Dec 2, 2012
A series of significant winter storms impacted the district during late November and early December 2012. The first storm arrived November 28 and then was followed by three more winter storms. Each brought strong and gusty winds, heavy rainfall, high surf, and flooding to the region. The second storm happened on the 1st and 2nd of the month, with the third and final storm on the 5th of December.
Source: NOAA National Weather Service Storm Events Database (event 426214). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Contra Costa County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.