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Earthquake Strikes |
7.0 Magnitude Earthquake Strikes Off Northern California Coast
SAN FRANCISCO – A 7.0 magnitude earthquake occurred Thursday morning off the coast of Northern California near Petrolia, Humboldt County. Initially reported as a 6.6 magnitude event, it was later upgraded by the United States Geological Survey (USGS).
A tsunami warning issued for coastal areas from Davenport, California, to the Oregon border was canceled shortly before noon. The National Tsunami Warning Center stated there is no ongoing tsunami threat.
Earthquake Details and Impacts
- Time and Location: The earthquake struck at 10:44 a.m. local time. The epicenter was offshore, near Petrolia.
- Tectonic Activity: The USGS described the quake as "primarily strike-slip," where horizontal plate movements reduce the likelihood of a significant tsunami.
- Affected Population: Over 1.3 million people were in areas where the earthquake could be felt. An estimated 5.3 million were initially under the tsunami warning.
Aftershocks and Alerts
- Aftershocks: At least 40 aftershocks have been recorded, with the largest being magnitude 5.0 near Ferndale.
- Shake Alerts: The USGS early warning system successfully issued alerts as far north as Lincoln City, Oregon, and as far south as Salinas, California.
Response and Recovery
- State of Emergency: Governor Gavin Newsom declared a state of emergency. Damage assessments are underway.
- Infrastructure Impact:
- Approximately 10,000 residents lost power in affected regions.
- Reports include cracked roads, a gas leak at a middle school, and minor roof damage in Ferndale.
- Rio Dell officials noted no injuries but reported structural issues like homes shifting from their foundations.
- Federal Support: President Joe Biden has been briefed, and FEMA is in communication with state and local authorities, ready to provide assistance if requested.
Safety Measures and Recommendations
- Aftershocks: USGS forecasts a 34% probability of a magnitude 5.0 or greater quake in the next week and a 5% chance of a magnitude 6.0 or larger. Residents should remain vigilant.
- Preparedness: Authorities advise residents to secure loose items, avoid damaged structures, and review emergency plans.
This marks the latest significant seismic activity in Northern California, a reminder of the importance of preparedness in earthquake-prone regions. For updates, monitor local authorities and the USGS.
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