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Australia BOM forecasts flooding, hail and damaging winds as La Niña-fuelled wild weather descends on east coast

07:50  21 october  2020
07:50  21 october  2020 Source:   abc.net.au

BOM's severe weather outlook signals wet summer ahead, with flooding and more cyclones likely

  BOM's severe weather outlook signals wet summer ahead, with flooding and more cyclones likely Expect a mixed but generally wet bag this summer in terms of weather, delivering a big change from last year.In the fortnight since La Niña was announced, there has been widespread rain and it looks like flooding is something we are going to have to get used to, according to the BOM's October to April outlook.

Flash flooding , damaging winds and hail are all on the cards, so now is the time to take care of the gutter clearing and yard tidying that you've been putting off. According to Bureau of Meteorology forecaster Jonathan How, we could see rainfall over all states and territories over the next few days

BOM says the chances of a La Nina forming in the coming months is three times more likely than Bureau of Meteorology ( BOM ) climatologist Naomi Benger said La Nina could mean a few different Many will remember that summer for widespread flooding along the east coast , including the worst

a group of clouds in the sky: Attention people on the east coast — storm season is here. (ABC News: Elizabeth Pickering) © Provided by ABC NEWS Attention people on the east coast — storm season is here. (ABC News: Elizabeth Pickering)

The first thunderstorm event of the season is set to descend on the east coast in the coming days.

The La Niña is making its presence felt with moisture streaming in from the Coral Sea — as that moisture collides with instability over central Australia, it is forecast to trigger widespread thunderstorms over the eastern half of the continent late this week.

Flash flooding, damaging winds and hail are all on the cards, so now is the time to take care of the gutter clearing and yard tidying that you've been putting off.

Australia's east coast braces for a 'thunderstorm outbreak'

  Australia's east coast braces for a 'thunderstorm outbreak' The weather bureau dubbed it the 'multi-state thunderstorm outbreak' which is set to hit Queensland, New South Wales, north-east Victoria, as well as South Australia's mid-north.The weather bureau dubbed it the 'multi-state thunderstorm outbreak' which is set to hit Queensland, New South Wales, north-east Victoria, as well as South Australia's mid-north.

Australia weather : La Niña to bring heavy rain and strong winds to south- eastern states. The weather event reduces the bushfire risk this season but increases the chance of flooding , the Bureau of Meteorology Wintry weather set to bring snow, hail and thunderstorms to Australia's south- east .

Snow, hail and storms are on the forecast as a front drops temperatures up to 12 degrees below average for this time of year — the rest of the country This cold snap is unusual but spring weather is traditionally variable. Other parts of the country remain warm, with the south- east tipped to heat up

According to Bureau of Meteorology forecaster Jonathan How, we could see rainfall over all states and territories over the next few days, but the focus is going to be on Queensland and northern New South Wales.

On Wednesday, southern inland Queensland and northern New South Wales should expect showers and potentially severe thunderstorms.

But Thursday is when things are expected to really ramp up, when a low pressure system currently over Western Australia moves east, firing up storms across parts of South Australia and the Northern Territory.

Friday is looking like it will be the biggest day.

"We're going to see very widespread thunderstorms all the way from the Top End down through western Queensland, eastern South Australia, western New South Wales, into Victoria as well," Mr How said.

Severe thunderstorms to lash east coast

  Severe thunderstorms to lash east coast Here is the weather forecast for Australia, on Saturday, October 24, 2020, including severe storms for parts of NSW, Queensland and the NT. While Perth is set for its warmest weekend since March.The weather systems will also bring showers to Victoria and Tasmania.

Provides winter weather forecasts and the winter weather outlook for your area. Interactions with land have caused Lekima's wind intensity to decrease, with the storm now being classified as a severe tropical storm. Lekima will drift northward through eastern China, near the coasts of the Yellow Sea.

Heavy rain, destructive winds and hail are set to pummel much of the eastern seaboard in the coming days, with the Bureau of Meteorology issuing There is also a chance of extreme conditions in South Australia's south- east as well as eastern New South Wales, and up along the coast of Queensland.

Things are expected to contract by Saturday, but wild weather is still expected around north-east Victoria, eastern New South Wales and, importantly for the footy, eastern Queensland.

What about the grand finals?

Brisbane has a chance of a shower, most likely in the afternoon and evening, on AFL grand final day.

