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Thunderstorms loom in SA as Omega weather patterns wreak havoc

There’s a possibility of an upper-level cut-off low passing over South Australia, potentially causing heavy rain, severe thunderstorms, and damaging winds this weekend or early next week.

South Australia is set to experience a diverse range of severe weather conditions as a unique weather pattern unfolds across the region. It’s not great news for avid carollers, who will be attending the state’s Carols By Candlelight over the weekend.

There’s a possibility of an upper-level cut-off low passing over South Australia, potentially causing heavy rain, severe thunderstorms, and damaging winds this weekend or early next week.

The pattern involves two omega blocks, a tropical cyclone, and a heatwave, creating a dynamic mix of weather events.

The term ‘omega block’ refers to a weather pattern characterized by high pressure flanked by two areas of low pressure, resembling the Greek letter omega Ω. These blocks often result in severe weather by slowing or halting the movement of weather systems.

This week, two omega blocks near Australia and the South Pacific are expected to influence weather patterns significantly.

The upper-level high pressure system over eastern Australia will cause an intense heatwave across large parts of the country, affecting every mainland state and territory.

In addition, the northern flank of the high will guide a tropical cyclone over the Coral Sea towards eastern Queensland early next week.

Adelaide’s Weather Forecast

Thursday, 7 December: The forecast predicts partly cloudy conditions with a high of 33°C. Southeasterly winds will prevail, reaching up to 25 km/h.

Friday, 8 December: A slight chance of showers is expected, with a high of 33°C. The area will see east to southeasterly winds turning south to southwesterly.

Saturday, 9 December: Showers are likely, with a high chance of heavy falls in northern suburbs. The maximum temperature will drop to 21°C, accompanied by southerly winds turning southeasterly in the evening.

Sunday, 10 December: Cloudy with a high chance of showers and a maximum of 20°C. Southeasterly winds will range from 25 to 40 km/h.

Monday, 11 December: Partly cloudy with a medium chance of showers and a high of 29°C. Southeasterly winds will shift to easterly during the day.

Tuesday, 12 December: The week wraps up with a medium chance of showers and a high of 26°C. Winds will shift from east to southeasterly to west to southwesterly.

For more information, stay up to date here.

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