More districts can expect heavy rainfall till May 19 (Sunday), indicated weather forecasts on Wednesday.
Ernakulam, Pathanamthitta and Idukki are on yellow alert for isolated heavy rainfall (7-11 cm in 24 hours) on Thursday. Rain or thundershower is most likely to occur at most places in Kerala till May 21 (Tuesday), according to the IMD Meteorological Centre here.
Rainfall is expected to strengthen in more districts from Friday, especially in Thiruvananthapuram, Kollam, Pathanamthitta, Idukki, Ernakulam, and Alappuzha. Thrissur, Palakkad and Malappuram also stand to receive more rainfall by May 19 (Sunday), as per the latest update.