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United States · California

M3.9 Earthquake near Inyo County, California (United States)

UTC time: 2026-08-21 17:26:08 UTC Local time: —

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About this earthquake

On August 21, 2026 at 17:26 UTC, a magnitude M3.9 earthquake occurred near Inyo County, California (United States). With a focal depth of about 8 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Shaking of this size is frequently noticed but usually harmless.

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 M3.9.

Details

ID
b29074aabc50ece1259881dea72a8f8c370752fa
Magnitude
M3.9
Depth
8.0 km
UTC time
2026-08-21 17:26:08 UTC
Local time
—
Country
United States
State
California
City
Inyo County
County
Inyo County
Source
usgs
Coordinates
36.59240, -117.85330
Temperature
33.0°C

Depth profile

Depth profile Depth: 8 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 8 km
Shallow
8 km
8 km — shallower than the regional average (15.2 km)
Regional average: 15.2 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

  • Ubehebe Craters
    Distance: 60 km ·Maar(s) ·Elevation: 752 m ·Last eruption: -150 ·United States
  • Mammoth Mountain
    Distance: 156 km ·Lava dome(s) ·Elevation: 3'369 m ·Last eruption: 1260 ·United States
  • Mono-Inyo Craters
    Distance: 170 km ·Lava dome(s) ·Elevation: 2'796 m ·Last eruption: 1380 ·United States
  • Mono Lake Volcanic Field
    Distance: 188 km ·Volcanic field ·Elevation: 2'121 m ·Last eruption: 1790 ·United States
  • Soda Lakes
    Distance: 338 km ·Maar(s) ·Elevation: 1'251 m ·United States
  • Uinkaret Field
    Distance: 423 km ·Volcanic field ·Elevation: 1'555 m ·Last eruption: 1100 ·United States

California

Context for this earthquake

14 Sep 2025 – 14 Sep 2026 · M ≥ 3.0 · 241 Catalogue entries

Of 240 other entries for this area and period, 46 have a higher stored magnitude. Different magnitude types and reports not yet merged limit the comparison.

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Historic earthquake map · United States

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