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United States · Montana

M2.9 Earthquake near Jefferson County, Montana (United States)

UTC time: 2026-04-27 03:32:34 UTC Local time: —

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About this earthquake

On April 27, 2026 at 03:32 UTC, a magnitude M2.9 earthquake occurred near Jefferson County, Montana (United States). With a focal depth of about 13 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Events of this size typically go unnoticed.

The event was recorded by EMSC. United States: 184 earthquakes were recorded in the past 24 hours, the strongest reaching M4.6.

Details

ID
15cd9891a487882ff70c1b710972c9063a5a4e37
Magnitude
M2.9
Depth
12.7 km
UTC time
2026-04-27 03:32:34 UTC
Local time
—
Country
United States
State
Montana
City
Jefferson County
County
Jefferson County
Source
emsc
Coordinates
45.98540, -112.31350
Temperature
-3.6°C

Depth profile

Depth profile Depth: 12.7 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 12.7 km
Shallow
12.7 km
12.7 km — close to 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

Felt reports

2felt reports at EMSC / LastQuake

Voluntary reports of feeling this earthquake. The count is not an intensity measurement and is not added to USGS DYFI reports.

Data updated: Apr 28, 2026, 10:48 PM UTC · Last checked: Sep 6, 2026, 12:18 PM UTC

Source: EMSC / LastQuake

Volcanoes nearby

  • Hell's Half Acre
    Distance: 277 km ·Shield ·Elevation: 1'632 m ·Last eruption: -3250 ·United States
  • Craters of the Moon
    Distance: 305 km ·Volcanic field ·Elevation: 2'005 m ·Last eruption: -130 ·United States
  • Black Butte Crater Lava Field
    Distance: 351 km ·Shield ·Elevation: 1'478 m ·Last eruption: -8180 ·United States
  • Wapi Lava Field
    Distance: 352 km ·Shield ·Elevation: 1'597 m ·Last eruption: -300 ·United States

Radius · 50 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

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

Source: OurAirports · Dataset date: 2026-11-10

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

Open history map
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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