An impending “supercell” storm could have dire effects if it sweeps through Australia’s east, bringing with it thunder, rain and “huge” hail.
Flash floods, thunder and “huge” hail will devastate Eastern Australia when the storm season returns with a vengeance.
The first major storm of the season increased in strength Tuesday afternoon as it swept through southeastern South Australia and Victoria.
It is expected to unleash its full potential on Wednesday as it intensifies over NSW and Queensland.
“Severe thunderstorm warnings are expected, with flash floods being a particular risk,” said Miriam Bradbury of the Bureau of Meteorology.
“The strongest falls are expected on the western slopes of the Great Dividing Range, with the greatest risk of storms in these areas.”
Motorists were warned that flash floods could make the roads dangerous and there was also a risk that high winds could cause power lines to collapse.
Next Thursday, even Tasmania will be hit by the storm, and the rain clouds moving east could fall up to 10 centimeters in the east of the island state.
Queensland, NSW and Victoria could all get more than 60 millimeters of rain.
The storm was likely to have been unpredictable and people were encouraged to keep checking the BoM website for updated information on the places where it was raining the heaviest.
BoM meteorologist Christopher Arvier said the worst days for Victoria are Wednesday and Thursday, with widespread rain and thunderstorm areas.
He said Tuesday would be a wet night and it was possible that severe thunderstorm and flash flood warnings would be issued in Victoria on Wednesday.
“There is sure to be a change across the state and we advise people not to get too used to the beautiful weather we are experiencing,” said Arvier.
“The system is approaching from the west and on Tuesday we will experience a fairly warm day with increasing cloud cover for a large part of the state, with showers and thunderstorm potential in the afternoon and evening.
“The strongest falls and the risk of thunderstorms will not occur until Wednesday and Thursday.”
Mr Arvier said there would be widespread falls of 15mm to 30mm for most of Victoria on Wednesday, with heavier totals of 30mm to 50mm in the north and northeast.
He said that there would be occasional heavier falls of up to 70 mm during thunderstorms.
Sky News meteorologist Rob Sharpe said harmful winds, heavy rain and large hail from thunderstorms were also predicted on Wednesday over western parts of NSW and in the southwestern interior of Queensland.
By Friday, he said that the system would develop with “huge hail” and “supercell thunderstorm” on the way to southeast Queensland and far northeast of NSW.
“It looks particularly gross that day,” he said.
“On Friday the system will continue its migration further south and east, heavy rains in Tasmania, showers and storms in the east (Australia), particularly in the southeast of Queensland and in the far northeast of NSW, where we’re likely not just large hail, but some giants will see hail and some supercell thunderstorms. “
Mr Sharpe said the biggest storms would be mostly over the inland area, but South Australia would be missed.
In a vast area from Tasmania to southern Queensland, rainfall will be widespread, ranging from 25mm to 50mm.