Back to map
United States · California

M1.1 Earthquake near Calimesa, California (United States)

UTC time: 2026-09-28 05:49:39 UTC Local time: —

Map

About this earthquake

A magnitude M1.1 earthquake was recorded near Calimesa, California (United States) on September 28, 2026 at 05:49 UTC. With a focal depth of about 15 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Earthquakes of this small magnitude are usually barely noticeable and cause no damage.

The data is provided by USGS and cross-checked across seismological networks. United States: 169 earthquakes were recorded in the past 24 hours, the strongest reaching M4.4.

Details

ID
6059cf2e3ca517e180fcd3c553ad51f45bc402ad
Magnitude
M1.1
Depth
14.5 km
UTC time
2026-09-28 05:49:39 UTC
Local time
—
Country
United States
State
California
City
Calimesa
County
Riverside County
Source
usgs
Coordinates
33.99500, -117.00833
Temperature
19.8°C

Depth profile

Depth profile Depth: 14.5 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 14.5 km
Shallow
14.5 km
14.5 km — close to 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: 157 km ·Lava dome(s) ·Elevation: -40 m ·Last eruption: 210 ·United States
  • Ubehebe Craters
    Distance: 339 km ·Maar(s) ·Elevation: 752 m ·Last eruption: -150 ·United States
  • Pinacate
    Distance: 405 km ·Volcanic field ·Elevation: 1'183 m ·Mexico
  • Uinkaret Field
    Distance: 441 km ·Volcanic field ·Elevation: 1'555 m ·Last eruption: 1100 ·United States
  • Mammoth Mountain
    Distance: 444 km ·Lava dome(s) ·Elevation: 3'369 m ·Last eruption: 1260 ·United States
  • Mono-Inyo Craters
    Distance: 461 km ·Lava dome(s) ·Elevation: 2'796 m ·Last eruption: 1380 ·United States

Radius · 50 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • San Bernardino International AirportUnited States · SBD · KSBD
    23.9 kmStraight-line distance
  • Palm Springs International AirportUnited States · PSP · KPSP
    49.8 kmStraight-line distance

Source: OurAirports · Dataset date: 2026-09-28

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

28 Sep 2025 – 28 Sep 2026 · M ≥ 2.0 · 2,435 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.

Share