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BOM says wet, wild weather set to continue on the east coast

By Kate Doyle, Tuesday October 27, 2020 - 07:52 EDT
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After a wild weekend, the east and north coasts are bracing for more storms in the coming days. - ABC

We had some pretty wild weather across eastern parts of Australia over the weekend and it is set to continue.

Moisture streaming in from the north collided with instability from the west to form cold fronts that stretched right across the eastern seaboard over the last few days.

and , the rain resulted in , and hail .

Even southern regions received tropical totals over the weekend.

But it's not just been the three day totals that have been high — also remarkable is the rate at which the rain fell.

According to Bureau of Meteorology forecaster Jonathan How, Wallis Lake, north of Newcastle, recorded 124.5 millimetres between 1:00pm and 2:00pm on Monday, while nearby Williamtown had 48.4mm in the hour to 8:00am.

What's next for the east coast?

from Mackay all the way down to the southern border.

"Locations that could see severe thunderstorms include places like Townsville, Mackay, Rockhampton, Bundaberg, and then down towards Brisbane and the Gold Coast as well," Mr How said.

Damaging to destructive wind gusts, large to giant hail (in excess of five centimetres) and heavy falls leading to flash flooding are all on the cards.

On the NSW side of the border storms are not expected to be as quite as severe on Tuesday, but Wednesday might tell a different story, with severe thunderstorms expected across parts of the north-east.

Places like Byron Bay, Coffs Harbor and the Northern Tablelands could all be see dangerous conditions on Wednesday, while eastern Queensland will remain at risk.

"The threat isn't over just yet," Mr How said.

"We could see some pretty nasty weather and pretty high impact weather over the coming days."

No clear horizon

By Thursday storms could extend all the way into Victoria, but there is still a fair degree of uncertainty this far out.

At this stage another low looks set to form over South Australia on Thursday.

"It's looking like we could see another low pressure system forming over NSW, similar to what we saw in the weekend," Mr How said.

"That could bring some rain for Victoria and southern parts of NSW."

Eastern Victoria is expected to see showers in the coming days.

With catchments already sodden, flash flooding and tree falls are a real risk.

More storms are also expected across the tropical north.

What about everywhere else?

The temperature is set to rise in the west from the middle of the week as hot air streams down from the interior.

"By Friday Perth is set to hit 36 degrees," Mr How said.

"We will see temperatures right across south-west parts of WA getting 10 to 16 degrees above average."

For once Tasmania has enviable weather — it's sitting pretty under a high pressure system with just a few coastal showers in the east.

There is a chance, however, that the next system could move over and rain on the Apple Isle's parade on the weekend.

When will it end?

Not anytime soon.

"It is peak thunderstorm season for parts of Queensland and NSW," Mr How said..

"We are in a very classic springtime pattern right now, with storms along the east coast most days."

There could be a break early next week when a high pressure system moves across, but the storms will return thereafter.

With La Niña in the mix it is looking even wetter than usual — so if ever there was a time to prepare that storm plan and emergency kit, this is it.

Keep up to date with warnings this season on the or and remember to heed the advice of your local emergency services.


© ABC 2020

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