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Offline Colmait  
#1 Posted : Sunday, 22 September 2019 6:51:07 PM(UTC)
Colmait

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This was the big dust storm that hit Eastern Australia in 2009. My shots are from over Bracken Ridge, the 23rd September 2009

7C26C59D-0EAD-4016-9A2F-3B9840D86BDC.jpeg34D825FD-CD82-4D0B-BF11-9513F03665B5.jpegA3A69E86-9308-4137-AFBD-0AC3FC43256A.jpeg3B64131A-C9F7-4C27-9818-7999D900C396.jpeg009393F3-2F2B-40A3-A03D-2E3ED03B7D95.jpeg

Edited by user Tuesday, 24 September 2019 8:36:10 AM(UTC)  | Reason: Not specified

Colin Maitland.
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Offline DelBoy  
#2 Posted : Sunday, 22 September 2019 6:59:03 PM(UTC)
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I remember it well. Thank you for starting a thread.
I was working in Brisbane that day and at lunch time it was getting thicker and there were a few enterprising kids were being escorted out of Queen Street mall by security, because somehow they had got hold of a load of face masks and they were selling them in the Mall for $1 each. Young enterprise at its best. Cool

I got home back to Cabo and it was much thicker and I had left the doors open and the fly screens shut and there was dust all inside the house. Even the cat had red feet and there were cat foot prints all over the floor. Sadly I never took any photographs that day.

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Offline Colmait  
#3 Posted : Monday, 23 September 2019 6:34:22 AM(UTC)
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The News Report of the dust storm.



Sydney was hit harder than Brisbane. Still have to filter through BoMs report.
Colin Maitland.
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Offline Paul Atkins  
#4 Posted : Tuesday, 24 September 2019 5:02:07 AM(UTC)
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Posted be Ken in the day to day thread, but copied here....


Originally Posted by: Ken Go to Quoted Post
UserPostedImage

UserPostedImage

UserPostedImage

UserPostedImage

UserPostedImage


And who could forget the amazing MODIS imagery (above) from the 2009 dust storms.
The 1st image is where the dust was by the next day on the 24th Sep (it tainted snow cover in New Zealand) while the rest are from the 23rd Sep including a graph of Brisbane's air quality index in terms of the 24hr running average of PM10 particle (such as that in dust) concentrations.[/quote
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Offline Colmait  
#5 Posted : Tuesday, 24 September 2019 6:27:01 AM(UTC)
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This was from a post I made in 2009 on the Australian Severe weather forum. I think the post was from the 19 -27 of September. It is worth a read. It was full on right around Australia.

As at 3.27pm Tuesday 22/09/09 I counted 39 weather warnings for Australia. It is quite an eventful day. I have posted an WZ map to try and give an idea of what is happening.

There is storms, dust storms, strong winds, cold fronts, fire especially in QLD and the list goes on.

Col

An older version of storm tracker.

B3CAD749-A490-480E-9E1D-9B72F5244C69.png

Very interesting the similarities 10 years ago.
http://www.australiaseve...m/index.php?topic=5372.0
Colin Maitland.
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Offline Colmait  
#6 Posted : Tuesday, 24 September 2019 8:28:37 AM(UTC)
Colmait

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What happened to all that dust that covered the East Coast from the SEQ, NSW and Victoria. Remeber that there was also very strong wind gusts with that system. And how much dust did we approximately loose.

Another interesting point was the danger of the dust.

Here is an article that will help to answer the question.

The report by Geoff Chambers states:

The dirt shifted across NSW, north to the Gold Coast and as far afield as the southern alps in New Zealand.

CSIRO Marine and Atmospheric Research expert Dr Ross Mitchell said around 16 million tonnes of dust could have been whipped up by the dust storm.

He based that on detailed calcuations of a similar event in October 2003.

Dr Mitchell said the Birdsville weather station recorded its lowest visibility figure at the peak of the stormfront.

"The main source region is the Lake Eyre basin, where there has been quite a bit of deposition of fine material after the recent floods," said Dr Mitchell.

"That available material has been blown out. It's not uncommon to see a dust storm in that region but it is unusual to see it traverse the continent."

Monash University head of environmental science Professor Nigel Tapper said he would be interested to see whether the Heron Island weather station, run by his institution, recorded a dust level.

"It's a remarkable event, which started in the basin," said Prof Tapper.

"There were two storm fronts, one that pushed through Victoria and ended up in New Zealand, where the southern alps will be covered in dust and the other that moved east and north to the Gold Coast."

Both Dr Mitchell and Prof Tapper said climate change may have contributed to the freak weather event.

Griffith University DustWatch head Dr Craig Strong said the dust bomb had been building for 10 months on the back of floods, drought and strong winds.


Greg Roberts from News .com reads in part:

A TEAM of Australian scientists are analysing the dust that has engulfed eastern Australia this week to see whether it is dangerous.

The dust storm is believed to have originated around Woomera in outback South Australia near the massive Olympic Dam uranium mine, prompting fears it was radioactive and dangerous.

Climatologist Professor Nigel Tapper, from Melbourne's Monash University, played down the risks to humans but said the dust might threaten important eco-systems such as the Great Barrier Reef.

"Certainly the dust storm could have potentially come from those outback areas, we believe it has mainly come from dry lake and creek beds and elsewhere in the Lake Eyre basin," he said.

"That (radioactive) stuff has been spread around over a long time so I would not have thought there would be much of an issue around that.

"The main concern is over fine dust that goes right into the lungs triggering asthma and other respiratory problems."

Edited by user Tuesday, 24 September 2019 8:35:09 AM(UTC)  | Reason: Not specified

Colin Maitland.
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Offline crikey  
#7 Posted : Tuesday, 24 September 2019 8:55:24 AM(UTC)
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Great stuff Colin. Thanks for bringing those archives together.

A few points ...The current dusty weather 2019 is being compared to 2002 drought and polar vortex heat anomaly
and in 2009 that was the last year of a prolonged drought as well.

The 2000s drought in Australia, also known as the Millennium drought[1] is said by some to be the worst drought recorded since European settlement.[2]

This drought affected most of southern Australia, including its largest cities and largest agricultural region (the Murray–Darling basin). It commenced with low rainfall conditions in late 1996 and through 1997, and worsened through particularly dry years in 2001 and 2002. By 2003 it was recognised as the worst drought on record.[2]
https://en.wikipedia.org...2000s_Australian_drought

The 2010-11 flooding came after the drought .

Here is a BOM twitter showing dust storm on the alps the other day. Sept 22nd 2019


UserPostedImage

Edited by user Tuesday, 24 September 2019 8:58:28 AM(UTC)  | Reason: Not specified

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Offline snowbunny  
#8 Posted : Tuesday, 24 September 2019 1:51:15 PM(UTC)
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What an outstanding documentation of this amazing event. A good National geographic article.
Thanks
BigGrin

I will assist with adding a Wikipedia link

https://en.m.wikipedia.o...09_Australian_dust_storm

Surfers paradise on the day


dust atorm surfers paradise sept 2009
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