We’ll be discussing advection fog in this addition of Weather Tidbits. Advection fog forms when relatively warm and moist air moves over a relatively colder surface. Many time the cold surface in ...

Fog is simply a cloud that forms at ground level. It looks like a gray blanket in the air, making it hard to see roads, ...

California's Central Valley is no stranger to Tule fog, but the recent event has been extraordinary. A massive fog bank stretched nearly 400 miles, blanketing millions of residents and shutting down ...

Add Yahoo as a preferred source to see more of our stories on Google. Thick, heavy fog has been blanketing California’s Central Valley for weeks, reducing visibility on roads and obscuring street ...