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United States

M1.8 Earthquake near 5 km WNW of Arcata, CA (United States)

UTC time: 2026-05-22 01:37:31 UTC Local time: —

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About this earthquake

On May 22, 2026 at 01:37 UTC, a magnitude M1.8 earthquake occurred near 5 km WNW of Arcata, CA (United States). With a focal depth of about 22 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 131 earthquakes, the strongest at M3.2.

Details

ID
a755856ba494882c95e8e9ddc9b4f346bb0d5b82
Magnitude
M1.8
Depth
21.6 km
UTC time
2026-05-22 01:37:31 UTC
Local time
—
Country
United States
City
California
Source
usgs
Coordinates
40.87750, -124.13600
Temperature
10.8°C

Depth profile

Depth profile Depth: 21.6 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 21.6 km
Shallow
21.6 km
21.6 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: 173 km ·Stratovolcano ·Elevation: 4'317 m ·Last eruption: 1250 ·United States
  • Lassen Volcanic Center
    Distance: 226 km ·Stratovolcano ·Elevation: 3'187 m ·Last eruption: 1917 ·United States
  • Medicine Lake
    Distance: 231 km ·Shield ·Elevation: 2'412 m ·Last eruption: 1060 ·United States
  • Clear Lake Volcanic Field
    Distance: 242 km ·Volcanic field ·Elevation: 1'439 m ·United States
  • Jackson Segment
    Distance: 281 km ·Fissure vent(s) ·Elevation: -3'100 m ·United States
  • Escanaba Segment
    Distance: 283 km ·Fissure vent(s) ·Elevation: -1'700 m ·Last eruption: -2260 ·United States

Radius · 50 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • California Redwood Coast-Humboldt County AirportUnited States · ACV · KACV
    11.4 kmStraight-line distance

Source: OurAirports · Dataset date: 2026-10-05

Nuclear power plants

  • Humboldt Bay nuclear power plantUnited StatesPermanently shut downReactor units at site: 1
    16.4 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

05 Oct 2025 – 05 Oct 2026 · M ≥ 2.0 · 2,447 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

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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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