and Hydrometeorological Conditions Associated with the Historic Winter 2017
Heavy Rainfall and Flooding Events in the San Francisco Bay Region
Warren Blier, DOC/NOAA/NWS San Francisco Bay Area, Monterey, CA
Mark Strudley, DOC/NOAA/NWS San Francisco Bay Area
Meteorological and Hydrometeorological Conditions Associated with the Historic Winter 2017 Heavy Rainfall and Flooding Events in the San Francisco Bay Region
Warren Blier and Mark Strudley
NOAA/NWS WFO San Francisco Bay Region/Monterey
During the period 3 January to 21 February 2017, a series of strong Atmospheric River events brought record and near-record rainfall amounts to the greater San Francisco Bay Region. The California Department of Water Resources rain gauge at Venado, in the coastal mountains 67 miles (108 km) north-northwest of San Francisco, recorded 84 inches of rain in this less than 2-month interval. Widespread flooding resulted, including historic flooding in the City of San Jose that led to the evacuation of 50,000 residents and damage estimates in excess of $70 Million.
This presentation will examine the meteorological and hydrometeorological conditions that resulted in this historic heavy rainfall and flooding. With this occurring under ENSO-neutral conditions, the associated synoptic-scale evolution will be compared with that of the similarly anomalously wet 1982-83 and 1997-98 El Nino winters. In addition, the complex interplay of rainfall and flood infrastructure will be considered.