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United States · California

M1.4 Earthquake near Humboldt County, California (United States)

UTC time: 2026-09-20 21:40:39 UTC Local time: —

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About this earthquake

On September 20, 2026 at 21:40 UTC, a magnitude M1.4 earthquake occurred near Humboldt County, California (United States). With a focal depth of about 20 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: over the past 24 hours, QuakeMap24 logged 178 earthquakes, the strongest at M5.3.

Details

ID
a2de5bb2b66b6b851a0de5cfc427ec91a159034f
Magnitude
M1.4
Depth
19.9 km
UTC time
2026-09-20 21:40:39 UTC
Local time
—
Country
United States
State
California
City
Humboldt County
County
Humboldt County
Source
usgs
Coordinates
40.01700, -123.74384
Temperature
30.1°C

Depth profile

Depth profile Depth: 19.9 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 19.9 km
Shallow
19.9 km
19.9 km — deeper 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: 143 km ·Volcanic field ·Elevation: 1'439 m ·United States
  • Lassen Volcanic Center
    Distance: 197 km ·Stratovolcano ·Elevation: 3'187 m ·Last eruption: 1917 ·United States
  • Shasta
    Distance: 203 km ·Stratovolcano ·Elevation: 4'317 m ·Last eruption: 1250 ·United States
  • Medicine Lake
    Distance: 256 km ·Shield ·Elevation: 2'412 m ·Last eruption: 1060 ·United States
  • Escanaba Segment
    Distance: 335 km ·Fissure vent(s) ·Elevation: -1'700 m ·Last eruption: -2260 ·United States
  • Crater Lake
    Distance: 353 km ·Caldera ·Elevation: 2'487 m ·Last eruption: -2850 ·United States

California

Context for this earthquake

20 Sep 2025 – 20 Sep 2026 · M ≥ 2.0 · 2,417 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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Country statistics · United States

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