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M2.3 Depth: 7.1 km

M2.3 Earthquake near Challenge, California (United States)

UTC time: 2026-09-01 06:19:44 UTC Local time: —

About this earthquake

On September 1, 2026 at 06:19 UTC, a magnitude M2.3 earthquake occurred near Challenge, California (United States). With a focal depth of about 7 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Events of this size typically go unnoticed.

The event was recorded by USGS. United States: 147 earthquakes were recorded in the past 24 hours, the strongest reaching M3.3.

Details

Magnitude
M2.3
Depth
7.1 km
UTC time
2026-09-01 06:19:44 UTC
Local time
—
Country
United States
State
California
City
Challenge
County
Yuba County
Village
Challenge
Source
usgs
Coordinates
39.46433, -121.21767
Temperature
16.9°C

Map

Depth profile

Depth profile Depth: 7.1 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 7.1 km
Shallow
7.1 km
7.1 km — shallower 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

  • Lassen Volcanic Center
    Distance: 117 km ·Stratovolcano ·Elevation: 3'187 m ·Last eruption: 1917 ·United States
  • Clear Lake Volcanic Field
    Distance: 145 km ·Volcanic field ·Elevation: 1'439 m ·United States
  • Soda Lakes
    Distance: 201 km ·Maar(s) ·Elevation: 1'251 m ·United States
  • Shasta
    Distance: 231 km ·Stratovolcano ·Elevation: 4'317 m ·Last eruption: 1250 ·United States
  • Medicine Lake
    Distance: 240 km ·Shield ·Elevation: 2'412 m ·Last eruption: 1060 ·United States
  • Mono Lake Volcanic Field
    Distance: 250 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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