A 2.8 magnitude earthquake shook near San Ramon, California, on March 23, according to the U.S. Geological Survey. The tremor occurred at 3:34 a.m. and was centered approximately 2 miles east-southeast of San Ramon, at a depth of 6 miles. Residents who felt the quake are encouraged to submit reports through the USGS Felt Report form. Earthquakes are measured by their magnitude, which reflects the energy released at the earthquake’s source. The USGS explains that this system replaces the older Richter scale. Quakes ranging from 2.5 to 5.4 magnitude are typically felt but rarely cause significant damage. Earthquakes below 2.5 magnitude are generally not noticeable to most people. While earthquakes can occur anywhere, they are most common in regions such as Alaska, California, Hawaii, Oregon, Puerto Rico, and Washington. The Department of Homeland Security notes that these events can trigger secondary hazards like fires, tsunamis, landslides, or avalanches. Globally, it is estimated that 500,000 earthquakes are detectable each year, with 100,000 of those felt by humans and 100 causing damage. During an earthquake, experts recommend immediate protective actions. If in a vehicle, drivers should pull over, stop, and set the parking brake. Those in bed should turn face-down and cover their heads with a pillow. Outdoor individuals should avoid buildings and not enter structures. Inside, people should stay put, avoid doorways, and follow the "drop, cover, and hold on" protocol. For those using wheelchairs or walkers, wheels should be locked, and users should remain seated until shaking stops. Covering the head and neck with arms is advised, and if possible, crawling under a sturdy table. If no shelter is available, moving to an interior wall away from windows is recommended.#california #department_of_homeland_security #us_geological_survey #san_ramon #earthquake_bot