Back to map
United States

M1.2 Earthquake near 16 km W of Johannesburg, CA (United States)

UTC time: 2025-04-23 14:18:57 UTC Local time: —

Map

About this earthquake

A magnitude M1.2 earthquake was recorded near 16 km W of Johannesburg, CA (United States) on April 23, 2025 at 14:18 UTC. The hypocenter lay relatively close to the surface at around 9 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: 146 earthquakes were recorded in the past 24 hours, the strongest reaching M4.0.

Details

ID
20ecccd5fbe4005536e9804e9a3d92c375022c3b
Magnitude
M1.2
Depth
8.6 km
UTC time
2025-04-23 14:18:57 UTC
Local time
—
Country
United States
Source
usgs
Coordinates
35.34600, -117.80867
Temperature
28.8°C

Depth profile

Depth profile Depth: 8.6 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 8.6 km
Shallow
8.6 km
8.6 km — shallower than the regional average (15.3 km)
Regional average: 15.3 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

  • Ubehebe Craters
    Distance: 189 km ·Maar(s) ·Elevation: 752 m ·Last eruption: -150 ·United States
  • Mammoth Mountain
    Distance: 277 km ·Lava dome(s) ·Elevation: 3'369 m ·Last eruption: 1260 ·United States
  • Mono-Inyo Craters
    Distance: 294 km ·Lava dome(s) ·Elevation: 2'796 m ·Last eruption: 1380 ·United States
  • Salton Buttes
    Distance: 313 km ·Lava dome(s) ·Elevation: -40 m ·Last eruption: 210 ·United States
  • Mono Lake Volcanic Field
    Distance: 315 km ·Volcanic field ·Elevation: 2'121 m ·Last eruption: 1790 ·United States
  • Uinkaret Field
    Distance: 437 km ·Volcanic field ·Elevation: 1'555 m ·Last eruption: 1100 ·United States

United States

Context for this earthquake

06 Sep 2025 – 06 Sep 2026 · M ≥ 2.0 · 11,559 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