Rare rime ice and ground-level ice crystals form across Boise as deep temperature inversion creates perfect conditions for dual winter phenomena.

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

Layers of the grey gloom have covered the region since the beginning of the year, decreasing visibility and making conditions ...

Question: I was preparing for a night flight to get night current. It was a cold but clear night with a full moon. In the middle of the taxi to the runway at the nontowered airport, the fog dropped ...