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United States · California

M1.7 Earthquake near Norris Canyon, California (United States)

UTC time: 2026-09-28 22:06:14 UTC Local time: —

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About this earthquake

On September 28, 2026 at 22:06 UTC, a magnitude M1.7 earthquake occurred near Norris Canyon, California (United States). With a focal depth of about 8 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: 174 earthquakes were recorded in the past 24 hours, the strongest reaching M4.1.

Details

ID
0f052236f22d201b8eb32ec991d6d78698a47e60
Magnitude
M1.7
Depth
8.3 km
UTC time
2026-09-28 22:06:14 UTC
Local time
—
Country
United States
State
California
City
Norris Canyon
County
Contra Costa County
Village
Norris Canyon
Source
usgs
Coordinates
37.76433, -121.99416
Temperature
25.4°C

Depth profile

Depth profile Depth: 8.3 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 8.3 km
Shallow
8.3 km
8.3 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: 150 km ·Volcanic field ·Elevation: 1'439 m ·United States
  • Mono-Inyo Craters
    Distance: 261 km ·Lava dome(s) ·Elevation: 2'796 m ·Last eruption: 1380 ·United States
  • Mammoth Mountain
    Distance: 261 km ·Lava dome(s) ·Elevation: 3'369 m ·Last eruption: 1260 ·United States
  • Mono Lake Volcanic Field
    Distance: 261 km ·Volcanic field ·Elevation: 2'121 m ·Last eruption: 1790 ·United States
  • Lassen Volcanic Center
    Distance: 306 km ·Stratovolcano ·Elevation: 3'187 m ·Last eruption: 1917 ·United States
  • Soda Lakes
    Distance: 334 km ·Maar(s) ·Elevation: 1'251 m ·United States

Radius · 50 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • Oakland San Francisco Bay AirportUnited States · OAK · KOAK
    20.6 kmStraight-line distance
  • Buchanan FieldUnited States · CCR · KCCR
    25.7 kmStraight-line distance
  • San Carlos AirportUnited States · SQL · KSQL
    35.9 kmStraight-line distance

Source: OurAirports · Dataset date: 2026-09-28

Nuclear power plants

  • Vallecitos nuclear power plantUnited StatesPermanently shut downReactor units at site: 1
    22.0 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

28 Sep 2025 – 28 Sep 2026 · M ≥ 2.0 · 2,435 Catalogue entries

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

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