A 'southerly buster' is a term that refers to a weather phenomenon, particularly in Australia, where a high-pressure system in the east over the Tasman Sea generates brisk south to south-westerly winds in south-eastern Australia during the summer months. Synonyms for 'southerly buster' include 'southerly change', 'southerly wind', 'cold front', and 'squally wind'. These terms are used interchangeably to describe weather events that bring a sudden shift in wind direction, drop in temperature and increased rainfall. While 'southerly buster' remains the most common term used in Australia, other countries often use different terms depending on the regional terminology.