World News – AU – Storm warning for Sydney canceled after rain Rock City

Sydney largely avoided a second day of storms, with the worst regions of instability occurring in the south of the city and in areas further up the coast.

The Bureau of Meteorology canceled its warning of noxious winds, large hailstones and heavy rainfall for Sydney late Tuesday afternoon, but risks remain for a large region in northeast NSW.

Severe thunderstorms can cause harmful winds, large hailstones and heavy rainfall, which can lead to flash floods in the warning area in the next few hours, « said the Bureau. Locations that may be affected include Grafton, Coffs Harbor, Armidale, Tamworth, Moree and Narrabri.

Hail the size of 10-cent pieces is already falling in some places along the central north coast.

Helen Reid, a service forecaster in the office, earlier said, « The recipe is here. We just have to watch it boil away. « 

So far, however, rain has been limited to areas in western Sydney such as near Warragamba and in the south such as Stanwell Park.

Due to the humid conditions and the lack of warm air at higher altitudes, vertical movements can start and thunderclouds arise.

Tom Hough, weatherzone meteorologist, said Tuesday’s storms over Sydney are unlikely to be as severe as they were on Monday.

« There is certainly a lot of instability, » said Hough. « When [thunderstorms] show up, there is certainly potential for hailstones. « 

Last year was Sydney’s wettest year since 1998, and 2021 is already off to a damp start with some rain every day. However, conditions should dry up by the beginning of the weekend.

In the longer term, the conditions for increased rain probabilities in Eastern Australia begin to ease.

The praesidium’s 14-day update predicts that the La Nina pattern over the Pacific is likely to have peaked, although its influence will continue into the summer as well.

« [I] Impacts associated with La Nina, such as above-average rainfall, are expected to continue into the summer months of eastern and northern Australia, with climate prospects indicating that above-average rainfall is particularly likely in the eastern third of the country, » said it.

« The model outlook suggests that La Nina strength is likely to weaken in the coming weeks, with conditions likely to return to neutral in late southern summer or early fall. « 

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Thunderstorm, Bureau of Meteorology, warning of severe thunderstorms, Sydney, hail