G’day, young meteorologists! Are you feeling chilly? Well, that might be because an icy blast has settled across Australia!

But don’t worry, we’re here to explain exactly what’s going on.

Important Details

• First things first, let’s talk about what causes a polar blast. It all starts with the polar vortex, which is a swirling mass of cold air that sits high up in the atmosphere over the polar regions. Sometimes, this vortex can become weakened and start to wobble, which can cause some of that cold air to break off and head our way.
• And that’s exactly what’s happened! The polar vortex has weakened, and now we’re getting hit with a blast of cold air from the south. Brrr!
• But why does this happen? Well, it’s all about the temperature difference between the polar regions and the rest of the planet. When that difference is large, the polar vortex stays strong and keeps all that cold air locked up in the north. But when the difference decreases, the vortex can start to wobble, and we end up with a polar blast.
• Now, you might be thinking, “Well, why can’t we just turn up the heat?” Unfortunately, it’s not that simple. Heating up the entire planet to combat a polar blast would be a pretty big job, and not one that we’re capable of just yet.
• But there are things we can do to stay warm and safe during a polar blast. Wearing warm clothes, staying indoors as much as possible, and making sure to keep our homes properly insulated are all important steps we can take.
• So, don’t let the cold get you down, young meteorologists! Keep exploring the amazing and sometimes chilly world of weather, and who knows? Maybe one day you’ll discover the secret to heating up the planet!

Watch a video

Snow in Burra NSW Australia. pic.twitter.com/TJIRI1mOIG

— Sam Spurrett (@SamSpurrett) May 7, 2023

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