California drought

El Nino San Francisco Bay Area

Update September 26, 2018: El Nino Prediction for Fall 2017 and Winter 2018

The weather phenomenon of El Nino, which has resulted in torrential rainstorms in the San Francisco Bay Area, is again building with the warming of the equatorial Pacific waters. According to the Climate Prediction Center of the National Weather Service, NOAA, "There is a 50-55% chance of El Niño onset during the Northern Hemisphere fall 2018 (September-November), increasing to 65-70% during winter 2018-2019."