« Back to Glossary IndexThe sound caused by a lightning stroke as it heats the air and causes it to rapidly expand.Related Articles:Storms N NSW 19th December 2012NSW/QLD Storms 4 - 7 Dec 2009Heavy rain / Storms and Flooding continues - Western Sydney - 7 - 8 March 2022Glossary: StormStorms, snow event and snow chase Oberon Plateau 11 - 12 July 2015« Back to Glossary Index