Weather: Dense fog blankets hills to plains; Cold wave hits several North Indian cities
Dense fog and severe cold conditions have gripped large parts of North India, from the hills to the plains. Visibility has dropped below 50 meters in several regions, disrupting road, rail, and air traffic. The IMD has issued orange and yellow alerts in hill states, warning that foggy conditions may persist until December 31, while cold wave conditions continue in Punjab and Haryana.
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