Earthquake 4 km NW of Rialto, CA (1.1 ml) (2025-08-03 04:50:59 UTC)
A 1.1 magnitude earthquake struck on 4 km NW of Rialto, CA, at 2025-08-03 04:50:59 UTC. Reviewed by USGS seismologists, this minor quake occurred at a magnitude type of ml and was felt in surrounding areas. Stay updated on earthquake activity in 4 km NW of Rialto, CA
Recommendation
Minor Earthquake
Minor Earthquake
Action
No need for significant action. These tremors are typically imperceptible or barely felt.
Suggestion
Remain calm and observe. These are often harmless and not a cause for concern.
Magnitudo (ml)
1.1
Automatic
USGS
Summary
- Intensity: 0
- Tsunami: 0
- ID: usgs_ci41251864
Nearest Places
- San Bernardino Sheriff's Aviation Division Emergency Medical Services Transport / 0.59 km
- San Bernardino County Sheriff's Department - Aviation Division / 0.6 km
- San Bernardino County Hazardous Materials Division Business Office / 0.68 km
- San Bernardino County Office of Emergency Services Hazardous Materials Division Building / 0.68 km
- Rialto Municipal Airport /Miro Field/ / 0.73 km
Comment
Latest Earthquake
1.2
4 km WNW of Borrego Springs, CA
Time:
Depth: 4.44 km
Source: USGS (Automatic)
Time:
Depth: 4.44 km
Source: USGS (Automatic)
1.7
8 km ENE of Coso Junction, CA
Time:
Depth: 2.00 km
Source: USGS (Automatic)
Time:
Depth: 2.00 km
Source: USGS (Automatic)
0.8
5 km NW of The Geysers, CA
Time:
Depth: 1.23 km
Source: USGS (Automatic)
Time:
Depth: 1.23 km
Source: USGS (Automatic)
3.9
KEPULAUAN TALAUD, INDONESIA
Time:
Depth: 13.00 km
Source: EMSC (Automatic)
Time:
Depth: 13.00 km
Source: EMSC (Automatic)
3.9
Talaud Islands, Indonesia
Time:
Depth: 13.36 km
Source: BMKG (Automatic)
Time:
Depth: 13.36 km
Source: BMKG (Automatic)
Nearest Earthquake
0.5
6 km NNW of Aguanga, CA
Time:
Depth: 10.82 km
Source: USGS (Automatic)
Time:
Depth: 10.82 km
Source: USGS (Automatic)
1.3
2 km E of Big Bear Lake, CA
Time:
Depth: 8.75 km
Source: USGS (Automatic)
Time:
Depth: 8.75 km
Source: USGS (Automatic)
1.0
4 km WSW of Anza, CA
Time:
Depth: 6.72 km
Source: USGS (Automatic)
Time:
Depth: 6.72 km
Source: USGS (Automatic)
1.0
3 km NE of Big Bear Lake, CA
Time:
Depth: 11.67 km
Source: USGS (Automatic)
Time:
Depth: 11.67 km
Source: USGS (Automatic)
3.1
3 km E of Big Bear Lake, CA
Time:
Depth: 7.83 km
Source: USGS (Automatic)
Time:
Depth: 7.83 km
Source: USGS (Automatic)