Published on
August 28, 2025
On the evening of August 27, a 2.2 magnitude earthquake in California shook the ground near Johnsville in Plumas County. According to the U.S. Geological Survey (USGS), the quake struck at precisely 9:34 p.m., with its epicenter located around 2 miles west-southwest of Johnsville, just above sea level. While the tremor was minor, it caught the attention of those living in the region. If you felt it, the USGS encourages residents to report their experiences via their Felt Report form.
This incident serves as an important reminder about the significance of being aware of seismic activity, even when it’s a relatively low-magnitude event like this one.
Understanding Earthquake Magnitudes
To understand the impact of a 2.2 magnitude earthquake in California, it’s essential to grasp how earthquakes are measured. The magnitude of an earthquake refers to the amount of energy released at the source of the tremor. While many are familiar with the Richter scale, it has now been replaced by the moment magnitude scale, which provides more accurate measurements.
Generally speaking, earthquakes with a magnitude between 2.5 and 5.4 are noticeable to people, though they rarely cause significant damage. Those under 2.5 magnitude are seldom felt, but they still contribute to the seismic activity in areas like California, where earthquakes are frequent. A quake of 2.2 magnitude might be too weak to cause harm, but it’s still an important piece of ongoing natural events that shape the region’s geology.
What to Do When an Earthquake Hits
Earthquakes can be unsettling, but knowing how to respond can help reduce the risk of injury. Whether you’re at home, driving, or outside, experts advise using the drop, cover, and hold on method to stay safe. Here’s a breakdown of what to do in various situations:
- In a car: Safely pull over to the side of the road, stop, and set your parking brake. Avoid stopping under overpasses or near large structures.
- In bed: Lie face down and use a pillow to shield your head. This will help protect you from debris or falling objects.
- Outside: Move away from buildings, trees, and power lines. Stay in an open area until the shaking stops.
- Inside a building: Stay where you are and do not attempt to run outside. Take cover under a sturdy piece of furniture like a table or desk, and avoid standing in doorways.
For individuals using mobility aids like a wheelchair or walker, ensure that the wheels are locked and remain seated until the shaking ceases. Protect your head and neck with your arms, and if possible, crawl under a table for shelter. If no shelter is available, move to an interior wall away from windows and glass.
Aftershocks: What You Need to Know
Aftershocks are common following a major earthquake, and even smaller ones like the 2.2 magnitude earthquake in California near Johnsville can trigger them. These aftershocks are typically less intense than the initial quake but can still cause damage or injury. It’s important to remain vigilant after the primary tremor has passed and be prepared to act if you feel another shake.
If you experience an aftershock, follow the same drop, cover, and hold on method to protect yourself. Aftershocks can occur minutes, hours, or even days after the main quake, and it’s crucial to be ready to react each time.
Why Earthquake Preparedness Matters
Living in earthquake-prone areas means being prepared for seismic events of any magnitude. Whether it’s a 2.2 magnitude earthquake in California or a larger quake, being ready can help minimize the risk of injury. The Department of Homeland Security reports that each year, the world experiences over 500,000 detectable earthquakes, and while many are too small to feel, a significant portion of them can be felt by people.
When a quake strikes, structural damage may occur, including fallen debris, broken gas lines, or downed power lines. That’s why it’s crucial to understand earthquake safety tips and be prepared for the possibility of both the main shock and aftershocks. It’s always a good idea to check for any hazards like gas leaks or water line breaks once the shaking has stopped.
The USGS earthquake report serves as a key source of information during and after seismic events, helping residents stay informed about the situation and prepare for any aftershocks that may follow.
Earthquake Safety Tips to Keep in Mind
Here are some essential earthquake safety tips you should remember to stay safe during an earthquake:
- Stay calm: Panicking can lead to accidents. Breathe deeply and think through the actions you need to take.
- Take cover: If you’re indoors, move under a sturdy table or desk and protect your head and neck.
- Avoid using elevators: During a quake, using an elevator can be risky due to potential damage to the building’s infrastructure.
- Secure your home: Make sure heavy furniture or items are anchored to the wall, and keep breakable items in lower cabinets to avoid injury.
- Check your emergency kit: Have a basic emergency kit ready, including water, food, first aid supplies, and any necessary medications.
Having a clear emergency plan is vital for ensuring everyone in your household knows how to respond during a seismic event.
Conclusion: Stay Prepared and Be Informed
The 2.2 magnitude earthquake in California near Johnsville serves as a reminder that even minor earthquakes are part of the ongoing seismic activity in the region. Although this particular quake caused no significant damage, it’s a good idea for residents in earthquake-prone areas to stay informed and always be ready to take the necessary precautions.
Whether you’re preparing for a larger earthquake or simply want to understand how to respond to aftershocks safety, practicing the drop, cover, and hold on method and being aware of earthquake preparedness are essential for protecting yourself and your loved ones.
By staying informed through sources like the USGS earthquake report and keeping up with earthquake safety tips, you can ensure that you’re ready to handle whatever seismic events come your way.
