OPB News · West Coast Fog Not Following Climate Change Script

UW climate researcher Jim Johnstone has a little mystery on his hands. Johnstone is analyzing 60 years worth of cloud and fog observations recorded by airport weather stations along the West Coast.

He explains that under global warming coastal fog should be increasing over time.
...
Johnstone has found Washington coastal weather stations and Astoria are getting foggier over time. But fog along the rest of the Oregon coast hasn’t really changed over the last sixty years and California is slightly less foggy, not more.

July '09: Get ready for even foggier summers

The Bay Area just had its foggiest May in 50 years. And thanks to global warming, it's about to get even foggier.