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United States · California

M1.0 Earthquake near Castle Rock Springs, California (United States)

UTC time: 2026-10-01 04:48:42 UTC Local time: —
Magnitude
M1.0
Depth
1.0 km
Source
USGS

California · Castle Rock Springs

Country overview

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About this earthquake

A magnitude M1.0 earthquake was recorded near Castle Rock Springs, California (United States) on October 1, 2026 at 04:48 UTC. With a focal depth of about 1 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 event was recorded by USGS. United States: 186 earthquakes were recorded in the past 24 hours, the strongest reaching M4.2.

Details

ID
5fa4a6799faa49782a9e3cdec29121d456c9acfe
Magnitude
M1.0
Depth
1.0 km
UTC time
2026-10-01 04:48:42 UTC
Local time
—
Country
United States
State
California
City
Castle Rock Springs
County
Lake County
Source
usgs
Coordinates
38.76966, -122.71983
Temperature
24.7°C

Depth profile

Depth profile Depth: 1 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 1 km
Shallow
1 km
1 km — shallower than the regional average (15.2 km)
Regional average: 15.2 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: 23 km ·Volcanic field ·Elevation: 1'439 m ·United States
  • Lassen Volcanic Center
    Distance: 218 km ·Stratovolcano ·Elevation: 3'187 m ·Last eruption: 1917 ·United States
  • Shasta
    Distance: 297 km ·Stratovolcano ·Elevation: 4'317 m ·Last eruption: 1250 ·United States
  • Medicine Lake
    Distance: 331 km ·Shield ·Elevation: 2'412 m ·Last eruption: 1060 ·United States
  • Mono Lake Volcanic Field
    Distance: 333 km ·Volcanic field ·Elevation: 2'121 m ·Last eruption: 1790 ·United States
  • Mono-Inyo Craters
    Distance: 340 km ·Lava dome(s) ·Elevation: 2'796 m ·Last eruption: 1380 ·United States

Radius · 50 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • Charles M. Schulz Sonoma County AirportUnited States · STS · KSTS
    30.1 kmStraight-line distance

Source: OurAirports · Dataset date: 2026-10-01

This selection shows geographic proximity, not a hazard zone or confirmed impacts. Distances use recorded site coordinates. Sources & data dates

California

Context for this earthquake

01 Oct 2025 – 01 Oct 2026 · M ≥ 2.0 · 2,445 Catalogue entries

Sufficiently reliable matching data are not currently available for a direct comparison. The area profile shows the available records and their limitations.

Open seismic profile

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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