Strange Antarctic event to shake up Australian spring.

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Spring weather across Australia is about to get interesting, thanks to some unusual activity happening over Antarctica.

Meteorologists are keeping a close eye on what’s known as Sudden Stratospheric Warming (SSW) — a rare event where the air in the lower stratosphere above Antarctica suddenly heats up. This warming has the potential to mess with the polar vortex, the giant low-pressure system that usually keeps icy air swirling neatly around the poles during winter.

Normally, the polar vortex weakens in spring as we move toward warmer months. But with this sudden warming in the atmosphere, the vortex could become unstable and start shifting around. If that happens, Australia’s spring weather could be in for a shake-up.

From late September into early October, cooler Antarctic air might be dragged northward by the polar jet stream. That could mean more rain and strong westerly winds for places like Tasmania, Victoria, South Australia, and Western Australia. On the flip side, eastern states could be looking at drier-than-usual conditions, while southern regions may see some days that are unexpectedly hot for this time of year.

And it doesn’t stop there. The SSW could also interfere with other weather drivers, like the negative Indian Ocean Dipole, which was expected to bring spring rainfall to parts of the country. If the polar vortex really shifts, that rain might not arrive as planned.

In short, Australia’s spring forecast is looking anything but straightforward — with the atmosphere over Antarctica playing a big role in what’s to come.

Stay tuned with Aus News Lanka – the leading platform for news for Australians.