Where I come from holds a world record of number of hailstone per year..about 50 days on average hail stones fall in Kericho every year..and has world record of 113 days I think 1965- that is about hailstorm every 3 days. Of course my place in Konoin once recorded I think rain nearly everyday in 1961 or some year like that.
In Kericho - when it suddenly rain - that is an hailstone - or when it rains & it's warm - that is hailstone coming.