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United States · California

M1.4 Earthquake near Spring Valley, California (United States)

UTC time: 2026-10-28 21:59:24 UTC Local time: —

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About this earthquake

On October 28, 2026 at 21:59 UTC, a magnitude M1.4 earthquake occurred near Spring Valley, California (United States). With a focal depth of about 4 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 NCEDC. United States: over the past 24 hours, QuakeMap24 logged 188 earthquakes, the strongest at M3.9.

Details

ID
a7dafbd5ab324f4e406c2a461f1c641cf92a67db
Magnitude
M1.4
Depth
4.3 km
UTC time
2026-10-28 21:59:24 UTC
Local time
—
Country
United States
State
California
City
Spring Valley
County
Lake County
Village
Spring Valley
Source
ncedc
Coordinates
39.05383, -122.61900
Temperature
19.3°C

Depth profile

Depth profile Depth: 4.3 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 4.3 km
Shallow
4.3 km
4.3 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

  • Clear Lake Volcanic Field
    Distance: 16 km ·Volcanic field ·Elevation: 1'439 m ·United States
  • Lassen Volcanic Center
    Distance: 186 km ·Stratovolcano ·Elevation: 3'187 m ·Last eruption: 1917 ·United States
  • Shasta
    Distance: 264 km ·Stratovolcano ·Elevation: 4'317 m ·Last eruption: 1250 ·United States
  • Medicine Lake
    Distance: 298 km ·Shield ·Elevation: 2'412 m ·Last eruption: 1060 ·United States
  • Soda Lakes
    Distance: 326 km ·Maar(s) ·Elevation: 1'251 m ·United States
  • Mono Lake Volcanic Field
    Distance: 333 km ·Volcanic field ·Elevation: 2'121 m ·Last eruption: 1790 ·United States

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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