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United States · California

M3.7 Earthquake near Humboldt County, California (United States)

UTC time: 2026-09-07 21:44:24 UTC Local time: —

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About this earthquake

On September 7, 2026 at 21:44 UTC, a magnitude M3.7 earthquake occurred near Humboldt County, California (United States). The hypocenter lay relatively close to the surface at around 24 km, increasing how strongly it was felt. Shaking of this size is frequently noticed but usually harmless.

The data is provided by USGS and cross-checked across seismological networks. United States: over the past 24 hours, QuakeMap24 logged 167 earthquakes, the strongest at M3.7.

Details

ID
010e714e18177c9b44c21a03651dddbddeb16657
Magnitude
M3.7
Depth
23.6 km
UTC time
2026-09-07 21:44:24 UTC
Local time
—
Country
United States
State
California
City
Humboldt County
County
Humboldt County
Source
usgs
Coordinates
40.56400, -123.68000
Temperature
18.7°C

Depth profile

Depth profile Depth: 23.6 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 23.6 km
Shallow
23.6 km
23.6 km — deeper than the regional average (15.3 km)
Regional average: 15.3 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

  • Shasta
    Distance: 156 km ·Stratovolcano ·Elevation: 4'317 m ·Last eruption: 1250 ·United States
  • Lassen Volcanic Center
    Distance: 184 km ·Stratovolcano ·Elevation: 3'187 m ·Last eruption: 1917 ·United States
  • Clear Lake Volcanic Field
    Distance: 194 km ·Volcanic field ·Elevation: 1'439 m ·United States
  • Medicine Lake
    Distance: 213 km ·Shield ·Elevation: 2'412 m ·Last eruption: 1060 ·United States
  • Crater Lake
    Distance: 295 km ·Caldera ·Elevation: 2'487 m ·Last eruption: -2850 ·United States
  • Cinnamon Butte
    Distance: 325 km ·Pyroclastic cone(s) ·Elevation: 1'958 m ·United States

Radius · 50 km

Nearby infrastructure

Up to 3 nearest sites per category

Nuclear power plants

  • Humboldt Bay nuclear power plantUnited StatesPermanently shut downReactor units at site: 1
    48.8 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

07 Sep 2025 – 07 Sep 2026 · M ≥ 3.0 · 246 Catalogue entries

Of 245 other entries for this area and period, 71 have a higher stored magnitude. Different magnitude types and reports not yet merged limit the comparison.

Open seismic profile

Historic earthquake map · United States

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Explore recent and long-term earthquake activity in this country. Use filters to narrow down by magnitude, depth, and date range.

Country statistics · United States

Country overview
View earthquake KPIs, strongest and latest events, and averages for this country.

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