Watch the forecast of the upper-air flow from now to the start of February. In the forecast animation a colder-than-normal upper-air pattern is blue, green and purple.

This upper-air flow forecast shows when the atmosphere is colder than normal, leading to a chill here at the ground. Upper-air forecast at 15,000 feet showing when the atmosphere is colder than ...

Due to an upper air circulation, thunderstorms are expected in Tamil Nadu, Puducherry, and Karaikal. Chennai and its suburbs are also likely to experience light rain today Chennai Weather Several ...