Back to map
M1.0 Depth: 7.4 km

M1.0 Earthquake near 22 km SSW of Mammoth, Wyoming (United States)

UTC time: 2025-12-30 21:38:35 UTC Local time: —

About this earthquake

On December 30, 2025 at 21:38 UTC, a magnitude M1.0 earthquake occurred near 22 km SSW of Mammoth, Wyoming (United States). The hypocenter lay relatively close to the surface at around 7 km, increasing how strongly it was felt. Earthquakes of this small magnitude are usually barely noticeable and cause no damage.

The data is provided by USGS and cross-checked across seismological networks. United States: over the past 24 hours, QuakeMap24 logged 188 earthquakes, the strongest at M4.3.

Details

Magnitude
M1.0
Depth
7.4 km
UTC time
2025-12-30 21:38:35 UTC
Local time
—
Country
United States
City
Wyoming
Source
usgs
Coordinates
44.80400, -110.84250
Temperature
-6.8°C

Map

Depth profile

Depth profile Depth: 7.4 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 7.4 km
Shallow
7.4 km
7.4 km — shallower than the regional average (15.7 km)
Regional average: 15.7 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: 194 km ·Shield ·Elevation: 1'632 m ·Last eruption: -3250 ·United States
  • Craters of the Moon
    Distance: 265 km ·Volcanic field ·Elevation: 2'005 m ·Last eruption: -130 ·United States
  • Wapi Lava Field
    Distance: 286 km ·Shield ·Elevation: 1'597 m ·Last eruption: -300 ·United States
  • Black Butte Crater Lava Field
    Distance: 334 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.

Share