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United States · Montana

M2.1 Earthquake near Madison County, Montana (United States)

UTC time: 2026-10-16 15:31:23 UTC Local time: —

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About this earthquake

On October 16, 2026 at 15:31 UTC, a magnitude M2.1 earthquake occurred near Madison County, Montana (United States). With a focal depth of about 4 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Earthquakes of this small magnitude are usually barely noticeable and cause no damage.

The event was recorded by USGS. United States: 137 earthquakes were recorded in the past 24 hours, the strongest reaching M3.9.

Details

ID
529937fbf9658b435cb4a3cf8b0c2c4e17372fa0
Magnitude
M2.1
Depth
4.2 km
UTC time
2026-10-16 15:31:23 UTC
Local time
—
Country
United States
State
Montana
City
Madison County
County
Madison County
Source
usgs
Coordinates
45.60833, -112.15183
Temperature
5.2°C

Depth profile

Depth profile Depth: 4.2 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 4.2 km
Shallow
4.2 km
4.2 km — shallower than the regional average (15.2 km)
Regional average: 15.2 km
Why depth matters

Shallow quakes release energy near the surface — shaking is felt more strongly and damage potential is higher.

Depth classes per USGS

Volcanoes nearby

  • Hell's Half Acre
    Distance: 237 km ·Shield ·Elevation: 1'632 m ·Last eruption: -3250 ·United States
  • Craters of the Moon
    Distance: 271 km ·Volcanic field ·Elevation: 2'005 m ·Last eruption: -130 ·United States
  • Wapi Lava Field
    Distance: 314 km ·Shield ·Elevation: 1'597 m ·Last eruption: -300 ·United States
  • Black Butte Crater Lava Field
    Distance: 321 km ·Shield ·Elevation: 1'478 m ·Last eruption: -8180 ·United States

Radius · 50 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • Bert Mooney AirportUnited States · BTM · KBTM
    46.9 kmStraight-line distance

Source: OurAirports · Dataset date: 2026-10-05

This selection shows geographic proximity, not a hazard zone or confirmed impacts. Distances use recorded site coordinates. Sources & data dates

United States

Context for this earthquake

05 Oct 2025 – 05 Oct 2026 · M ≥ 2.0 · 11,838 Catalogue entries

Sufficiently reliable matching data are not currently available for a direct comparison. The area profile shows the available records and their limitations.

Open seismic profile

Historic earthquake map · United States

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Explore recent and long-term earthquake activity in this country. Use filters to narrow down by magnitude, depth, and date range.

Country statistics · United States

Country overview
View earthquake KPIs, strongest and latest events, and averages for this country.

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