Isolated heavy rain showers are expected in the hilly areas of Kerala for two more days. A yellow alert has been issued in all the districts except Thiruvananthapuram and Kollam today and tomorrow. People have been urged to be vigilant as there will be strong winds and thunderstorms. However, the meteorological department informed that fishing is permitted along the Kerala-Karnataka-Lakshadweep coast.<br />''<br />''Meanwhile, the shutters of Mullaperiyar and Idukki dams were opened as the water level in the dams are on a continuous rise due to the incessant rain. Authorities urged the residents on both sides of the Periyar and Cheruthonni to be extra vigilant.<br />