Thick, heavy fog has been blanketing California’s Central Valley for weeks, reducing visibility on roads and obscuring street ...

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

Tule fog is choking California’s Central Valley. Here's how it forms and why it's forming less often despite heavy fog this ...

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 ...

Dense tule fog has gripped the Central Valley, cutting visibility on I‑5, 80 and 99. Where it's worst, driving safety tips, ...