The IMD has issued yellow alerts for the districts of Thiruvananthapuram, Kollam, Pathanamthitta, Alappuzha, Kottayam, Ernakulam, Idukki, Thrissur, Palakkad and Malappuram.
Tirumala Hills, the abode of Lord Venkateswara, has been receiving incessant rain since Wednesday, causing a lot of hardship to hundreds of devotees stranded there.
The IMD has achieved significant improvement in track, landfall, intensity and adverse weather including heavy rainfall, strong wind and storm surge forecast.