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M1.0 Depth: -0.4 km

M1.0 Earthquake near Angwin, California (United States)

UTC time: 2026-08-04 12:17:58 UTC Local time: —

About this earthquake

A magnitude M1.0 earthquake was recorded near Angwin, California (United States) on August 4, 2026 at 12:17 UTC. Events of this size typically go unnoticed.

The data is provided by USGS and cross-checked across seismological networks. United States: 158 earthquakes were recorded in the past 24 hours, the strongest reaching M4.1.

Details

Magnitude
M1.0
Depth
-0.4 km
UTC time
2026-08-04 12:17:58 UTC
Local time
—
Country
United States
State
California
City
Angwin
County
Napa County
Village
Angwin
Source
usgs
Coordinates
38.56967, -122.44950
Temperature
13.2°C

Map

Depth profile

Depth profile Depth: -0.4 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km -0.4 km
Shallow
-0.4 km
0 km — shallower than the regional average (15.5 km)
Regional average: 15.5 km
Negative depth = focus above sea level (terrain elevation).
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: 52 km ·Volcanic field ·Elevation: 1'439 m ·United States
  • Lassen Volcanic Center
    Distance: 228 km ·Stratovolcano ·Elevation: 3'187 m ·Last eruption: 1917 ·United States
  • Mono Lake Volcanic Field
    Distance: 305 km ·Volcanic field ·Elevation: 2'121 m ·Last eruption: 1790 ·United States
  • Mono-Inyo Craters
    Distance: 311 km ·Lava dome(s) ·Elevation: 2'796 m ·Last eruption: 1380 ·United States
  • Shasta
    Distance: 316 km ·Stratovolcano ·Elevation: 4'317 m ·Last eruption: 1250 ·United States
  • Mammoth Mountain
    Distance: 317 km ·Lava dome(s) ·Elevation: 3'369 m ·Last eruption: 1260 ·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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