My absolute favourite subject matter for photography is clouds — so here’s a warning in advance: you’ll see lots of clouds on this blog. This particular beauty rolled in with a ‘southerly buster’. The southerly usually signals a cool change and is common in Sydney in the summer, particularly after days of stable, sunny weather. A cool front gets pushed up from the south, bringing unstable, gusty weather. Big grey clouds roll in and the temperature drops rapidly. They usually come in the late afternoon and you can almost set your watch by it. All of a sudden our back windows start rattling — ah, that’ll be the southerly buster. Some Sydney weather nerds (myself included) often tweet when the southerly hits – you could map it’s progress from south to north across the city.