A powerful 7.0-magnitude earthquake struck off the coast of Northern California near Humboldt County, triggering a tsunami warning that was later canceled. The quake, one of the largest in recent years, caused widespread tremors, rattling communities and highlighting the region’s seismic vulnerability.
Earthquake Details and Epicenter
The U.S. Geological Survey (USGS) reported the earthquake occurred at 10:44 a.m. on Thursday, with the epicenter west of Petrolia, California, near the Pacific, North American, and Juan de Fuca tectonic plates’ triple junction. Initially recorded at a magnitude of 6.6, it was later upgraded to 7.0.
A significant aftershock, originally listed as 5.8 magnitude and later downgraded to 4.1, struck near Cobb, California, in Lake County. Additional aftershocks ranging from 2.5 to 4.2 magnitude were recorded in the surrounding areas, keeping residents on edge.
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Tsunami Warning and Evacuation
Shortly after the quake, a tsunami warning was issued for areas 45 miles southwest of Eureka, prompting evacuations along the North Coast. Authorities, including the Humboldt County Sheriff’s Office, advised coastal residents to move to higher ground immediately.
The warning briefly extended to San Mateo County, where officials urged residents to avoid beaches and coastal areas. The warning was canceled by noon, allowing residents to return to their homes.
Impact on Communities
The earthquake’s tremors were felt across Northern California, including the Central Valley and the Bay Area. In Rio Dell, California, the shaking caused damage to local businesses, scattering goods and breaking bottles.
Bay Area Rapid Transit (BART) temporarily suspended service through the Transbay Tube as a precaution, but operations resumed shortly afterward. The incident served as a stark reminder of the importance of emergency preparedness in earthquake-prone regions.
Emergency Response
California Governor Gavin Newsom promptly activated the state’s emergency response system. The California Office of Emergency Services (Cal OES) mobilized resources to assess damage and assist local authorities.
Governor Newsom issued an emergency proclamation to unlock additional state funds and resources for first responders. “I am grateful for the robust system in place that kept people safe and informed during this event,” Newsom stated.
Preparedness and Safety Measures
Earthquakes like this highlight the need for readiness in seismic zones. Authorities urged residents to familiarize themselves with safety protocols, including creating emergency kits, securing heavy objects, and knowing evacuation routes.
Seismic History of Northern California
Northern California sits along a highly active tectonic region, making it vulnerable to major earthquakes. Thus, the area’s history includes several notable quakes, with this latest event adding to the ongoing need for vigilance.
Residents are encouraged to stay informed through official channels and remain prepared for potential aftershocks. The recent event underscores the critical importance of earthquake safety and rapid response systems in protecting lives and property in vulnerable areas.
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