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United States · California

M1.3 Earthquake near Calpella, California (United States)

UTC time: 2026-09-21 19:14:00 UTC Local time: —

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About this earthquake

A magnitude M1.3 earthquake was recorded near Calpella, California (United States) on September 21, 2026 at 19:14 UTC. With a focal depth of about 7 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Events of this size typically go unnoticed.

The data is provided by USGS and cross-checked across seismological networks. United States: over the past 24 hours, QuakeMap24 logged 192 earthquakes, the strongest at M3.0.

Details

ID
a122841b79d76ace270170d6333d76252727802b
Magnitude
M1.3
Depth
6.8 km
UTC time
2026-09-21 19:14:00 UTC
Local time
—
Country
United States
State
California
City
Calpella
County
Mendocino County
Village
Calpella
Source
usgs
Coordinates
39.24717, -123.20600
Temperature
23.3°C

Depth profile

Depth profile Depth: 6.8 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 6.8 km
Shallow
6.8 km
6.8 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: 49 km ·Volcanic field ·Elevation: 1'439 m ·United States
  • Lassen Volcanic Center
    Distance: 200 km ·Stratovolcano ·Elevation: 3'187 m ·Last eruption: 1917 ·United States
  • Shasta
    Distance: 255 km ·Stratovolcano ·Elevation: 4'317 m ·Last eruption: 1250 ·United States
  • Medicine Lake
    Distance: 298 km ·Shield ·Elevation: 2'412 m ·Last eruption: 1060 ·United States
  • Soda Lakes
    Distance: 373 km ·Maar(s) ·Elevation: 1'251 m ·United States
  • Mono Lake Volcanic Field
    Distance: 388 km ·Volcanic field ·Elevation: 2'121 m ·Last eruption: 1790 ·United States

California

Context for this earthquake

21 Sep 2025 – 21 Sep 2026 · M ≥ 2.0 · 2,416 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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Historic earthquake map · United States

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