Dense fog and a cold wave are severely impacting Punjab, with an orange alert issued for districts like Kapurthala, Jalandhar, and Ludhiana. The fog has caused a truck to overturn in Amritsar, leading to traffic jams and multiple vehicle collisions due to extremely poor visibility. Flight operations at Chandigarh and Amritsar airports have also been significantly disrupted, with delays and cancellations. Authorities are advising drivers to exercise extreme caution and avoid non-essential travel.