Dec 11, 2014
An Atmospheric River event brought heavy rain and gusty winds with a strong winter storm that impacted the Bay Area for several days in mid-December. Cyclogenesis occurred with a 979 mb low forming off the Northern California coast. On December 11, the intense surface low moved up the coast and drug a narrow cold frontal rainband (NCFR) through the Bay Area that morning and early afternoon. NCFRs are rapidly moving fronts that are notorious for intense rainfall and gusty winds despite having lim
Source: NOAA National Weather Service Storm Events Database (event 547290). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Alameda County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.