Thunderstorm with Heavy rainfall and maximum surface wind speed reaching 40 kmph is very likely to occur at isolated places in the Pathanamthitta, Alappuzha, Kottayam, Idukki, Ernakulam, Kozhikode & Kannur (ORANGE ALERT: Valid for next 3 hrs) districts; Thunderstorm with Moderate rainfall and maximum surface wind speed reaching 40 kmph is very likely to occur at isolated places in the Malappuram, Wayanad & Kasaragod districts; Light rainfall is very likely to occur at isolated places in all other districts of Kerala.