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M1.0 Depth: 12.6 km

M1.0 Earthquake near 10 km SE of Winchester, CA (United States)

UTC time: 2025-08-04 19:43:59 UTC Local time: —

About this earthquake

On August 4, 2025 at 19:43 UTC, a magnitude M1.0 earthquake occurred near 10 km SE of Winchester, CA (United States). With a focal depth of about 13 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: over the past 24 hours, QuakeMap24 logged 232 earthquakes, the strongest at M4.1.

Details

Magnitude
M1.0
Depth
12.6 km
UTC time
2025-08-04 19:43:59 UTC
Local time
—
Country
United States
City
California
Source
usgs
Coordinates
33.64300, -117.01217
Temperature
32.3°C

Map

Depth profile

Depth profile Depth: 12.6 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 12.6 km
Shallow
12.6 km
12.6 km — close to the regional average (15.3 km)
Regional average: 15.3 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: 139 km ·Lava dome(s) ·Elevation: -40 m ·Last eruption: 210 ·United States
  • Ubehebe Craters
    Distance: 378 km ·Maar(s) ·Elevation: 752 m ·Last eruption: -150 ·United States
  • Pinacate
    Distance: 384 km ·Volcanic field ·Elevation: 1'183 m ·Mexico
  • Uinkaret Field
    Distance: 466 km ·Volcanic field ·Elevation: 1'555 m ·Last eruption: 1100 ·United States
  • San Luis, Isla
    Distance: 476 km ·Tuff cone ·Elevation: 183 m ·Last eruption: -1141 ·Mexico
  • Mammoth Mountain
    Distance: 480 km ·Lava dome(s) ·Elevation: 3'369 m ·Last eruption: 1260 ·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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