San Francisco is facing its first rainy weekend since mid-February — and it could end up as the Bay Area’s wettest Friday-Sunday stretch in more than a year.
Saturday afternoon will be the most likely time for widespread rainfall. A cold front is forecast to bring a few hours of heavy rain, gusty winds and even a chance of thunder and lightning. A half-inch of rain could fall in one hour in parts of the region as the front swings through from west to east. Minor urban and small stream flooding is possible.
Midday Friday will probably be the driest period of the next three days…