Apart from the heavy rain zones, moderate rainfall is expected to continue until Sunday across the Western Ghats districts. Showers are also likely in Chennai, Tiruvallur, Kancheepuram, Chengalpattu, Ranipet, Vellore, Tirupattur, Tiruvannamalai, Villupuram, Tiruchirappalli, Karur and Madurai.
The weather department added that a few other parts of Tamil Nadu could experience light rainfall during the same period.