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M1.0 Depth: 4.1 km

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

UTC time: 2026-08-01 00:21:25 UTC Local time: —

About this earthquake

On August 1, 2026 at 00:21 UTC, a magnitude M1.0 earthquake occurred near Asti, California (United States). The hypocenter lay relatively close to the surface at around 4 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: 172 earthquakes were recorded in the past 24 hours, the strongest reaching M3.2.

Details

Magnitude
M1.0
Depth
4.1 km
UTC time
2026-08-01 00:21:25 UTC
Local time
—
Country
United States
State
California
City
Asti
County
Sonoma County
Source
usgs
Coordinates
38.76467, -122.95834
Temperature
30.3°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 (15.5 km)
Regional average: 15.5 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: 28 km ·Volcanic field ·Elevation: 1'439 m ·United States
  • Lassen Volcanic Center
    Distance: 229 km ·Stratovolcano ·Elevation: 3'187 m ·Last eruption: 1917 ·United States
  • Shasta
    Distance: 301 km ·Stratovolcano ·Elevation: 4'317 m ·Last eruption: 1250 ·United States
  • Medicine Lake
    Distance: 338 km ·Shield ·Elevation: 2'412 m ·Last eruption: 1060 ·United States
  • Mono Lake Volcanic Field
    Distance: 353 km ·Volcanic field ·Elevation: 2'121 m ·Last eruption: 1790 ·United States
  • Mono-Inyo Craters
    Distance: 359 km ·Lava dome(s) ·Elevation: 2'796 m ·Last eruption: 1380 ·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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