UP: Severe cold, dense fog, cold wave alert from Dec 12; zero visibility expected.

• Uttar Pradesh is under alert for severe cold, dense fog, and cold waves.
• Dense fog is expected in several districts of Eastern and Western UP on December 12, potentially reducing visibility to zero.
• Moderate to light fog is also predicted for many Purvanchal districts, with visibility possibly between 500-700 meters.
• A new weak Western Disturbance from December 13 will affect the Himalayan region, causing a 3-4 degree Celsius rise in minimum temperatures.

Why It Matters: UP residents must prepare for severe cold, dense fog, and poor visibility.