There is a chance of a thunderstorm in the evening, and the humidity is still expected to be up during the game, but the BOM currently believes any storms are looking more likely to arrive inland.

"Definitely conditions that you don't normally see in a grand final in Melbourne," Mr How said.

Meanwhile, following a possible storm on Saturday, Sydney on Sunday for NRL grand final day is forecast to be cloudy with showers and the chance of a thunderstorm during the morning.

How much rain?

Widespread falls of 30 to 50 millimetres are expected across eastern Queensland, eastern New South Wales and northern Victoria.

NSW coast to be lashed by rain over next seven days due to low-pressure system

  NSW coast to be lashed by rain over next seven days due to low-pressure system The east coast of NSW is expected to be lashed by consistent rain for the next seven days as a low-pressure system forms off the state's coastline.In Sydney, footy fans have been soaked while watching the NRLW grand final, with no let-up all evening.

Australia's east coast has been enduring flash floods and wild weather . The storms have culminated in footage of a drenched kangaroo covered in hail . There's no end in sight either, with the Bureau of Meteorology issuing severe weather warnings for Central Queensland on Saturday afternoon.

Hail and more chily temperatures are also expected for eastern states for the next few days, as wintry conditions show no sign of letting up. There is also a severe weather warning in place for Tasmania as 100km/h winds are expected to slam its north coast Tuesday afternoon and into Wednesday.

With the hit-and-miss nature of thunderstorms, the biggest uncertainty at the moment is who will get hit with the most intense rainfall.

"We could see three- to four-day totals for about 100 to 150mm; the tricky part is actually picking where that is going to be," Mr How said.

But he said places in eastern New South Wales and eastern Queensland could see those big totals.

Despite the low forming in the west, Western Australia is missing out on this patch of rain and storms — there is a medium chance of a shower on Monday as the next batch of weather rolls through.

Severe storm trifecta

For those regions that have had plenty of rain this year, more falls could cause trouble.

"There is concern that some catchments are really quite saturated, particularly across northern Victoria, and so we could see some river rises," Mr How said.

Flash flooding, severe winds and hail are also on the cards.

Mr How said conditions were good for large hail, with possible hail Wednesday for inland Queensland and New South Wales, but Friday and Saturday were going to have the most instability in which the large hail could grow.

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

  BOM says wet, wild weather set to continue on the east coast There's no let-up on the horizon for Australia's east, with dangerous conditions set to continue after days of flash flooding, damaging hail and blackouts. WA, meanwhile, is set to swelter later in the week.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.

Flash flood watches are issued from Wisconsin all the way down to the Gulf Coast . As the storm moves east Monday afternoon and evening, severe weather will break out in Mid-Mississippi Valley from The biggest threat will be damaging winds and hail , but an isolated tornado can’t be ruled out.

Australia's east coast is in store for more wild weather as a tropical cyclone edges closer. Residents in Queensland and NSW are still recovering from severe storms that have been battering the east coast over the past week and Tropical Cyclone Uesi is set to wreak more havoc on affected regions.

"We could potentially see some giant hail around and damaging winds is also a risk.

"So we have the severe storm trifecta over the coming days."

Relief for south-east Queensland

While the southern states have been getting some relief after the big dry, despite much optimism and speculation around what the La Niña might bring, south-east Queensland has largely missed out — so far.

"This is looking like the best chance of rainfall, even east of the divide, so places around Brisbane, the Gold Coast and the Sunshine Coast who haven't seen much rainfall," Mr How said.

The current forecast for Brisbane suggests Friday and Saturday will be partly cloudy, with a medium chance of showers for the city from Sunday.

"There is a good chance of seeing rain over the next few days, but, again, it's thunderstorms, it's hit and miss, but fingers crossed for some good rain for those who really need it around there."

Keep up to date with warnings this season on the ABC Emergency website, Facebook or radio and please heed the advice of your local emergency services.


Video: Coronavirus: Alerts spreading from Sydney to South Coast (9News.com.au)

Sydney is hammered by a rain bomb after wild storms in Queensland .
Emergency services are urging people to avoid floodwaters as parts of NSW brace for wild weather including thunderstorms, heavy rain and strong winds. The wild conditions come after south-east Queensland was battered by severe thunderstorms, which caused tennis ball-sized hailstones.

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