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M1.9 Depth: 13.3 km

M1.9 Earthquake near 3 km NNW of Piedmont, CA (United States)

UTC time: 2025-12-25 06:30:06 UTC Local time: —

About this earthquake

A magnitude M1.9 earthquake was recorded near 3 km NNW of Piedmont, CA (United States) on December 25, 2025 at 06:30 UTC. The hypocenter lay relatively close to the surface at around 13 km, increasing how strongly it was felt. Earthquakes of this small magnitude are usually barely noticeable and cause no damage.

The event was recorded by USGS. United States: over the past 24 hours, QuakeMap24 logged 192 earthquakes, the strongest at M4.7.

Details

Magnitude
M1.9
Depth
13.3 km
UTC time
2025-12-25 06:30:06 UTC
Local time
—
Country
United States
City
California
Source
usgs
Coordinates
37.84983, -122.24433
Temperature
12.7°C

Map

Depth profile

Depth profile Depth: 13.3 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 13.3 km
Shallow
13.3 km
13.3 km — close to 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

  • Clear Lake Volcanic Field
    Distance: 133 km ·Volcanic field ·Elevation: 1'439 m ·United States
  • Mono Lake Volcanic Field
    Distance: 282 km ·Volcanic field ·Elevation: 2'121 m ·Last eruption: 1790 ·United States
  • Mono-Inyo Craters
    Distance: 282 km ·Lava dome(s) ·Elevation: 2'796 m ·Last eruption: 1380 ·United States
  • Mammoth Mountain
    Distance: 283 km ·Lava dome(s) ·Elevation: 3'369 m ·Last eruption: 1260 ·United States
  • Lassen Volcanic Center
    Distance: 301 km ·Stratovolcano ·Elevation: 3'187 m ·Last eruption: 1917 ·United States
  • Soda Lakes
    Distance: 346 km ·Maar(s) ·Elevation: 1'251 m ·United States

Historic earthquake map · United States

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Country statistics · United States

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

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