Back to map
United States · California

M1.1 Earthquake near Castle Rock Springs, California (United States)

UTC time: 2026-10-03 17:35:11 UTC Local time: —
Magnitude
M1.1
Depth
2.1 km
Source
USGS

California · Castle Rock Springs

Country overview

Map

About this earthquake

A magnitude M1.1 earthquake was recorded near Castle Rock Springs, California (United States) on October 3, 2026 at 17:35 UTC. The hypocenter lay relatively close to the surface at around 2 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: over the past 24 hours, QuakeMap24 logged 155 earthquakes, the strongest at M4.1.

Details

ID
86565ee3ab74f6ddec28d28b5dd1c1a6f6b753c2
Magnitude
M1.1
Depth
2.1 km
UTC time
2026-10-03 17:35:11 UTC
Local time
—
Country
United States
State
California
City
Castle Rock Springs
County
Lake County
Source
usgs
Coordinates
38.78067, -122.71833
Temperature
29.4°C

Depth profile

Depth profile Depth: 2.1 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 2.1 km
Shallow
2.1 km
2.1 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: 22 km ·Volcanic field ·Elevation: 1'439 m ·United States
  • Lassen Volcanic Center
    Distance: 217 km ·Stratovolcano ·Elevation: 3'187 m ·Last eruption: 1917 ·United States
  • Shasta
    Distance: 296 km ·Stratovolcano ·Elevation: 4'317 m ·Last eruption: 1250 ·United States
  • Medicine Lake
    Distance: 330 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
    31.3 kmStraight-line distance

Source: OurAirports · Dataset date: 2026-10-03

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

03 Oct 2025 – 03 Oct 2026 · M ≥ 2.0 · 2,449 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

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.

Share