 19 km E of Finley Point, 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.