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United States · California

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

UTC time: 2026-08-28 00:40:48 UTC Local time: —

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About this earthquake

A magnitude M1.1 earthquake was recorded near Redlands, California (United States) on August 28, 2026 at 00:40 UTC. The hypocenter lay relatively close to the surface at around 13 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: 176 earthquakes were recorded in the past 24 hours, the strongest reaching M4.6.

Details

ID
99910a00c119ae7c08a244ba63acc43347f2a2b2
Magnitude
M1.1
Depth
12.5 km
UTC time
2026-08-28 00:40:48 UTC
Local time
—
Country
United States
State
California
City
Redlands
County
San Bernardino County
Source
usgs
Coordinates
34.03550, -117.18816
Temperature
31.5°C

Depth profile

Depth profile Depth: 12.5 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 12.5 km
Shallow
12.5 km
12.5 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: 173 km ·Lava dome(s) ·Elevation: -40 m ·Last eruption: 210 ·United States
  • Ubehebe Craters
    Distance: 333 km ·Maar(s) ·Elevation: 752 m ·Last eruption: -150 ·United States
  • Pinacate
    Distance: 421 km ·Volcanic field ·Elevation: 1'183 m ·Mexico
  • Mammoth Mountain
    Distance: 433 km ·Lava dome(s) ·Elevation: 3'369 m ·Last eruption: 1260 ·United States
  • Mono-Inyo Craters
    Distance: 451 km ·Lava dome(s) ·Elevation: 2'796 m ·Last eruption: 1380 ·United States
  • Uinkaret Field
    Distance: 451 km ·Volcanic field ·Elevation: 1'555 m ·Last eruption: 1100 ·United States

Radius · 50 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • San Bernardino International AirportUnited States · SBD · KSBD
    8.1 kmStraight-line distance
  • Ontario International AirportUnited States · ONT · KONT
    38.1 kmStraight-line distance

Source: OurAirports · Dataset date: 2026-11-10

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

05 Oct 2025 – 05 Oct 2026 · M ≥ 2.0 · 2,447 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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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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