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Photo mainly of storms and weather

Major rain event, storms and floods Eastern Australia – 24 to 26 November 2021

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A number of rivers across inland New South Wales are in flood following 3 days of rain, storms and heavy downpours. At the time of writing late Friday, the following rivers or areas of New South Wales are experiencing some degree of flooding:-

1 - Breeza Station - (NW Slopes and plains) - Major flooding.

2 - Kingdon Ponds at Scone - (Upper Hunter) - Major flooding.

3 - Musslebrook - (Hunter River) - Moderate flooding.

4 - Wee Waa region - (NW NSW) - Major flooding.

5 - Gunnedah - (Namoi River) - Moderate flooding.

6 - Tamworth Road Bridge - Peel River - Moderate flooding.

7 - Mendoran - Castlereagh River - Moderate flooding.

8 - Goondawindi - Near Queensland border - Moderate flooding.

9 - Molong - Molong Creek - Major flooding.

10 - Jemalong Weir - West of Forbes - Major flooding.

11 - Wellington (Bell River) - Moderate flooding.

12 - Boggabri - Namoi River - Minor flooding.

There are other rivers of concern including Darlington Point (Minor flooding) and at Jingellic (Above Lake Hume) - Minor flooding.

Three days of rain, much of it heavy falls have affected large swathes of eastern New South Wales / Victoria / Queensland and even the Australian Capital Territory.

The result has been a very wet November with rainfall being well above average. This is also being accompanied with cooler than average daytime temperatures as thick cloud cover has been persistent.

 

For example, it has not reached 30C once this month in Blacktown where I reside, with the highest daytime temperature being just 29.4C being recorded on the 19/11/21. So far, it has rained on 13 out of 25 days this month where I live with thunder being audible on 4 of those days.

Some of the rainfall has been significant as follows:-

1 - For the 24 hours to 9 am 23/11/2021.

Eastern Queensland - Widespread falls of 100 mm plus impacts large areas north of the Sunshine Coast including:-

Pacific Haven - 113 mm.

Leesons - 110 mm.

Childers South - 109 mm.

Miami - 105 mm.

Eastern New South Wales

Dorrigo - 140 mm.

Delward - 137 mm.

Bellingen - 100 mm.

Such rainfall has caused waterfalls on the Dorrigo Road to flood across the road linking Dorrido with Bellingen.

2 - For the 24 hours to 9 am 24/11/2021

Parts of North Eastern Victoria is drenched with falls of 26 to 43 mm occurring including the area around Bright and Myrtleford.

Upper Buckland receives the heaviest total of 48 mm.

Across the border in New South Wales, a very isolated fall of 60 mm occurs at Portable.

3 - For the 24 hours to 9 am 25/11/2021

Narrandera in the Riverina region receives 72 mm including 61 mm in 9 hours. Such a fall is rare given the location and climate.

Barellan receives

59 mm and Yanco receives 53 mm.

Jingellic receives 67 mm and Tumbarumba receives 58 mm.

Evening rain and embedded thunderstorms result in an isolated heavy total of 96 mm at Warragamba Dam in Sydney’s outer west. Sporadic lightning is also observed to the west during the evening

4 - For the 24 hours to 9 am 26/11/2021

Rainfall is widespread with some of the heaviest totals being:-

Mount Palmer - 117 mm.

Kars Springs - 115 mm.

Blackville - 111 mm.

Bundella - 106 mm.

Boomera Creek - 104 mm.

All locations are within a small area of the Upper Hunter and lower North West Slopes and Plains.

Kapooka (Just to the south west of Wagga Wagga) - 71 mm.

Following a humid and cloudy day Thursday, heavy rain moved into Sydney. A heavy downpour occurred at Blacktown and as it passed over, rumbles of thunder began to be heard. I managed to take photos of the cloud tower and its base only after it had cleared to the east. The thunderstorm was embedded within low cloud making it hard to identify. As the low cloud broke apart, the cloud base and parts of the updraft tower became more visible allowing me to obtain a few photos in very difficult conditions.

Much of Sydney was impacted by between 25 and 48 mm with much of this falling from that Thursday afternoon event especially around Blacktown - Seven Hills and the Parramatta region.

Cumulative rainfall totals have been significant with large regions of the state impacted by falls of greater than 50 mm with some areas north of the Hunter Valley being impacted by upwards of 200 mm.

While the worst of the wet weather has passed for the immediate period, further shower activity is expected over coming days.

