Abstract: A dense network of hail observers has been established in the Pretoria-Johannesburg area of the Transvaal, South Africa, permitting an investigation of the relationship between hail frequency and observational area. Three ...

Abstract: tract

Abstract: A method is given for deriving the probability that a circular hail area within a certain ?operational? area will fall on an inner area. Results are very similar to those calculated by Magaziner and Weickmann for straight-line ...

Abstract: Detailed climatological studies of hailstorms on the South African plateau have been made using a dense network of voluntary observers. Hailstone structures have been investigated and, since 1971, radar observations have ...