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M1.8 Depth: 8.6 km

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

UTC time: 2026-07-21 19:25:19 UTC Local time: —

About this earthquake

On July 21, 2026 at 19:25 UTC, a magnitude M1.8 earthquake occurred near Lassen County, California (United States). The hypocenter lay relatively close to the surface at around 9 km, increasing how strongly it was felt. 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 185 earthquakes, the strongest at M3.1.

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Depth profile

Depth profile Depth: 8.6 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 8.6 km
Shallow
8.6 km
8.6 km — shallower 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

  • Lassen Volcanic Center
    Distance: 117 km ·Stratovolcano ·Elevation: 3'187 m ·Last eruption: 1917 ·United States
  • Soda Lakes
    Distance: 133 km ·Maar(s) ·Elevation: 1'251 m ·United States
  • Medicine Lake
    Distance: 198 km ·Shield ·Elevation: 2'412 m ·Last eruption: 1060 ·United States
  • Shasta
    Distance: 218 km ·Stratovolcano ·Elevation: 4'317 m ·Last eruption: 1250 ·United States
  • Clear Lake Volcanic Field
    Distance: 256 km ·Volcanic field ·Elevation: 1'439 m ·United States
  • Mono Lake Volcanic Field
    Distance: 260 km ·Volcanic field ·Elevation: 2'121 m ·Last eruption: 1790 ·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.

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