Abstract: Thunderstorms in the vicinity of Johannesburg and Pretoria have been tracked by an S-band radar since 1971. A total of 181 individual cells which occurred during 1974/75 was selected for this study. Of these, the numbers ...

Abstract: Unusual features of a prefrontal squall line on 14 November 1975 observed by radar on the South African plateau are described. Some cells moved almost along the line at speeds of up to 65 km h?1.

Abstract: uring the late afternoon hours of 24 May 2005 a severe weather outbreak occurred in the state of S?o Paulo, southeastern Brazil. Severe thunderstorms were observed ahead of a surface cold front, including a (Southern ...