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Magnitude 5.6 earthquake shakes Northern California, triggers alert across Bay Area

The U.S. Geological Survey said the quake was about 5 miles deep and nearly 657,000 ShakeAlert notifications were sent.

  • On Wednesday, a 5.6-magnitude earthquake struck Northern California at 8:10 a.m. near Redwood Valley in Mendocino County, according to the U.S. Geological Survey.
  • Moderate shaking rippled from Humboldt County to Sonoma County, triggering the USGS ShakeAlert system on many mobile phones across the region.
  • California Governor Gavin Newsom was briefed on the situation, while utility crews worked to restore power for 3,145 customers in Willits with no major injuries reported.
  • The National Tsunami Warning Center confirmed no tsunami danger, while the USGS reported a preliminary 2.5-magnitude aftershock occurring about seven minutes later.
  • With tectonic stress in California reaching critically high levels, scientists emphasize preparing 72-hour emergency kits with food, water, and medication for future seismic events.
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There hasn't been such a strong earthquake since 1940. It is not yet known whether the earthquake caused any serious damage.

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A 5.6-degree earthquake on the Richter scale occurred on Wednesday in northern California. According to authorities, several people were injured. The strong earthquake article also in California. Several people were injured, shocking images from the time of the earthquake appear first on Romania TV.

Right

An earthquake of 5.6 magnitude hit the north of California on Wednesday near Willits, Mendocino County, causing light injuries, disruptions of utilities and disruptions of commercial activities. Seismus comes in a tense context, after other earthquakes have been reported in Japan and Venezuela in recent days, amplifying concerns about global seismic activity.

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NBC Bay Area broke the news in San Francisco, United States on Wednesday, June 24, 2026.
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