FRESNO, Calif. (KFSN) -- Dense Tule fog has settled across the valley floor for several weeks this season, reducing visibility and contributing to dangerous driving conditions, including pileup ...

The Tule fog has a long history of putting the San Joaquin Valley under conditions ripe for catastrophe, a situation made deadly over Fresno’s history when drivers haven’t taken precautions on Highway ...

A massive fog bank that has been blanketing much of California’s Central Valley with low-lying clouds since Thanksgiving time has prompted fears online of a mysterious and harmful “radiation fog,” but ...

Hours after a massive vehicle pileup shut down Highway 99 near Earlimart in dense tule fog, southbound lanes fully reopened, and Caltrans began guiding northbound traffic at Cecil Avenue as of 2:30 ...

California’s Central Valley has spent the past several weeks buried under a thick, unmoving layer of tule fog — the dense, ground‑hugging haze that can turn I‑5 and Highway 99 into walls of white with ...

A massive chain‑reaction crash involving as many as 150 vehicles shut down both directions of Highway 99 in Central California on Saturday morning, trapping drivers in near‑zero visibility and sending ...

While California's Central Valley was experiencing a persistent form of "radiation fog" in late 2025, the fog wasn't radioactive. In fact, radiation fog is the most common type of fog in most of the ...

Recent scary pile-ups on highways in California have been blamed on tule fog, a specific type of fog that's native to the state's Central Valley. The recent huge, fog-related pileups in California ...

Add Yahoo as a preferred source to see more of our stories on Google. Dense Tule fog has settled across the valley floor for several weeks this season, reducing visibility and contributing to ...