Even a gray morning will put a highway in a wall. It is the pitfall of motorists on the Highway 99 in California when the heavy Tule fog goes down the Central Valley and they can hardly see through a ...

Dense tule fog forms on clear, calm nights when the ground loses heat rapidly. And forecasters warn that the danger will ...

One person died earlier this month in a foggy crash on the same highway. Ten people were injured after 59 vehicles crashed Saturday on a California highway known for dangerous fog, according to the ...