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United States · California

M2.3 Earthquake near Almanor, California (United States)

UTC time: 2026-10-04 07:23:50 UTC Local time: —

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About this earthquake

A magnitude M2.3 earthquake was recorded near Almanor, California (United States) on October 4, 2026 at 07:23 UTC. The hypocenter lay relatively close to the surface at around 6 km, increasing how strongly it was felt. Events of this size typically go unnoticed.

The event was recorded by USGS. United States: 160 earthquakes were recorded in the past 24 hours, the strongest reaching M3.9.

Details

ID
21eb081e0d0b24010e01114d953128c9aafaa550
Magnitude
M2.3
Depth
5.5 km
UTC time
2026-10-04 07:23:50 UTC
Local time
—
Country
United States
State
California
City
Almanor
County
Plumas County
Source
usgs
Coordinates
40.22783, -121.17117
Temperature
19.9°C

Depth profile

Depth profile Depth: 5.5 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 5.5 km
Shallow
5.5 km
5.5 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

  • Lassen Volcanic Center
    Distance: 41 km ·Stratovolcano ·Elevation: 3'187 m ·Last eruption: 1917 ·United States
  • Shasta
    Distance: 157 km ·Stratovolcano ·Elevation: 4'317 m ·Last eruption: 1250 ·United States
  • Medicine Lake
    Distance: 157 km ·Shield ·Elevation: 2'412 m ·Last eruption: 1060 ·United States
  • Clear Lake Volcanic Field
    Distance: 196 km ·Volcanic field ·Elevation: 1'439 m ·United States
  • Soda Lakes
    Distance: 211 km ·Maar(s) ·Elevation: 1'251 m ·United States
  • Mono Lake Volcanic Field
    Distance: 309 km ·Volcanic field ·Elevation: 2'121 m ·Last eruption: 1790 ·United States

California

Context for this earthquake

04 Oct 2025 – 04 Oct 2026 · M ≥ 2.0 · 2,447 Catalogue entries

Of 2,446 other entries for this area and period, 1,144 have a higher stored magnitude. Different magnitude types and reports not yet merged limit the comparison.

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Historic earthquake map · United States

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