A 4.7 magnitude earthquake struck near Susanville, California, on December 28, 2025, at 4:41 p.m. The tremor occurred at a depth of 4 miles, with its epicenter located approximately 9 miles north-northwest of Susanville. Initially reported as a 4.8 magnitude event, it was later adjusted to 4.7.
Reactions from Nearby Cities
The earthquake was felt in several areas, including:
- Roseville
- Reno
- Tahoe City
According to the U.S. Geological Survey (USGS) and their Did You Feel It (DYFI) report, 359 responses were collected from individuals who felt the tremor.
Potential Impact and Safety Measures
The USGS issued a green alert for shaking-related fatalities and economic losses, indicating a low likelihood of significant damage or casualties. However, regions with vulnerable structures, such as unreinforced brick masonry, could be at risk. Recent seismic activity in the area has led to secondary hazards like landslides.
Preparedness During an Earthquake
In the event of an earthquake, experts recommend the following safety measures:
- If you’re in a car: Pull over, stop, and set the parking brake.
- If you’re in bed: Turn face down and cover your head with a pillow.
- If you’re outdoors: Stay clear of buildings and do not enter them.
- If you’re indoors: Stay put, avoid doorways, and find cover under a sturdy table.
Officials emphasize the importance of the “Drop, Cover, and Hold On” technique during an earthquake to enhance personal safety.
Understanding Earthquakes
Magnitude measures the energy released during an earthquake, superseding the old Richter scale. Earthquakes between 2.5 and 5.4 are common; they usually cause little damage. Globally, around 500,000 detectable earthquakes occur annually, with about 100 causing noticeable damage.
Previous Seismic Activity
Just a week before this event, a smaller 2.4 magnitude quake was reported near Lake Davis, highlighting the region’s seismic activity.
