Earthquake 4 km N of Rancho Cucamonga, CA (1.6 ml) (2025-04-20 18:56:40 UTC)

1745175400

34.1563, -117.5815

10.70 KM

A 1.6 magnitude earthquake struck on 4 km N of Rancho Cucamonga, CA, at 2025-04-20 18:56:40 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 N of Rancho Cucamonga, CA

Recommendation
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.

Earthquake 4 km N of Rancho Cucamonga, CA (1.6 ml) (2025-04-20 18:56:40 UTC)

Magnitudo (ml)

1.6

Automatic
USGS

Summary

Intensity: 0
Tsunami: 0
ID: usgs_ci40934575

Nearest Places

Hermosa Elementary School / 0.72 km
Wargin Hall / 1.22 km
Chaffey College / 1.26 km
Alta Loma Basin Number 2 87-007 Dam / 1.45 km
Earl Sicosky Gymnasium / 1.53 km

Comment

Latest Earthquake

0.8

9 km WNW of Cobb, CA
Time: 1745182970
Depth: 1.73 km
Source: USGS (Automatic)

0.5

2 km NNE of The Geysers, CA
Time: 1745182194
Depth: 2.31 km
Source: USGS (Automatic)

0.4

7 km NNE of Julian, CA
Time: 1745182169
Depth: 6.68 km
Source: USGS (Automatic)

1.5

EASTERN TURKEY
Time: 1745182117
Depth: 7.00 km
Source: EMSC (Automatic)

3.2

NORTH ISLAND OF NEW ZEALAND
Time: 1745181554
Depth: 16.50 km
Source: EMSC (Automatic)

Nearest Earthquake

1.3

3 km N of Big Bear City, CA
Time: 1745176762
Depth: 8.78 km
Source: USGS (Automatic)

1.4

4 km ENE of Montebello, CA
Time: 1745174665
Depth: 0.49 km
Source: USGS (Automatic)

1.1

2 km SSE of San Dimas, CA
Time: 1745170346
Depth: 12.30 km
Source: USGS (Automatic)

0.9

12 km WSW of Corona, CA
Time: 1745158700
Depth: 4.31 km
Source: USGS (Automatic)

0.5

5 km S of Idyllwild, CA
Time: 1745158558
Depth: 17.40 km
Source: USGS (Automatic)