Oakland, across the bay from San Francisco, has a Mediterranean climate with around 580 mm (about 23 inches) of rain a year, concentrated almost entirely in winter with a long, dry summer typical of the Bay Area. The surrounding Oakland Hills, scarred by past wildfires including the catastrophic 1991 firestorm, are particularly prone to landslides and debris flows when intense winter rain, especially from atmospheric river events, falls on slopes with reduced vegetation to hold soil in place. Because a typical summer week here involves no rain at all, radar is most useful during the concentrated winter storm season, particularly for hillside neighborhoods. NWS Doppler radar KMUX (San Francisco Bay Area) covers the region.
Learn more: How Does Rain Radar Work? · Open the full Rain Map