Magnitude 4.0 earthquake shakes San Francisco Bay Area
FREMONT, Calif. (AP) -- Authorities say a magnitude 4.0 earthquake has rattled the San Francisco Bay Area, but no injuries or property damage is reported.
The U.S. Geological Survey says the quake hit shortly after 2:30 a.m. Tuesday near Fremont, about 35 miles southeast of San Francisco. The initial magnitude was reported as 4.1 before being revised down. It struck at a depth of about 5 miles.
A series of much smaller aftershocks occurred, ranging in magnitude from 1.0 to 2.7.
Fremont police say there have been no reports of damage or injuries.
The quakes come nearly a year after a magnitude 6.0 earthquake struck the region. The August 2014 quake was the largest to hit Northern California in a quarter-century. That quake killed one woman and caused about $400 million in property damage in Napa Valley.
What people are saying on Twitter about the earthquake:
While you were sleeping, a magnitude 4.1 #earthquake struck outside San Francisco: http://t.co/aRtwI3h4yU (AP photo) pic.twitter.com/hqLhrop68n
— USA TODAY (@USATODAY) July 21, 2015
#EARTHQUAKE w/ magnitude 4.0 struck San Francisco Bay Area at 2:41am http://t.co/w3SA7UuDAM No report of damage pic.twitter.com/Y16IXCnRCm
— ABC7 Eyewitness News (@ABC7) July 21, 2015
4.0 Mag #earthquake in #Fremont considered "light" by @USGS but shook plenty of ppl awake. #Traffic: #BART still... http://t.co/4qonOYEHE4
— Stephanie Chuang (@StephChuang) July 21, 2015
#Earthquake is the #1 trending hashtag on @twitter. 4.0M rocked #BayArea before dawn, 4 tremors in #OK this AM. @AMHQpic.twitter.com/hxSdnZnU8l
— Anaridis Rodriguez (@Anaridis) July 21, 2015