Back to map
M1.8 Depth: 28.1 km

M1.8 Earthquake near Humboldt County, California (United States)

UTC time: 2026-07-21 14:21:48 UTC Local time: —

About this earthquake

A magnitude M1.8 earthquake was recorded near Humboldt County, California (United States) on July 21, 2026 at 14:21 UTC. With a focal depth of about 28 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 data is provided by USGS and cross-checked across seismological networks. United States: over the past 24 hours, QuakeMap24 logged 179 earthquakes, the strongest at M3.1.

Map

Depth profile

Depth profile Depth: 28.1 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 28.1 km
Shallow
28.1 km
28.1 km — deeper than the regional average (15.6 km)
Regional average: 15.6 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: 119 km ·Stratovolcano ·Elevation: 4'317 m ·Last eruption: 1250 ·United States
  • Lassen Volcanic Center
    Distance: 174 km ·Stratovolcano ·Elevation: 3'187 m ·Last eruption: 1917 ·United States
  • Medicine Lake
    Distance: 177 km ·Shield ·Elevation: 2'412 m ·Last eruption: 1060 ·United States
  • Clear Lake Volcanic Field
    Distance: 228 km ·Volcanic field ·Elevation: 1'439 m ·United States
  • Crater Lake
    Distance: 249 km ·Caldera ·Elevation: 2'487 m ·Last eruption: -2850 ·United States
  • Cinnamon Butte
    Distance: 279 km ·Pyroclastic cone(s) ·Elevation: 1'958 m ·United States

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.

Share