Magnitude 4.0 earthquake hits San Francisco Bay – San Francisco Bay shakes when a magnitude of 4.0 earthquake hits the area.
According to the United States Geological Survey, A magnitude 4.0 earthquake struck at 2:41 a.m. near Fremont, but no injuries or property damage is reported.
Fremont is 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.
According to Elsi Wu, a visitor in San Francisco. “The glasses in the kitchen started clattering which woke me up, it was terrifying”.
USGS said that thirteen additional quakes followed the first earthquake, with the two strongest being magnitude 2.7 and 2.6 at 2:56 a.m. and 3:07 a.m. respectively.
A magnitude of 6.0 earthquake struck the area last August 2014 where more than 100 people were injured, damaged historic buildings, set home on fire and caused millions of dollars’ worth of damage.
Dr. David Schwartz, a USGS senior research geologist said that, the Hayward Fault is the most densely populated fault in California, with an estimated 2 million people living on it, and scientists say the fault has been very active the last 15 years. Tuesday’s quake is “an indication the stress level is high and the plates are getting tweaked”.
The last major earthquake on the Hayward Fault was a 6.8 shaker back in 1868.
After the magnitude 4.0 earthquake that hits San Francisco Bay, Scientists have calculated that there’s a 31 percent chance another big one will strike on the Hayward Fault in the next 30 years.
“It could happen in the next 30, 40 or 50 years, but we know sometime soon the Hayward Fault is going to pop. “Schwartz said.
In the next 30 years, The 2003 Working Group for California Earthquake Probability assigned a 27% probability that the Hayward-Rodgers Creek Fault system would produce a magnitude 6.7 or larger earthquake.IMAGE/bcnn1wp.wordpress.com