SAN FRANCISCO BAY WIND PATTERNS SITE MAP Francis L. Ludwig Observed Wind Over S.F. Bay How are the winds generated SFPORTS: Tides & Winds, Currents The Streakline and Archive pages are back up and running! Click on the map to get a precise reading Wind speeds are in knots. Arrow size indicates exact speed, color gives approximate speed. All speeds are for the wind at 10 meters above the surface ...