Severe thunderstorms are expected to produce damaging winds, heavy rain leading to flash flooding and hailstones in the warning areas across the country over the next several hours.
The Bureau of Meteorology has warned residents across Sydney, Central West and North West NSW and parts of the Hunter and Illawarra regions.
Temperatures are likely to plummet tonight by 20 °C on account of a cold front moving in from the Great Australian Bight.
Sydneysiders may expect the maximum temperatures to keep on rising over the next couple of days, reaching 37 °C in the city’s west on Tuesday.
With the combined effect of a high pressure area over the Tasman Sea and a cold front in the Bight, hot air will move in from the interior which has had a few days to heat up. This air will then be dragged further south, however the cold front will push this hot air a long way north.
Thereafter, the cold front will make an appearance in Western Victoria during the afternoon putting an end to highs of 41 °C along the Murray in Mildura and Swan Hill.
Much of the rest of the state will hover around the high 30s, with the cold weather set to make an entry into Melbourne during the evening, producing fair amounts of rainfall.
As soon as the cold front heads off towards New Zealand another will move in, keeping temperatures in the mid-teens all week along with 20-30 mm of rain on the ranges and 10-20 mm on lower ground.
Sydney city is likely to observe top of 29 °C on Monday and 31 °C on Tuesday before mercury plunges into the 20s.
Western NSW towns will record 40 °C, while mercury will settle to 31 °C in Canberra on Monday and Tuesday.
In South Australia, Adelaide will record 31 °C but temperatures are expected to see a dip of 10 degrees on Tuesday.
Mercury will settle to 23 °C on Monday in Perth, thereafter it will jump to 28 °C on Tuesday and then 36 °C during the weekend. Meanwhile, temperature will hover around 30 °C throughout the week in Brisbane.
As of now, NSW and Victoria are in the grip of consecutive weather systems as identical cold fronts move across the states.
Just like a seesaw, as the cool weather comes in, temperatures have climbed and then plummeted.
Image Credit: theguardian.com