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United States · California

M1.7 Earthquake near Humboldt County, California (United States)

UTC time: 2026-09-25 17:03:53 UTC Local time: —

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About this earthquake

On September 25, 2026 at 17:03 UTC, a magnitude M1.7 earthquake occurred near Humboldt County, California (United States). The hypocenter lay relatively close to the surface at around 21 km, increasing how strongly it was felt. 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 154 earthquakes, the strongest at M3.2.

Details

ID
e6477128403cd900714ab3597eea33b2b0908137
Magnitude
M1.7
Depth
21.4 km
UTC time
2026-09-25 17:03:53 UTC
Local time
—
Country
United States
State
California
City
Humboldt County
County
Humboldt County
Source
usgs
Coordinates
40.42800, -124.02834
Temperature
16.4°C

Depth profile

Depth profile Depth: 21.4 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 21.4 km
Shallow
21.4 km
21.4 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

  • Shasta
    Distance: 189 km ·Stratovolcano ·Elevation: 4'317 m ·Last eruption: 1250 ·United States
  • Clear Lake Volcanic Field
    Distance: 195 km ·Volcanic field ·Elevation: 1'439 m ·United States
  • Lassen Volcanic Center
    Distance: 213 km ·Stratovolcano ·Elevation: 3'187 m ·Last eruption: 1917 ·United States
  • Medicine Lake
    Distance: 246 km ·Shield ·Elevation: 2'412 m ·Last eruption: 1060 ·United States
  • Escanaba Segment
    Distance: 299 km ·Fissure vent(s) ·Elevation: -1'700 m ·Last eruption: -2260 ·United States
  • Jackson Segment
    Distance: 317 km ·Fissure vent(s) ·Elevation: -3'100 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
    38.0 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

25 Sep 2025 – 25 Sep 2026 · M ≥ 2.0 · 2,421 Catalogue entries

Sufficiently reliable matching data are not currently available for a direct comparison. The area profile shows the available records and their limitations.

Open seismic profile

Historic earthquake map · United States

Open history map
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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