Well this explains the cracking sounds I've been hearing at my place....Didn't hear anything on the local news radio stations about this though......
For links see article source.....
Posted for fair use.....
http://www.nbcbayarea.com/news/local/Quake-Swarm-Strikes-San-Ramon-332634961.html
Quake Swarm Strikes San Ramon
By Lisa Fernandez, Shawn Murphy and Adrian Holeyman
Published at 5:59 AM PDT on Oct 14, 2015
San Ramon experienced a quake swarm within the last 24 hours - by Wednesday morning, the small East Bay city had experienced 20 or so small earthquakes.
The largest ranked a magnitude of 3.0 reported about 8 a.m. Many were centered near the Crow Canyon Country Club. Five of the quakes were 2.0 or higher.
Senior US Geological Survey research geologist David Schwartz said the swarm is not all that unusual, noting that San Ramon Valley is at the "center of earthquake swarm activity" in the Bay Area. He recalled a swarm in 2003 of 120 earthquakes over 31 days in San Ramon, with the largest clocking in at a magnitude of 4.2.
The biggest swarm on record in the same general area, Schwartz noted, was in 1990 in Alamo. That's when 351 earthquakes struck over 42 days, with the largest recorded at a magnitude of 4.4.
Video Great White Shark Eats Sea Lion Off Alcatraz
Schwartz, who coincidentally lives nearby in Danville, was shaving in the bathroom when the largest quake recorded at a magnitude of 3.0 struck. "I thought at first a truck was passing by," he said.
As for why the swarms occur? "We just don't understand the structural geology of the swarms, why they turn on and shut off quickly," he said. "We just don't understand."
Recent Bay Area Quakes
In the past 24 hours, there have been 36 quakes.
This map shows all earthquakes near the San Francisco Bay Area for the past 24 hours. The darker blue circle shows the range weʼre filtering for.
Tiny, mostly unnoticeable quakes happen all the time in this part of the state. Some spots on the map will have several small quakes layered on top of one another. Zoom in for more detail. (Mobile users may want to click here for a better experience.)
Map by Scott Pham. Data: USGS
For links see article source.....
Posted for fair use.....
http://www.nbcbayarea.com/news/local/Quake-Swarm-Strikes-San-Ramon-332634961.html
Quake Swarm Strikes San Ramon
By Lisa Fernandez, Shawn Murphy and Adrian Holeyman
Published at 5:59 AM PDT on Oct 14, 2015
San Ramon experienced a quake swarm within the last 24 hours - by Wednesday morning, the small East Bay city had experienced 20 or so small earthquakes.
The largest ranked a magnitude of 3.0 reported about 8 a.m. Many were centered near the Crow Canyon Country Club. Five of the quakes were 2.0 or higher.
Senior US Geological Survey research geologist David Schwartz said the swarm is not all that unusual, noting that San Ramon Valley is at the "center of earthquake swarm activity" in the Bay Area. He recalled a swarm in 2003 of 120 earthquakes over 31 days in San Ramon, with the largest clocking in at a magnitude of 4.2.
The biggest swarm on record in the same general area, Schwartz noted, was in 1990 in Alamo. That's when 351 earthquakes struck over 42 days, with the largest recorded at a magnitude of 4.4.
Video Great White Shark Eats Sea Lion Off Alcatraz
Schwartz, who coincidentally lives nearby in Danville, was shaving in the bathroom when the largest quake recorded at a magnitude of 3.0 struck. "I thought at first a truck was passing by," he said.
As for why the swarms occur? "We just don't understand the structural geology of the swarms, why they turn on and shut off quickly," he said. "We just don't understand."
Recent Bay Area Quakes
In the past 24 hours, there have been 36 quakes.
This map shows all earthquakes near the San Francisco Bay Area for the past 24 hours. The darker blue circle shows the range weʼre filtering for.
Tiny, mostly unnoticeable quakes happen all the time in this part of the state. Some spots on the map will have several small quakes layered on top of one another. Zoom in for more detail. (Mobile users may want to click here for a better experience.)
Map by Scott Pham. Data: USGS
