It felt like a quick initial jolt followed up by three seconds of shaking to those of us in San Francisco. See what people thought about the latest rumblings of our San Andreas Fault over at SFist.com.
The updated report from the USGS indicates a 4.2 near the city of Milpitas.
Right here, “A” marks the spot:
A light earthquake occurred at 10:09:35 AM (PST) on Thursday, January 7, 2010.
The magnitude 4.2 event occurred 10 km (6 miles) ENE of Milpitas, CA.
The hypocentral depth is 9 km ( 6 miles).
| Magnitude | 4.2 – local magnitude (ML) |
|---|---|
| Time | Thursday, January 7, 2010 at 10:09:35 AM (PST) Thursday, January 7, 2010 at 18:09:35 (UTC) |
| Distance from | Milpitas, CA – 10 km (6 miles) ENE (62 degrees) Alum Rock, CA – 12 km (8 miles) NNE (12 degrees) Sunol, CA – 16 km (10 miles) SSE (150 degrees) San Jose City Hall, CA – 17 km (11 miles) NNE (29 degrees) |
| Coordinates | 37 deg. 28.6 min. N (37.477N), 121 deg. 47.8 min. W (121.797W) |
| Depth | 9 km (5.6 miles) |
| Location Quality | Excellent |
| Location Quality Parameters | Nst= 89, Nph= 89, Dmin=3 km, Rmss=0.08 sec, Erho=0.1 km, Erzz=0.4 km, Gp=36 degrees |
| Event ID# | nc71336726 |
| Additional Information | map with fault names Google Earth KML (Requires Google Earth.) ShakeMap shaking intensity maps NCSS First Motion Mechanism 1 |
As per usual, t’was the Northern Calaveras (it means “skulls”) branch of the San Andreas. Alum Rock, will you ever win?
Tags: (BART), 10:09, 10:10, 2010, 4.1, 4.2 magnitude, 7th, Alameda, alum rock, am, bay area, Bay Area Rapid Transit, branch, calaveras, california, Contra Costa, county, earthquake, Earthquake Hazards Program, january, light, magnitude, marin, milpitas, moderate, morning, Muni, resevoir, richter, richtor, san andreas, san francsico, san jose, San Mateo, Santa Clara, scale, sunol, TRACKS, transit, tunnel, U.S. Geological Survey, usgs
i felt that earthquake~i thought i was dreaming
Naturally I missed it because the building I work in allows me to feel everyones movement. I love earthquakes and am bummed I missed a 4.2 in Santa Clara!
I felt it. It startled me at first. But then I just started to ignore it. Then my daughter snuch up behind me and scared the crap out of me. That’s what made it bad.
i was out in the backyard with the dog sitting down when i felt dizzy. there were numerous birds singing in the trees. at that time all the birds flew away.
pinole, california
I was in my car, stopped on my driveway. The car started rocking. I thought my daughter in the backseat was doing something.
I felt it, in Sonoma County, my office is on the second floor of a wood frame house…gentle shaking for enough time to recognize it…that old familiar California feeling.
I agree, as I was in a meeting at the time with my team in bay area and redwood city and they really felt it!!! I was surprised when all at once say oooooohhhhhhhhh !!!!!
Oh God,
This is the first time i felt the earth quake as im from india it is not usual there. I was so scared.