2.0 Magnitude Earthquake Detected Near Calimesa, CA on Nov. 30

A preliminary 2.0 magnitude earthquake was detected near Calimesa, California, on November 30, 2025. The tremor occurred at 5:47 AM, with its epicenter located approximately 7 miles south-southwest of Calimesa, at a depth of 10 miles. Residents who felt the quake are encouraged to report their experience through the U.S. Geological Survey’s (USGS) Felt Report form.

Recent Seismic Activity in Riverside County

This recent earthquake is part of a series of tremors experienced in the region. Last week, six earthquakes measuring 2.5 magnitude or higher were registered. The most significant was a 3.8 magnitude quake near Idyllwild, which occurred two days prior to the Calimesa tremor.

Summary of Large Earthquakes

• 3.8 magnitude – Southwest of Idyllwild on Nov. 27
• 3.5 magnitude – Southwest of Idyllwild on Nov. 27
• 3.0 magnitude – Southwest of Idyllwild on Nov. 28
• 2.6 magnitude – South of Highland on Nov. 23
• 2.3 magnitude – Southwest of Idyllwild on Nov. 27

Understanding Earthquake Magnitude

The magnitude of an earthquake measures the energy released at its source, as reported by the USGS. This modern scale has replaced the older Richter scale. Generally, earthquakes ranging from 2.5 to 5.4 are felt widely but seldom cause significant damage.

Earthquakes measuring below 2.5 are not felt by the majority of people. However, the impact of an earthquake can be serious, potentially leading to fires, tsunamis, landslides, or avalanches. Most frequently, earthquakes occur in regions like Alaska, California, Hawaii, Oregon, Puerto Rico, and Washington.

Global Earthquake Statistics

Statistics indicate that there are around 500,000 detectable earthquakes globally each year. Of these, approximately 100,000 can be felt, while about 100 cause actual damage.

Safety Tips During an Earthquake

When an earthquake strikes, immediate action is crucial. Here are some expert-recommended safety tips:

• If you are in a car: Pull over and stop. Engage the parking brake.
• If you are in bed: Turn onto your stomach and protect your head with a pillow.
• If you are outdoors: Move away from buildings and do not re-enter.
• If you are indoors: Stay put; do not rush outside. Avoid doorways.

The key method for self-protection is to drop, cover, and hold on. Officials advise getting on hands and knees and holding onto a sturdy object. For those in wheelchairs or walkers, it is important to lock the wheels and remain seated until the shaking ceases.

Post-Earthquake Precautions

After the initial tremor, several hazards may arise, including building damage, leaks in gas and water lines, and downed power lines. Be prepared for potential aftershocks, and remember to drop, cover, and hold on once more if another tremor occurs.

For further information and to report your experience, visit the USGS website.