Back to map
United States · California

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

UTC time: 2026-11-15 04:09:00 UTC Local time: —

Map

About this earthquake

A magnitude M1.1 earthquake was recorded near Castle Hill, California (United States) on November 15, 2026 at 04:09 UTC. With a focal depth of about 9 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 NCEDC. United States: over the past 24 hours, QuakeMap24 logged 181 earthquakes, the strongest at M3.5.

Details

ID
dc131d4b715921cb6e32ca0d2036491bec8b122c
Magnitude
M1.1
Depth
8.6 km
UTC time
2026-11-15 04:09:00 UTC
Local time
—
Country
United States
State
California
City
Castle Hill
County
Contra Costa County
Village
Castle Hill
Source
ncedc
Coordinates
37.86450, -122.04533
Temperature
13.1°C

Depth profile

Depth profile Depth: 8.6 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 8.6 km
Shallow
8.6 km
8.6 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: 138 km ·Volcanic field ·Elevation: 1'439 m ·United States
  • Mono Lake Volcanic Field
    Distance: 265 km ·Volcanic field ·Elevation: 2'121 m ·Last eruption: 1790 ·United States
  • Mono-Inyo Craters
    Distance: 265 km ·Lava dome(s) ·Elevation: 2'796 m ·Last eruption: 1380 ·United States
  • Mammoth Mountain
    Distance: 266 km ·Lava dome(s) ·Elevation: 3'369 m ·Last eruption: 1260 ·United States
  • Lassen Volcanic Center
    Distance: 296 km ·Stratovolcano ·Elevation: 3'187 m ·Last eruption: 1917 ·United States
  • Soda Lakes
    Distance: 331 km ·Maar(s) ·Elevation: 1'251 m ·United States

Radius · 50 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • Buchanan FieldUnited States · CCR · KCCR
    14.0 kmStraight-line distance
  • Oakland San Francisco Bay AirportUnited States · OAK · KOAK
    22.3 kmStraight-line distance
  • San Francisco International AirportUnited States · SFO · KSFO
    39.7 kmStraight-line distance

Source: OurAirports · Dataset date: 2026-11-15

Nuclear power plants

  • Vallecitos nuclear power plantUnited StatesPermanently shut downReactor units at site: 1
    33.6 kmStraight-line distance

Source: Global Energy Monitor · Global Nuclear Power Tracker · Dataset date: 2026-08

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

05 Oct 2025 – 05 Oct 2026 · M ≥ 2.0 · 2,447 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