local radar and Forecast

http://radar.weather.gov/ridge/radar.php?rid=mux&product=N0R&overlay=11101111&loop=no

Here is your forecast office:

http://forecast.weather.gov/MapClick.php?lat=37.77397129533325&lon=-122.28057861328125&site=mtr&smap=1&marine=0&unit=0&lg=en

The Feds do a wonderful if conservative job.

All I can do is polish on it a bit. Look at the radar and the wind and think locally. That works for individual systems but I usually can't guess any better than they can. Katrina was a rare exception.