Visuals of heavy snowfall from across the globe

The MET on Friday sounded an orange alert for the national capital for two days till Sunday after icy winds blowing from the snow-clad Himalayas brought down the city's mercury to nearly 3 degrees Celsius. It will be a cloudy Saturday with fog causing trouble for traffic till Monday.

The IMD has four colour-coded warnings as per the intensity of any weather system -- green, yellow, orange and red. Orange alert is given to authorities to be prepared.