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An earthquake has struck San Francisco. The preliminary magnitude was 2.7 according to the U.S. Geological Survey. A tsunami warning has not been issued. Details from the USGS:


Wednesday, November 23, 2011 at 16:26:54 UTC

Wednesday, November 23, 2011 at 08:26:54 AM at epicenter

Location: 37.384°N, 121.742°W

Depth: 6.9 km (4.3 miles)

Distances from epicenter:

8 km (5 miles) ENE (76°) from Alum Rock, CA

14 km (9 miles) ENE (70°) from San Jose City Hall, CA

15 km (9 miles) ESE (113°) from Milpitas, CA

This article will be updated if the event proves significant.