McInnis County Park in San Rafael, CA, Facing Mount Tamalpais

The Difference Just 14 Miles Can Make

From time to time I’ve noted, with some interest, the microclimates that abound here in the Bay Area. Yesterday I had an unusual experience, even by Bay Area standards, with how very different these micro climates can be!

McInnis County Park in San Rafael, CA, Facing Mount Tamalpais
McInnis County Park in San Rafael, Facing Mount Tamalpais

Just before dinner at my favorite pizza place—Mulberry Street Pizza, in San Rafael, we took a walk in the nearby marshlands (McInnis County Park). The temperature was a very warm (no, hot!), sunny, 84°. After eating too much pizza at dinner we drove to Fort Baker and walked along the breakwater by the Golden Gate. Completely different weather!

The microclimate at the base of the Golden Gate Bridge was total fog. You couldn’t see the bridge at all! The weather was very windy, and 55°—with an even lower wind chill.

That’s a 29° drop in temperature in under 14 miles!

Google Earth Map: San Rafael Fort Baker
Google Earth Map: McInnis County Park to Fort Baker
Angel Island in Fog
Angel Island in Fog Drift

Even Angel Island was being overcome by the rapidly mutating bank of fog. The fog horns were all blasting and continue to blast even as I write this.

I love the Bay Area weather!

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