Ditwah Cyclone: NDTV's VijayaGopal Muralidharan reports from Chennai's Pattalam as heavy rains triggered by Cyclone Ditwah affect Chennai and other low-lying areas in Tamil Nadu. The India Meteorological Department (IMD) on Tuesday issued a red alert for Tiruvallur, Chennai, Kancheepuram, and Chengalpattu districts in Tamil Nadu, as heavy rains from Cyclone Ditwah are expected to batter the state. Issuing a red nowcast warning, IMD predicted heavy spells or more than 15 mm/hr accompanied by moderate Thunderstorms with maximum wind speed 40-60 kmph. #CycloneDitwah #TamilNaduNews #TamilNadu #NDTVDigitalOriginals #CycloneNewsToday