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Earthquake Swarm, Including Magnitude 4.0, Shakes East Bay Cities
KPIX San Francisco ^
| May 3, 2015
| AP/CBS
Posted on 05/03/2015 4:44:44 PM PDT by John W
CONCORD (CBS/AP) A string of moderate earthquakes has rattled the East Bay Sunday, shaking buildings. There were no immediate reports of injuries or damage.
The U.S. Geological Survey says an earthquake with a preliminary magnitude of 4.0 hit at 2:13 p.m. Sunday. It was centered a mile south of Concord.
Three smaller quakes shook the area in the moments before and after the larger one. A magnitude 2.5 earthquake hit at 2:01 p.m., followed by the 4.0 at 2:13, and a 2.7 magnitude quake at 2:14 p.m. A magnitude 2.4 shook the area again at 2:28 p.m. A magnitude 1.6 hit at 2:56 p.m.
(Excerpt) Read more at sanfrancisco.cbslocal.com ...
TOPICS: News/Current Events; US: California
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To: Yo-Yo
There was one in Dallas this morning at 10:15. A 3.2
To: Polynikes
Why does the shallow depth cause concern?
22
posted on
05/03/2015 9:05:50 PM PDT
by
Nuc 1.1
(Nuc 1 Liberals aren't Patriots. Remember 1789!)
To: Nuc 1.1
A shallow depth EQ’s shaking and resultant damage can be much worse at lower magnitude than one that is deeper but larger. If these relatively small EQ’s are precursors to a larger EQ but at the same depth and it is something say in the 5.0’s at 1km or then the damage/shaking will be greater than if the EQ is at say 20-30 km.
23
posted on
05/03/2015 9:30:00 PM PDT
by
Polynikes
(What would Walt Kowalski do. In the meantime "GET OFF MY LAWN")
To: Polynikes
24
posted on
05/03/2015 9:49:45 PM PDT
by
Nuc 1.1
(Nuc 1 Liberals aren't Patriots. Remember 1789!)
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