San Francisco earthquake strikes again: a second earthquake struck San Francisco just six hours after the first. Both quakes occured almost 22 year to the day after the deadly Loma Prieta earthquake of 1989.
Two earthquakes jolted the San Francisco Bay area, Thursday.
The U.S. Geological Survey says a quake with a preliminary magnitude of 3.9 hit at 8:16 p.m., about two miles east of Berkeley.
The earthquake Thursday night comes after a 4.0 earthquake hit in the same area nearly six hours earlier.
Berkeley police say they have no reports of damage or injuries from either quake.
Thursday's quakes come almost 22 years to the day after the Loma Prieta earthquake struck the Bay area during the 1989 World Series.
The magnitude-6.9 quake killed 63 people, injured almost 3,800 and caused up to $10 billion damage.