The Idukki Collector warned the people living downstream the Idukki dam and along the banks of Periyar river to remain cautious.
Kerala received 567 millimetre of rainfall between October 1 and 28, going past the 1999 northeast monsoon rain record of 566 mm.
The Met Department has forecast 'isolated very heavy rainfall' for Kerala and Mahe on October 26 (Tuesday).
By October 16 the two low-pressure areas are even expected to come together like twins, possibly changing the course of rains in central India.
The deep depression in the Arabian Sea intensified into Cyclone Shaheen on Friday morning.
The easy-to-understand imagery made it go almost viral on WhatsApp and young or old alike, people wondered and shuddered at the intensity of the cyclones.
The India Meteorological Department (IMD) issued an orange alert for the districts of Ernakulam, Idukki, Kozhikode, Wayanad and Kannur in Kerala.
Heavy downpour and the overflowing of a river have been cited as the reasons. Konkan Railway officials said that the passengers were safe.
IMD has issued Orange alert for Pathanamthitta and Idukki districts on Decemberv1 and for Thiruvananthapuram and Kollam districts on December 2.
Thalassery in Kannur district recorded the maximum of nine cm of rainfall in the state on Sunday while most districts continued to witness good spells for the past few days.