causes of hail

Hail with white thunderstorms deleted 4 highland communes of Quang Nam province. Stone beads are as big as chicken eggs but according to the people, they have never seen such a

Hail lasted more than 15 minutes and took place on the afternoon of April 21, in Muong Xen town and some neighboring communes such as Ta Co, Huu Kiem and Huu Lap of Ky Son district