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M1.0 Depth: 15.5 km

M1.0 Earthquake near 3 km E of Fontana, CA (United States)

UTC time: 2025-12-22 22:17:30 UTC Local time: —

About this earthquake

On December 22, 2025 at 22:17 UTC, a magnitude M1.0 earthquake occurred near 3 km E of Fontana, CA (United States). With a focal depth of about 16 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. 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 236 earthquakes, the strongest at M6.0.

Details

Magnitude
M1.0
Depth
15.5 km
UTC time
2025-12-22 22:17:30 UTC
Local time
—
Country
United States
City
California
Source
usgs
Coordinates
34.09467, -117.42233
Temperature
18.9°C

Map

Depth profile

Depth profile Depth: 15.5 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 15.5 km
Shallow
15.5 km
15.5 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

  • Salton Buttes
    Distance: 195 km ·Lava dome(s) ·Elevation: -40 m ·Last eruption: 210 ·United States
  • Ubehebe Craters
    Distance: 325 km ·Maar(s) ·Elevation: 752 m ·Last eruption: -150 ·United States
  • Mammoth Mountain
    Distance: 419 km ·Lava dome(s) ·Elevation: 3'369 m ·Last eruption: 1260 ·United States
  • Mono-Inyo Craters
    Distance: 437 km ·Lava dome(s) ·Elevation: 2'796 m ·Last eruption: 1380 ·United States
  • Pinacate
    Distance: 443 km ·Volcanic field ·Elevation: 1'183 m ·Mexico
  • Mono Lake Volcanic Field
    Distance: 458 km ·Volcanic field ·Elevation: 2'121 m ·Last eruption: 1790 ·United States

Historic earthquake map · United States

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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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