Dharamshala, Aug. 14 -- The India Meteorological Department (IMD), Shimla, has predicted heavy rainfall to continue in Himachal Pradesh till August 19 and issued alerts for several districts during this period. For August 14, the weather office has issued an orange alert for heavy to very heavy rainfall in Mandi and Sirmaur districts, while a yellow alert for heavy rainfall has been issued in Una, Bilaspur, Chamba and Kangra. The department has issued a yellow alert for August 15 in Bilaspur, Hamirpur, Kangra, Kullu, Mandi, and Sirmaur, followed by similar alerts for Kangra, Mandi, Shimla, and Sirmaur on August 16. An orange alert for heavy to very heavy rainfall has also been issued for August 17 in Bilaspur, Kangra, and Sirmaur districts. IMD officials said that thunderstorms, lightning and gusty winds (30-40 kmph) are also likely at isolated places over low hills and mid hills till August 19. On Thursday, rainfall was observed in few parts of the state including Dharamshala, Mandi and Bilaspur. During the last 24 hours, light to moderate rain at isolated places was observed over the state. The highest rainfall of 22mm was recorded in Rohru, followed by Khadrala (17mm), Kasauli (12mm), Kukumseri (4.2mm), Sarahan (2.1mm), Kothi (2mm), Palampur (1.4mm) and Jubberhatti (0.4mm). According to officials, 136 roads remained blocked in the state on Thursday, with 48 road closures in Mandi district alone, followed by 37 in Kullu and 26 in Shimla district. Moreover, 242 water supply schemes remained disrupted across the state....