River of Clouds

Two cities he has lived in have very different terrains, but some
similar atmospheric conditions.

Here in Pittsburgh, houses are arranged up and down ancient mountain
valleys where morning fog accumulates in the upper valleys and slowly
grow into valley-bound clouds as the coalescing moisture falls toward
the larger stream and river valleys. This morning, the Turtle Creek,
watershed and the Allegheny River valleys are so enshrouded,

allowing higher corridors such as Rt. 30 and I-376 to be blissfully
illuminated by bright late-summer morning sunlight.

San Francisco starts the day in bright sunlight everywhere, from the cool environment of downtown SF, Pacifica and other coastal
communities to the much warmer regions of peninsula communities
Redwood City & San Jose to East Bay and east valley communities.

In SF, though, the fog gathers through the morning over the ocean just
outside the city gates, as it were, the Golden Gate Bridge. After
noon, the flood gates seem to open, as the pent-up demand of ocean fog
to roll in over the unsullied waters of the SF Bay. Initially, the
careful water-hugging clouds stream in along the shipping channels...

but as the excitement builds, clouds leap up over poor fog-vexed
Pacifica and western SF neighborhoods and begin to over-run the high-
rise apartments and skyscrapers of fashionable downtown SF, north and east of Chinatown.

In Pittsburgh, the sun melts the morning moisture...in SF, the
inhabitants aren't so lucky.

..HF.

Sent from my iPhone