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United States · Wyoming

M3.8 Earthquake near Sweetwater County, Wyoming (United States)

UTC time: 2026-09-12 05:25:49 UTC Local time: —

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About this earthquake

On September 12, 2026 at 05:25 UTC, a magnitude M3.8 earthquake occurred near Sweetwater County, Wyoming (United States). The hypocenter lay relatively close to the surface at around 4 km, increasing how strongly it was felt. Shaking of this size is frequently noticed but usually harmless.

The data is provided by USGS and cross-checked across seismological networks. United States: 241 earthquakes were recorded in the past 24 hours, the strongest reaching M5.4.

Details

ID
622969cdfd118c8cbbca8fb66550b0d0a37bb0ec
Magnitude
M3.8
Depth
4.0 km
UTC time
2026-09-12 05:25:49 UTC
Local time
—
Country
United States
State
Wyoming
City
Sweetwater County
County
Sweetwater County
Source
usgs
Coordinates
41.74900, -109.80867
Temperature
15.8°C

Depth profile

Depth profile Depth: 4 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 4 km
Shallow
4 km
4 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: 290 km ·Shield ·Elevation: 1'632 m ·Last eruption: -3250 ·United States
  • Wapi Lava Field
    Distance: 307 km ·Shield ·Elevation: 1'597 m ·Last eruption: -300 ·United States
  • Dotsero
    Distance: 329 km ·Maar ·Elevation: 2'230 m ·Last eruption: -2200 ·United States
  • Craters of the Moon
    Distance: 351 km ·Volcanic field ·Elevation: 2'005 m ·Last eruption: -130 ·United States
  • Black Rock Desert
    Distance: 384 km ·Volcanic field ·Elevation: 1'800 m ·Last eruption: 1290 ·United States
  • Black Butte Crater Lava Field
    Distance: 406 km ·Shield ·Elevation: 1'478 m ·Last eruption: -8180 ·United States

United States

Context for this earthquake

12 Sep 2025 – 12 Sep 2026 · M ≥ 3.0 · 1,423 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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Country statistics · United States

Country overview
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