That Bump in the Night—An Earthquake

Less than six hours after the East Coast is surprised by a strong shaker, the Bay Area is stirred by a little seismic activity of its own.

Piedmont got a jolt at 11:37 p.m. Tuesday when a 3.6-magnitude earthquake rattled the Bay Area. 

The U.S. Geological Survey mapped the epicenter a half mile east of Oakland Zoo near the Hayward Fault in the Oakland Hills. The quake had a depth of 5.6 miles, according to the USGS.

As of 8:30 a.m. Wednesday, the Geological Survey had received more than 6,000 responses to its request for reports from those who felt the late night quake. 397 responses came from the zip codes Piedmont shares with Oakland; one came from as far away as Mammoth Lake.

The quake came less than six hours after the East Coast was shaken by that region's strongest earthquake since World War II. That quake, centered in Virginia and registering 5.8 on the Richter scale, led to evacuations of the White House and Capitol.

Did you feel it? Tell us in the comments.

Amy Jeffries August 24, 2011 at 04:00 PM
I felt a lump move under my feet like there was a boogie monster crawling under my nightstand.
Miguel August 24, 2011 at 05:25 PM
Does the City have a an earthquake emergency plan? Communications, reporting/gathering sites, news, etc.?
Amy Jeffries August 24, 2011 at 06:25 PM
At 9:57 a.m. this morning, another 3.5-magnitude tremor shook in the same spot as last night's quake, according to the USGS: http://earthquake.usgs.gov/earthquakes/dyfi/events/nc/71625585/us/index.html
Amy Jeffries August 24, 2011 at 06:36 PM
There was also a 2.3-magnitude shake in the same place 4.9 miles deep at 11:42 p.m. Tuesday night, and a 1.5-magnitude 4.3 miles deep at 1:33 a.m. this morning.
Wendy Hanson August 24, 2011 at 07:49 PM
WOW! I friend said he felt it in Lafayette---thanks for the update Amy.
Amy Jeffries September 09, 2011 at 04:13 PM
In the case of any major disaster, the response would be directed by a general incident command staff: http://patch.com/A-lBvG
Wendy Hanson September 09, 2011 at 04:23 PM
I'm by Lake Merritt and didn't feel a thing. I guess that's good! Thanks Amy--Patch was amazing when the East Coast had Hurricanes...it's a great resource!


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