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United States · California

M1.0 Earthquake near Winchester, California (United States)

UTC time: 2026-09-18 11:19:05 UTC Local time: —

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About this earthquake

A magnitude M1.0 earthquake was recorded near Winchester, California (United States) on September 18, 2026 at 11:19 UTC. The hypocenter lay relatively close to the surface at around 12 km, increasing how strongly it was felt. Earthquakes of this small magnitude are usually barely noticeable and cause no damage.

The event was recorded by USGS. United States: over the past 24 hours, QuakeMap24 logged 155 earthquakes, the strongest at M6.5.

Details

ID
b62ba48439e487e8571586fd8b5a30accf55be58
Magnitude
M1.0
Depth
11.7 km
UTC time
2026-09-18 11:19:05 UTC
Local time
—
Country
United States
State
California
City
Winchester
County
Riverside County
Source
usgs
Coordinates
33.70950, -117.06617
Temperature
14.5°C

Depth profile

Depth profile Depth: 11.7 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 11.7 km
Shallow
11.7 km
11.7 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

  • Salton Buttes
    Distance: 146 km ·Lava dome(s) ·Elevation: -40 m ·Last eruption: 210 ·United States
  • Ubehebe Craters
    Distance: 370 km ·Maar(s) ·Elevation: 752 m ·Last eruption: -150 ·United States
  • Pinacate
    Distance: 392 km ·Volcanic field ·Elevation: 1'183 m ·Mexico
  • Uinkaret Field
    Distance: 465 km ·Volcanic field ·Elevation: 1'555 m ·Last eruption: 1100 ·United States
  • Mammoth Mountain
    Distance: 471 km ·Lava dome(s) ·Elevation: 3'369 m ·Last eruption: 1260 ·United States
  • San Luis, Isla
    Distance: 485 km ·Tuff cone ·Elevation: 183 m ·Last eruption: -1141 ·Mexico

Radius · 50 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • San Bernardino International AirportUnited States · SBD · KSBD
    45.8 kmStraight-line distance

Source: OurAirports · Dataset date: 2026-09-18

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

18 Sep 2025 – 18 Sep 2026 · M ≥ 2.0 · 2,412 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

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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