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We've been getting "insincere fog" lately in the San Francisco Bay Area. During the summer, there is widespread dense fog which can cover the bay and last well into the next day. Years ago, in the Sunset district of San Francisco, one neighborhood went 40 days or so without seeing the sun.
Now that we're into the autumn, though, fog doesn't last so long in those same widespread areas. You might be driving in the morning before sunrise, admiring the dense fog which makes the traffic look surreal, and then by sunrise the fog has lifted. You look back at the commute and think it was a dream.
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Here we have a scene in Corte Madera, shortly before sunrise. The heavy stuff has vanished, but visibility is still limited. The birds don't care, they smell breakfast at the McDonald's. The crows love McGriddles and the seagulls fight over McMuffin scraps.
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A shot of a creek in Mill Valley. When I drove into town before sunrise, mist was hovering over the creek and making it seem like a scene from Scotland. When I had returned from downtown, minutes later, you could see the joggers. What a downer. Some joggers should not be seen.
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Some of the valleys will have dense fog well into the morning, even after nearby Fairfax and San Anselmo are cursed by clear skies. You'll listen to KCBS radio and they'll mention
pockets of dense valley fog. Here's Nicasio Valley around 9am.