Earthquake report · M 4.0

M4.0 earthquake 45 km from Ukiah, United States

USGS · updated Nov 3, 2026, 12:11 UTC

A magnitude 4.0 earthquake was recorded on Oct 28, 2026, 8:01 AM (EDT) 10 km N of Lake Pillsbury, CA at a depth of 12 km, according to the U.S. Geological Survey (USGS). Data is preliminary and the magnitude may be revised.

Reported location · 39.50°, -122.95° ·

Read the official report ↗Map, updates and comments

Details

Source: usgs
Category: earthquake
Source status: active
Magnitude: 4.0
Depth (km): 12
Local time: Oct 28, 2026, 8:01 AM (EDT)
UTC time: 2026-10-28 12:01
Coordinates: 39.501, -122.952

Updates

M 4.0 - 10 km N of Lake Pillsbury, CANov 3, 2026, 12:11 UTC
M 4.0 - 10 km N of Lake Pillsbury, CANov 2, 2026, 12:11 UTC
M 4.0 - 10 km N of Lake Pillsbury, CANov 1, 2026, 12:11 UTC
M 4.0 - 10 km N of Lake Pillsbury, CAOct 31, 2026, 19:57 UTC
M 4.0 - 10 km N of Lake Pillsbury, CAOct 31, 2026, 12:11 UTC

Nearby cities

Ukiah · 45 km
Clearlake · 67 km
Chico · 99 km
Windsor · 107 km
Paradise · 117 km

All recent earthquakes in United States →

Saved source report · captured Nov 3, 2026, 19:21 UTC. Follow the issuing authority’s current instructions.