In the Northern Territory's Top End, lightning appears like clockwork during the wet season, attracting storm chasers and meteorologists from all over the globe. So, what goes into a tropical thunderstorm — and why are they so dramatic?
Deep in Kakadu National Park, about three hour's drive from Darwin, there's an ancient art gallery. The rock paintings depict the creation stories of the original inhabitants of the park, Bininj and Mungguy people, and some are believed to be up to 20,000 years old.Among the illustrations is a figure surrounded by a ring of electricity and axes protruding from the head, knees and elbows.
As evidenced by Namarrgon, the Top End has been a hotspot for this phenomenon for thousands of years. The final element is "lift", or a trigger that pushes that warm air upwards to a point where it becomes unstable. "Something as weak as a sea breeze can actually create enough of a little bit of push to grab that air to a level where it will start to rise by itself."
This explains not only why lightning storms are so frequent during the wet season, but also why when they hit, they're so powerful. But in recent decades, things have changed. He says the main hotspots are now all within a sort of "rural belt", about 40 kilometres outside of the city.The location of lightning hotspots across Darwin has changed.
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