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United States · California

M3.0 Earthquake near Johnston Corner, California (United States)

UTC time: 2026-07-17 07:52:08 UTC Local time: —

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About this earthquake

A magnitude M3.0 earthquake was recorded near Johnston Corner, California (United States) on July 17, 2026 at 07:52 UTC. With a focal depth of about 12 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Events of this size typically go unnoticed.

The data is provided by USGS and cross-checked across seismological networks. United States: over the past 24 hours, QuakeMap24 logged 189 earthquakes, the strongest at M3.5.

Details

ID
e4c4ca58c6be4241c81f0fa8ef0c8fd5e6778019
Magnitude
M3.0
Depth
11.6 km
UTC time
2026-07-17 07:52:08 UTC
Local time
—
Country
United States
State
California
City
Johnston Corner
County
Santa Cruz County
Source
usgs
Coordinates
36.93184, -121.68767
Temperature
14.8°C

Depth profile

Depth profile Depth: 11.6 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 11.6 km
Shallow
11.6 km
11.6 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

Felt reports

2felt reports at EMSC / LastQuake

Voluntary reports of feeling this earthquake. The count is not an intensity measurement and is not added to USGS DYFI reports.

Data updated: Jul 17, 2026, 8:49 PM UTC · Last checked: Sep 6, 2026, 12:18 PM UTC

Source: EMSC / LastQuake

Volcanoes nearby

  • Clear Lake Volcanic Field
    Distance: 246 km ·Volcanic field ·Elevation: 1'439 m ·United States
  • Mammoth Mountain
    Distance: 247 km ·Lava dome(s) ·Elevation: 3'369 m ·Last eruption: 1260 ·United States
  • Mono-Inyo Craters
    Distance: 254 km ·Lava dome(s) ·Elevation: 2'796 m ·Last eruption: 1380 ·United States
  • Mono Lake Volcanic Field
    Distance: 263 km ·Volcanic field ·Elevation: 2'121 m ·Last eruption: 1790 ·United States
  • Ubehebe Craters
    Distance: 377 km ·Maar(s) ·Elevation: 752 m ·Last eruption: -150 ·United States
  • Soda Lakes
    Distance: 379 km ·Maar(s) ·Elevation: 1'251 m ·United States

Radius · 50 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • Monterey Regional AirportUnited States · MRY · KMRY
    40.8 kmStraight-line distance

Source: OurAirports · Dataset date: 2026-09-23

This selection shows geographic proximity, not a hazard zone or confirmed impacts. Distances use recorded site coordinates. Sources & data dates

California

Context for this earthquake

23 Sep 2025 – 23 Sep 2026 · M ≥ 2.0 · 2,418 Catalogue entries

Of 2,417 other entries for this area and period, 254 have a higher stored magnitude. Different magnitude types and reports not yet merged limit the comparison.

Open seismic profile

Historic earthquake map · United States

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