The IMD has issued very heavy rainfall warnings for Saturday and Sunday. An orange alert for very heavy rainfall of 12-20 cm has been sounded for Ernakulam, Idukki, Thrissur, Palakkad, Malappuram, Kozhikode, Wayanad, Kannur and Kasaragod on Saturday.

from Times of India https://timesofindia.indiatimes.com/city/kochi/kerala-imd-issues-orange-alert-for-9-districts-predicts-very-heavy-rainfall/articleshow/85713752.cms