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M1.4 Depth: 8.0 km

M1.4 Earthquake near 23 km SSW of Mammoth, Wyoming (United States)

UTC time: 2025-08-20 19:18:12 UTC Local time: —

About this earthquake

A magnitude M1.4 earthquake was recorded near 23 km SSW of Mammoth, Wyoming (United States) on August 20, 2025 at 19:18 UTC. With a focal depth of about 8 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Events of this size typically go unnoticed.

The data is provided by USGS and cross-checked across seismological networks. United States: 200 earthquakes were recorded in the past 24 hours, the strongest reaching M3.7.

Details

Magnitude
M1.4
Depth
8.0 km
UTC time
2025-08-20 19:18:12 UTC
Local time
—
Country
United States
City
Wyoming
Source
usgs
Coordinates
44.79733, -110.85317
Temperature
23.1°C

Map

Depth profile

Depth profile Depth: 8 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 8 km
Shallow
8 km
8 km — shallower than the regional average (15.4 km)
Regional average: 15.4 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: 193 km ·Shield ·Elevation: 1'632 m ·Last eruption: -3250 ·United States
  • Craters of the Moon
    Distance: 264 km ·Volcanic field ·Elevation: 2'005 m ·Last eruption: -130 ·United States
  • Wapi Lava Field
    Distance: 285 km ·Shield ·Elevation: 1'597 m ·Last eruption: -300 ·United States
  • Black Butte Crater Lava Field
    Distance: 332 km ·Shield ·Elevation: 1'478 m ·Last eruption: -8180 ·United States

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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