Shimla, April 17 -- Weather mainly remained dry in Himachal Pradesh on Thursday, with a wet spell predicted in Shimla on the weekend. The Met department issued an Orange alert of hailstorm, thunderstorm with lightning and gusty winds (speed 40-50 kmph) at isolated places in Kangra, Kullu, Mandi, and Shimla on Friday. It issued a yellow warning for a thunderstorm with lightning and gusty winds (speed 30-40 kmph) at isolated places in Chamba, Kangra, Kullu, Mandi, and Shimla on Saturday and Sunday. On Thursday, Keylong was the coldest at night, recording a minimum temperature of 1 degree Celsius, while Una was the hottest at 35.4 degrees Celsius....