Cyclone Ditwah moving towards North Tamil Nadu and Puducherry; orange alert issued for Chennai, Tiruvallur, Kancheepuram.
Red alert declared for Thanjavur, Tiruvarur, Nagapattinam, and Mayiladuthurai; extremely heavy rain (>20 cm) expected.
School holiday updates: High likelihood of closure in red-alert districts for November 29-30; official announcements pending.
Heavy rain alert extends to coastal Andhra Pradesh and Yanam; disaster management teams on high alert.