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Northern California’s Strongest Quake Since the 1940s Shakes Mendocino County
A powerful 5.6 earthquake rattled Northern California’s Mendocino County, injuring residents, knocking goods off store shelves, cutting power to thousands, and sending officials scrambling to assess the damage. Experts warn that more aftershocks are likely in the coming days.
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What began as an ordinary morning in Northern California turned into an emergency within seconds, when a 5.6-magnitude earthquake struck Mendocino County, north of the city of Ukiah. The quake was felt hundreds of kilometers away, and thousands of residents rushed out of their homes as the ground began to shake violently.
The earthquake struck at 8:10 a.m. local time, near the town of Willits, about 11 kilometers north of Redwood Valley. Its epicenter was at a depth of about 8 kilometers — a factor that intensified the shaking felt at ground level. The quake was initially estimated at magnitude 6.0, but after analyzing the data, the United States Geological Survey updated it to 5.6.
According to seismologists, this was the strongest earthquake to hit the area since 1940, and one of the most significant recorded along the Maacama Fault in recent decades.
No fatalities were reported, but several people were injured to varying degrees, although local authorities have not yet released an exact number of casualties. Emergency crews continue to search the area and assess the extent of the damage. In many places, buildings and businesses were damaged, and in supermarkets, shelves loaded with products collapsed — but fortunately, the store had not yet opened its doors to the general public.
More Than a Million Early Alerts Were Sent to Residents by the Seismic Warning System
The earthquake also caused widespread power outages. More than 6,000 residents in six different towns were cut off from electricity, and at the height of the event, the number of customers without power reached nearly 10,000. Electric company crews worked for long hours to gradually restore service.
Water systems were also damaged in some areas, and authorities urged the public to avoid unnecessary travel on major roads so rescue and inspection teams could quickly reach every reported site.
Although the epicenter was in a relatively rural area, the shaking was also clearly felt in more distant cities such as San Jose, Sacramento, and Santa Rosa, as well as in other parts of Northern California. The seismic warning system sent more than a million early alerts to residents — allowing many of them to get to a protected place before the earthquake actually struck.
According to the United States Geological Survey (USGS), there is a high probability of continued aftershocks in the coming days, although the chance of a stronger earthquake is considered low. At the same time, California Governor Gavin Newsom was briefed on the developments and instructed state emergency authorities to work together with local officials to assess damage, assist residents, and restore essential services as quickly as possible. Hospitals in the area continued operating as usual, and no significant damage to critical infrastructure was reported.
