SF Bay on Skywatch Friday

Skywatch Friday:  Looking toward San Francisco this afternoon from the Mormon Temple.  The past few days the clouds have started out a billowy, snowy white and stack up above the Oakland hills.  In the afternoon they start to get dark undertones.  Late afternoon they turn into a grey "marine layer."  Eventually the rain starts to fall in the early evening.  Mostly we're grateful because we sorely need the rain.