A Magnitude 5+ earthquake was just (last 1/2hr) recorded in San Francisco.
Stay tuned for more details and please write any information or links you have in the comments section.
San Francisco Earthquake map:
http://quake.usgs.gov/recenteqs/latest.htm

UPDATES:
2033: NOAA has recorded the event and has a GREEN light posted on their live tsunami warning page:
http://wcatwc.arh.noaa.gov/
Here’s the live (this should update automatically but check the link above to be sure) map:

RSS FEEDS:
Twitter SFQuake
Pacific Coast Tsunami Warnings
USGS ShakeMaps
Mapping Links:
Google Earth Earthquake KML File
San Francisco Earthquake – Live Map
USGS Earthquake Mashup
EMSC Live Earthquake Mashup.
Updates from local citizens:
Did you feel it? USGS community quake map:

Tools and Links:
Sign-up for Earthquake ALERTS via email
SMS / TEXT Alerts for San Francisco
Google Earth KML
Display real-time earthquakes and plate boundaries in Google Earth (requires version 4+). To display earthquakes, download one of our earthquake KML files (below) and open it in Google Earth. Earthquakes refresh every 5-minutes in Google Earth. More Google Earth files »
RSS Feeds
Contains basic information (date, location, and magnitude) about each earthquake and a link to a detailed report. More information »
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M 2.5+ earthquakes, past day RSS 2.0 CAP
Updated: Wed Oct 31 03:13:47 UTC (6 kB)
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M 2.5+ earthquakes, past 7 days RSS 2.0 CAP
Updated: Wed Oct 31 03:13:47 UTC (61 kB)
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M 5+ earthquakes, past 7 days RSS 2.0 CAP
Updated: Wed Oct 31 03:13:48 UTC (7 kB)
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USGS Earthquake ShakeMaps RSS 2.0
Updated: Wed Oct 31 03:05:03 UTC
CSV Files
Comma separated ASCII text files containing the source network (Src), ID (Eqid), version, date, location, magnitude, depth and number of reporting stations (NST) for each earthquake. Note: files are not inclusive (the past day file does not include past hour events, for example).
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Updated: Wed Oct 31 03:17:02 UTC (55 B)
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Updated: Wed Oct 31 03:17:02 UTC (5 kB)
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Updated: Wed Oct 31 03:17:02 UTC (46 kB)
Merged Catalog in XML Format
Unlike the RSS Feeds, this XML file contains all available parameters, including date, location, magnitude/magnitude type, number of stations/phases used for location, distance to first station, RMS/horizontal/vertical errors, and more. The minimum magnitude of events included in the XML merged catalog varies from region to region depending upon the density of the reporting networks.
Merged Catalog in Cube Format
Cube format is a fixed-format, card-like version of the information in the merged catalog. It contains the same information provided in the XML format, except that there is no information on ‘duplicate’ event ids, which occur when networks other than the authoritative network submit information on the same event. The minimum magnitude of events included in the Cube catalog varies from region to region depending upon the density of the reporting networks. More information »
Moment Tensors via Email
Sends a message that contains the estimate of the seismic moment tensor for earthquakes with either a body-wave magnitude (mb) or surface-wave magnitude (MS) of 5.5 or greater. More information »
QED Post
Sends a daily message of the earthquakes located 7 days behind the current day taken from our Quick Epicenter Determinations (QED) listing. It is a preliminary publication and typically contains 10-30 events per day. More information »
Weekly Seismicity Reports for Northern California
The Weekly Reports contain information on earthquakes in Northern California.
Real Time (10min delay) seismometer chart – Berkeley, CA Station;

AFTERSHOCK Forecast Map:
