Tamil Nadu Floods Warning for Oct–Dec 2026: Expert Panel Tells CM Vijay to Prepare Now

Why this matters to Tamil Nadu

This is not a routine weather advisory — it is a formal expert panel report to the Chief Minister carrying an explicit flood preparedness directive for the October-December 2026 period. TNAU has separately projected 468 mm of NEM rainfall for Tamil Nadu — slightly above the 464 mm average — with coastal districts expected to receive excess rain and interior regions facing deficit. A Super El Niño-driven NEM following a 26% SWM deficit creates a paradox: Tamil Nadu could experience coastal flooding and inland water scarcity simultaneously. For residents in Chennai, Nagapattinam, Cuddalore, and southern coastal districts, the October-December flood risk is real and preparing now — clearing drains, securing documents, identifying shelter routes — is the direct actionable response to this warning.