Australian Weather Calendar: July 2018

July photograph by Ben Broady

Ben Broady rates the Bureau's rain radar as a crucial tool for tracking storms. When it showed a thunderstorm developing southeast of his home in Kununurra, Western Australia, Ben drove to the lookout at Lake Argyle reservoir. He'd only been there five minutes when he caught a spectacular lightning strike.

Lightning occurs when the negative electrical charge that builds up in the lower part of a cloud and the positive charge in the upper part of the cloud become so great that they overcome the natural resistance of air and a discharge between negative and positive takes place. This discharge can occur within the cloud, between clouds, or between clouds and the ground.

Diagram