I'm not seeing much of a wind shadow for that bridge, particularly at 4pm Friday. Maybe they updated the model already. Most of the onshore windflow begins after 11am goes from the cold (high pressure) pacific through the gg bridge, wraps around the east side of angel island and north past Richmond and Vallejo towards the hot (low pressure) central valley. South of SFO silicon valley is surrounded by tall geographic features and there's not much path to hotter (low pressure) zones so it's unusual to see high winds there unless there's a special offshore wind event coming from the south (most often in the winter).