Abstract: By using data of auto-observing weather station observations, weather radar echoes, satellite images, surface observations and wind profiles, eight severe weather events which were initiated by sea breeze fronts in the Pearl River Delta, Guangdong Province during the first half of July 1998 are investigated and a severe local storm event in 3 July 1998 is completely and systematically analyzed. A pattern and some activity characteristics of such severe local storms are inducted.