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M3.4 Depth: 4.1 km

M3.4 Earthquake near 38.5 km ( 23.9 mi) E (az= 99.6) from Greenfield, CA (United States)

UTC time: 2025-12-20 07:51:35 UTC Local time: —

About this earthquake

A magnitude M3.4 earthquake was recorded near 38.5 km ( 23.9 mi) E (az= 99.6) from Greenfield, CA (United States) on December 20, 2025 at 07:51 UTC. The hypocenter lay relatively close to the surface at around 4 km, increasing how strongly it was felt. Earthquakes of this magnitude are often felt but rarely cause damage.

The event was recorded by SCEDC. United States: 219 earthquakes were recorded in the past 24 hours, the strongest reaching M6.0.

Details

Magnitude
M3.4
Depth
4.1 km
UTC time
2025-12-20 07:51:35 UTC
Local time
—
Country
United States
City
California
Source
scedc
Coordinates
36.26200, -120.82150
Temperature
9.2°C

Map

Depth profile

Depth profile Depth: 4.1 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 4.1 km
Shallow
4.1 km
4.1 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

  • Mammoth Mountain
    Distance: 220 km ·Lava dome(s) ·Elevation: 3'369 m ·Last eruption: 1260 ·United States
  • Mono-Inyo Craters
    Distance: 234 km ·Lava dome(s) ·Elevation: 2'796 m ·Last eruption: 1380 ·United States
  • Mono Lake Volcanic Field
    Distance: 250 km ·Volcanic field ·Elevation: 2'121 m ·Last eruption: 1790 ·United States
  • Ubehebe Craters
    Distance: 312 km ·Maar(s) ·Elevation: 752 m ·Last eruption: -150 ·United States
  • Clear Lake Volcanic Field
    Distance: 347 km ·Volcanic field ·Elevation: 1'439 m ·United States
  • Soda Lakes
    Distance: 401 km ·Maar(s) ·Elevation: 1'251 m ·United States

Historic earthquake map · United States

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Country statistics · United States

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

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