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United States · California

M3.8 Earthquake near Inyo County, California (United States)

UTC time: 2026-08-23 07:59:55 UTC Local time: —

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About this earthquake

A magnitude M3.8 earthquake was recorded near Inyo County, California (United States) on August 23, 2026 at 07:59 UTC. The hypocenter lay relatively close to the surface at around 2 km, increasing how strongly it was felt. Shaking of this size is frequently noticed but usually harmless.

The event was recorded by USGS. United States: 181 earthquakes were recorded in the past 24 hours, the strongest reaching M3.7.

Details

ID
54fa57be3c1c86abcba5565a5252679f7099dc82
Magnitude
M3.8
Depth
2.2 km
UTC time
2026-08-23 07:59:55 UTC
Local time
—
Country
United States
State
California
City
Inyo County
County
Inyo County
Source
usgs
Coordinates
36.06967, -117.84133
Temperature
23.6°C

Depth profile

Depth profile Depth: 2.2 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 2.2 km
Shallow
2.2 km
2.2 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

Official USGS aftershock forecast

Probability of at least one aftershock at or above the specified magnitude during the entire stated time window. This does not predict an individual earthquake.

Issued: Oct 25, 2026, 7:59 AM UTC · Last checked: Oct 30, 2026, 8:07 AM UTC

Oct 25, 2026, 8:00 AM UTC – Oct 26, 2026, 8:00 AM UTC · Expired
MagnitudeProbability ≥ 1Count (95% interval)
M ≥ 3.00.41 %0–0
M ≥ 4.00.04 %0–0
M ≥ 5.0< 0.01 %0–0
M ≥ 6.0< 0.01 %0–0
M ≥ 7.0< 0.01 %0–0
Oct 25, 2026, 8:00 AM UTC – Nov 1, 2026, 8:00 AM UTC
MagnitudeProbability ≥ 1Count (95% interval)
M ≥ 3.02.68 %0–1
M ≥ 4.00.27 %0–0
M ≥ 5.00.03 %0–0
M ≥ 6.0< 0.01 %0–0
M ≥ 7.0< 0.01 %0–0
Oct 25, 2026, 8:00 AM UTC – Nov 24, 2026, 8:00 AM UTC
MagnitudeProbability ≥ 1Count (95% interval)
M ≥ 3.09.55 %0–1
M ≥ 4.01.01 %0–0
M ≥ 5.00.10 %0–0
M ≥ 6.00.01 %0–0
M ≥ 7.0< 0.01 %0–0
Oct 25, 2026, 8:00 AM UTC – Oct 25, 2027, 8:00 AM UTC
MagnitudeProbability ≥ 1Count (95% interval)
M ≥ 3.038.81 %0–2
M ≥ 4.05.07 %0–1
M ≥ 5.00.52 %0–0
M ≥ 6.00.05 %0–0
M ≥ 7.0< 0.01 %0–0

The range is the 95% forecast interval for the number of earthquakes. Magnitude thresholds and time windows overlap: do not add the values. Windows already in progress still refer to the entire stated period.

Source: USGS — Operational Aftershock Forecast

Volcanoes nearby

  • Ubehebe Craters
    Distance: 111 km ·Maar(s) ·Elevation: 752 m ·Last eruption: -150 ·United States
  • Mammoth Mountain
    Distance: 203 km ·Lava dome(s) ·Elevation: 3'369 m ·Last eruption: 1260 ·United States
  • Mono-Inyo Craters
    Distance: 220 km ·Lava dome(s) ·Elevation: 2'796 m ·Last eruption: 1380 ·United States
  • Mono Lake Volcanic Field
    Distance: 239 km ·Volcanic field ·Elevation: 2'121 m ·Last eruption: 1790 ·United States
  • Salton Buttes
    Distance: 379 km ·Lava dome(s) ·Elevation: -40 m ·Last eruption: 210 ·United States
  • Soda Lakes
    Distance: 395 km ·Maar(s) ·Elevation: 1'251 m ·United States

California

Context for this earthquake

05 Oct 2025 – 05 Oct 2026 · M ≥ 3.0 · 239 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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