The Regional Meteorological Centre (RMC) has forecast heavy to very heavy rain at isolated places in Pudukottai, Sivaganga, and Ramanathapuram districts on Monday. 

Heavy rain is likely to occur over isolated places in Kanniyakumari, Tirunelveli, Thoothukudi, Tenkasi, Virudhunagar, Madurai, Theni, Dindigul, Karur, Tiruchi, Thanjavur, Tiruvarur, and Nagapattinam districts. 

The remaining parts of Tamil Nadu, Puducherry, and Karaikal are likely to witness moderate rain with thunderstorms and lightning at many places. Several areas are likely to witness gusty winds during the thunderstorms, at speeds reaching 40 kmph to 50 kmph.

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