A 'Yellow' alert has been issued for Thiruvananthapuram, Kollam, Alappuzha, Kottayam, Kozhikode, and Wayanad districts. In districts with Orange alert, very heavy rain in isolated places has been predicted by the IMD, and could vary from 115.6 mm to 204.4 mm in the next 24 hours. �� Kerala Weather Forecast: IMD Predicts Heavy Rains in State, ‘Orange’ Alert in Pathanamthitta, Ernakulam, Idukki and Thrissur.