Dangerous Dense Fog This Morning

We have flight arrival delays into SFO this morning.  I'm hearing of flight cancellations at SJO, so far, 5 Southwest flights.

Update:  I thought 9AM was a little generous with the depth and widespread nature of the fog, especially this time of year with the low sun angle.  The National Weather Service thinks the same now and extended our Dense Fog Advisory to 11 AM.

Mike