In Southern California, a pair of modest earthquakes sent tremors through the region on Saturday morning. The epicenters of the earthquakes, measuring magnitudes 3.5 and 3.9, were reported in Ontario. Interestingly, both earthquakes occurred within the span of approximately thirty minutes.

Reports from crowdsourcing data sent to the U.S. Geological Survey indicate that the shaking was felt as far away as Los Angeles, Orange County, and even northern San Diego County. According to the Modified Mercalli Intensity scale, the shaking closer to the epicenter was categorized as "light." This level of shaking is strong enough to disturb windows and dishes, and can noticeably rock standing cars.

However, even areas further away from the epicenter experienced some degree of shaking. The scale of shaking was classified as "weak" and might have been felt as far as Los Angeles, the San Gabriel Valley, Long Beach, Orange County, Riverside, and San Bernardino.

The initial earthquake struck near Archibald Avenue and Brookside Street at 10:05 a.m. on Saturday, with the larger earthquake following shortly after, approximately three-fifths of a mile away, with its epicenter located at the 60 Freeway and South Oak Hill Drive.

Residents in Rowland Heights also reported feeling the impact of the earthquakes. In one instance, a resident stated that the shaking was so intense that he initially thought someone had crashed into his house. His desk shook forcefully for a few seconds, causing alarm and confusion.

Fortunately, as of now, there have been no reports of significant damage or injuries resulting from these earthquakes. However, it serves as a reminder for residents of the importance of preparedness and being vigilant in earthquake-prone areas.

Local authorities and the U.S. Geological Survey will continue to monitor the situation and provide updates as necessary.