« Back to Glossary IndexThe sound caused by a lightning stroke as it heats the air and causes it to rapidly expand.Related Articles:Glossary: Severe ThunderstormWeakening storms - I didn't hear thunder myself.Beautiful Supercell Mulgoa, Western Sydney 15th January 2022Re: VIC/NSW Rain, Floods and Storms 29 Oct - 2 Nov 2010Giant Hailstones hammer Putty Road region 10th December 2014« Back to Glossary Index