Weekly Photo Challenge ~ Forces of Nature in San Francisco

Brie Anne Demkiw, in the Weekly Photo Challenge, has asked us to show the forces of nature from our corner of the world; she does make mention of the fast-moving fog in San Francisco,  so I thought I’d show an example of that. I’ll warn potential visitors that the day can start with fog, bloom into a warm sunny day, but when the evening fog starts to roll in you’d better have a jacket or sweater at the ready.