• Dense fog is affecting visibility across North India, with the IMD issuing weather alerts for harsh winter conditions.
• Heavy snowfall in Jammu and Kashmir marks the start of 'Chillai Kalan,' potentially disrupting traffic on key routes.
• Rajasthan, Himachal Pradesh, Uttarakhand, Delhi-NCR, and Uttar Pradesh are all bracing for cold waves, dense fog, and sub-freezing temperatures.