Ironically I first heard of it from a Tweet from Kos:
markos Markos Moulitsas
Woah, that was a quake!
The USGS was slow on getting the info out. But they soon updated as I posted below.
? (uncertain or not yet determined)
Date-Time
Thursday, October 20, 2011 at 21:41:04 UTC
Thursday, October 20, 2011 at 02:41:04 PM at epicenter
Location 37.864°N, 122.247°W
Depth 8.4 km (5.2 miles)
Region SAN FRANCISCO BAY AREA, CALIFORNIA
Distances
3 km (2 miles) ESE (109°) from Berkeley, CA
5 km (3 miles) NE (48°) from Emeryville, CA
5 km (3 miles) NNW (344°) from Piedmont, CA
8 km (5 miles) NNW (348°) from Oakland, CA
Location Uncertainty horizontal +- 0.3 km (0.2 miles); depth +- 0.5 km (0.3 miles)
Parameters Nph= 24, Dmin=1 km, Rmss=0.1 sec, Gp= 47°,
M-type="Nuttli" surface wave magnitude (mbLg), Version=0
Updated USGS display:
Magnitude 4.2
Date-Time
Thursday, October 20, 2011 at 21:41:04 UTC
Thursday, October 20, 2011 at 02:41:04 PM at epicenter
Location 37.864°N, 122.249°W
Depth 9.8 km (6.1 miles)
Region SAN FRANCISCO BAY AREA, CALIFORNIA
Distances
2 km (2 miles) ESE (112°) from Berkeley, CA
5 km (3 miles) NE (47°) from Emeryville, CA
5 km (3 miles) NNW (341°) from Piedmont, CA
8 km (5 miles) NNW (346°) from Oakland, CA
Location Uncertainty horizontal +- 0.2 km (0.1 miles); depth +- 0.4 km (0.2 miles)
Parameters Nph= 90, Dmin=2 km, Rmss=0.18 sec, Gp= 22°,
M-type=local magnitude (ML), Version=3
Source
California Integrated Seismic Net:
USGS Caltech CGS UCB UCSD UNR
Event ID nc71667366
2:57 PM PT: Kos is reporting one injury via Tweet:
Wife reports one of our Rasbora Espeis freaked out and jumped out of its tank, and is now hanging on for dear life. #calamity
snark
Downgraded to a 3.9:
Magnitude 3.9
Date-Time
Thursday, October 20, 2011 at 21:41:04 UTC
Thursday, October 20, 2011 at 02:41:04 PM at epicenter
Location 37.864°N, 122.249°W
Depth 9.8 km (6.1 miles)
Region SAN FRANCISCO BAY AREA, CALIFORNIA
Distances
2 km (2 miles) ESE (112°) from Berkeley, CA
5 km (3 miles) NE (47°) from Emeryville, CA
5 km (3 miles) NNW (341°) from Piedmont, CA
8 km (5 miles) NNW (346°) from Oakland, CA
Location Uncertainty horizontal +- 0.2 km (0.1 miles); depth +/- 0.4 km (0.2 miles)
Parameters Nph= 90, Dmin=2 km, Rmss=0.18 sec, Gp= 22°,
M-type=regional moment magnitude (Mw), Version=5
Source
California Integrated Seismic Net:
USGS Caltech CGS UCB UCSD UNR
Event ID nc71667366
3:31 PM PT: H/T Wu Ming Disaster preparedness diary:
http://www.dailykos.com/...