A magnitude 7.0 earthquake struck off the coast of Northern California, specifically near Petrolia in Humboldt County, prompting a brief tsunami warning for coastal regions. The warning was lifted shortly before noon, with the National Tsunami Warning Center confirming that no tsunami threat currently exists. Initially affecting around 5.3 million people, the quake was felt significantly by more than 1.3 million residents, with reports of shaking extending to areas as far south as San Francisco.
The U.S. Geological Survey (USGS) classified the earthquake as a “primarily strike-slip” event, which typically poses a lower risk of generating tsunamis as the tectonic plates shift horizontally rather than vertically. The earthquake occurred at 10:44 a.m. local time and initially measured at a 6.6 magnitude before being revised.
In the aftermath, several aftershocks were recorded, including a notable 5.0 magnitude tremor near Ferndale. Although there were no immediate reports of major damage, local officials described some concerns, particularly in Rio Dell where roads sustained cracks and a middle school experienced a gas leak. Approximately 10,000 residents faced power outages in the region.
California Governor Gavin Newsom declared a state of emergency, and assessments for any potential damage are underway. In the wake of the earthquake, the San Francisco Zoo evacuated guests and moved animals to higher ground for safety. Additionally, the Bay Area’s BART transportation system experienced significant delays due to the quake.
As residents navigate the aftermath, the USGS has provided updates regarding potential aftershocks, highlighting a 5% chance of experiencing a tremor with a magnitude of 6 or greater within the next week, alongside a 34% likelihood for magnitude 5 quakes.
In light of the resilience shown by communities and emergency systems throughout this seismic event, it is evident that preparedness measures, including earthquake kits and early warning systems, are crucial. This incident also underscores the importance of community awareness and support in navigating such natural events safely.
Summary: A magnitude 7.0 earthquake near Petrolia, California, led to a brief tsunami warning that was later lifted. While the quake was felt widely, there were no significant damages reported, and authorities are assessing the situation following the state’s emergency declaration. Emergency preparedness measures were highlighted, emphasizing the importance of being ready for such natural events.