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United States · California

M1.4 Earthquake near Pomona, California (United States)

UTC time: 2026-09-15 23:37:39 UTC Local time: —

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About this earthquake

On September 15, 2026 at 23:37 UTC, a magnitude M1.4 earthquake occurred near Pomona, California (United States). The hypocenter lay relatively close to the surface at around 1 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: 171 earthquakes were recorded in the past 24 hours, the strongest reaching M4.8.

Details

ID
a4bdbb0e6d4b54a94492eb215aacbbe4ffa6c5d9
Magnitude
M1.4
Depth
0.5 km
UTC time
2026-09-15 23:37:39 UTC
Local time
—
Country
United States
State
California
City
Pomona
County
Los Angeles County
Source
usgs
Coordinates
34.02717, -117.74883
Temperature
29.3°C

Depth profile

Depth profile Depth: 0.5 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 0.5 km
Shallow
0.5 km
0.5 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: 218 km ·Lava dome(s) ·Elevation: -40 m ·Last eruption: 210 ·United States
  • Ubehebe Craters
    Distance: 334 km ·Maar(s) ·Elevation: 752 m ·Last eruption: -150 ·United States
  • Mammoth Mountain
    Distance: 417 km ·Lava dome(s) ·Elevation: 3'369 m ·Last eruption: 1260 ·United States
  • Mono-Inyo Craters
    Distance: 435 km ·Lava dome(s) ·Elevation: 2'796 m ·Last eruption: 1380 ·United States
  • Mono Lake Volcanic Field
    Distance: 457 km ·Volcanic field ·Elevation: 2'121 m ·Last eruption: 1790 ·United States
  • Pinacate
    Distance: 464 km ·Volcanic field ·Elevation: 1'183 m ·Mexico

Radius · 50 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • Ontario International AirportUnited States · ONT · KONT
    14.0 kmStraight-line distance
  • John Wayne Orange County International AirportUnited States · SNA · KSNA
    40.7 kmStraight-line distance
  • Long Beach International AirportUnited States · LGB · KLGB
    43.8 kmStraight-line distance

Source: OurAirports · Dataset date: 2026-09-15

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

15 Sep 2025 – 15 Sep 2026 · M ≥ 2.0 · 2,410 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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