Heavy Rain (>15mm/ hour) with surface wind speed likely to be 40- 50 Kmph(in Gusts) is very likely to occur at a few places over Alappuzha, Ernakulam, Idukki, Kannur, Kasaragod, Kottayam, Kozhikode, Malappuram, Wayanad, Lakshadweep District in next 3 hours.