The meteorological centre on Tuesday cautioned of moderate flash flood risk in isolated parts of seven out of 12 districts -- Kangra, Sirmaur, Chamba, Shimla, Kullu, Kinnaur and Mandi -- in Himachal Pradesh in the next 24 hours.

The weather office also issued an 'orange' alert of heavy to very heavy rain, thunderstorm and lightning at isolated places in the state on August 7 and 10 and 'yellow' warning of heavy rain on the remaining days till August 12.