Australian Weather Calendar: April 2018

April photograph by Captain Victoria Harrison

Captain Victoria Harrison of the Queensland Royal Flying Doctor Service was flying to Richmond to pick up a patient and watching the convective cloud building. She then spotted a clear path that she calls 'one of the most beautiful sights' of her flying career.

Thunderstorm clouds are convective clouds that form when warm, humid air rises rapidly through the atmosphere where it cools and condenses into cloud. The air surrounding convective clouds is subsiding. As cloud doesn't usually form in subsiding air, gaps appear between convective clouds.