Anearthquakerattled the greater San Francisco Bay Area on the morning of Nov. 24, according to the United States Geological Survey.
The epicenter of the 3.9 magnitude temblor was located a less than a mile from the The Geysers in Sonoma County, where the world's largest developed geothermal field is located.
The region is about 75 miles north of San Francisco.
The quake was reported just before 7:10 a.m., the USGS reported, and was followed by an aftershock with a preliminary magnitude of 2.8.
The quake was given a preliminary magnitude of 4.1, but officials with USGSlater downgraded it 3.9.
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Earthquake registered nearly a mile deep
As of about 12:30 p.m. PT, no injuries had been reported by local emergency officials.
Data provided by USGS showed the earthquake was just over 1 mile deep.
As of early Monday afternoon, no damage had been reported from the quake.
Earthquake magnitudes
Here are the effects of earthquakes of various magnitudes, according toMichigan Technological University:
Below 2.5: Generally not felt
2.5 to 5.4: Minor or no damage
5.5 to 6.0: Slight damage to buildings
6.1 to 6.9: Serious damage
7.0 to 7.9: Major earthquake, serious damage
8.0 or greater: Massive damage, can destroy communities
Natalie Neysa Alund is a senior reporter for USA TODAY. Reach her at nalund@usatoday.com and follow her on X @nataliealund.
This article originally appeared on USA TODAY:Earthquake north of San Francisco Bay Area measures 3.9 magnitude
