Rains persisted overnight in Tamil Nadu's Cauvery (Kaveri) delta areas, affecting standing paddy fields, and the India Meteorological Department warned on Wednesday that heavy to very heavy and extremely heavy rainfall is expected in a few spots in Cuddalore and Mayiladuthurai districts, both in the delta region, PTI reported.

Crops were submerged in the rains, either partially or completely at multiple places including those in and around Tiruvarur, Thiruthuraipoondi, Muthupettai, Mayilduthurai, Vedaranyam and as per rough estimates by farmers, crops about 2000 acres were affected.