Attached to this post are:-

1 - Himawari satellite images showing cloud cover impacting eastern Australia.

2 - The BOM radar image of the thunderstorm cell that impacted much of Western Sydney Thursday afternoon.

3 - Cumulative rainfall for the seven day period to 9 am 26/11/2021 for New South Wales.

4 - An image showing typical rain falling.

5 - Three images of the storm cell taken in difficult conditions with just enough time available during a break in the low cloud cover.

6 - Sydney rainfall for 26/11/2021 showing the spread of rain across the city.

Significant rain falls – NSW, NT, QLD and VIC – 10 to 12 November 2021

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Another major rain event has impacted large areas of Australia during the period 10 to 12 November 2021. Rainfall accumulations have been significant in several areas and the area impacted is significant.

The most recent event appears to have been even more widespread and flooding has occurred in some areas. The rain episode commenced on the 3 and 4 November and has continued since with only intermittent spells of clear weather in between.

Northern Territory

During the most recent rain episode, heavy rainfall impacted the Alice Springs area with Alice Springs Airport receiving 100 mm for the 24 hours till 9 am 11 November 2021. In particular, the Alice Springs area of Southern Northern Territory experienced between 66 and 100 mm of rain which was enough to allow water to flow within the Todd River.

New South Wales

For the 24 hours to 9 am 11 November, the following totals were recorded within New South Wales:-

Delungra - 94 mm

Narribri - 76 mm.

Wallangara - 65 mm

The Central West town of Molong received 59 mm being amongst the highest falls for the day.

During the same period, 9 to 36 mm fell across Sydney with the heaviest fall being 36 mm at Belrose on Sydney’s North Shore.

It is noted that while such rainfall was occurring across the east and north of the state, the far south west of New South Wales remained untouched.

Weekly Rainfall - Australia

For the week ending on the 11/11/2021, a vast area of Australia had received at least 25 to 50 mm with large areas of eastern New South Wales having received at least 50 to 100 mm from the event being accumulative totals. In addition to what has occurred across eastern New South Wales and Queensland, the area around and just to the west of Alice Springs had received upwards of 150 mm.

Extensive cloud cover including the presence of thunderstorm cells have helped to boost daily totals. The Himawari satellite pictures of Wednesday afternoon shows extensive cloud cover and thunderstorm cells especially around the Alice Springs area that has contributed to such high rainfall totals.

Friday rainfall totals

Thursday evening and Friday morning,heavier rainfall again featured across much of New South Wales with the highest totals for the 24 hours to 9 am 12/11/2021 being:-

Bunnan (Milparen) - 99 mm.

Mount Palmer - 95 mm.

Rock Forest (North of Bathurst) - 92 mm.

Orange STP - 74 mm.

Bowmans Creek - 73 mm.

Falls over 50 mm were common across the Hunter Valley and the city of Newcastle received between 60 and 88 mm. Falls of 50 mm or greater also featured around Bathurst and Orange in the Central Tablelands of New South Wales.

Widespread falls finally reached south west New South Wales and into North East Victoria where falls of 15 to 33 mm were common including 33 mm at Mt Buffalo and 29 mm in West Wodonga.

 

 

 

 

 

 

Widespread and heavy rainfall impacted large areas of eastern Queensland where many areas received between 100 and 150 mm including Red Hill Alert 152 mm and Blackdown 132 mm.

Even in Sydney, falls of 10 to 32 mm were common with higher totals in the west and south west. With totals accumulating, this made for a wet start to the day as shown in the attached photos. Scenes such as this have been common over the past several days interspersed with brief sunny spells. Some of the rain squalls passing overhead have had weak embedded thunderstorms within them as occasionally peels of thunder have been audible.

 

The rain has now eased across Sydney although during the afternoon a brief heavy shower passed over Blacktown which included a single minor thunderclap being audible.

Enough rain has fallen over several days to cause flooding along a number of inland rivers. At the time of writing, the following rivers were in flood:-

1 - Macquarie River at Bathurst (Moderate flooding).

2 - Belubula River at Canowindra (Moderate flooding).

3 - Cotton Weir on the Lachlan River near Forbes (Minor flooding).

4 - Booligal Weir (Minor flooding).

5 - Minor flooding of various tributaries of the Gwydir River around Moree and Wee Waa in northern New South Wales.

In Queensland, minor to moderate flooding is occurring across swathes of inland areas with the worst at Garrabarra, Dykehead Alert and Glenmore (Moderate flooding) with minor flooding elsewhere. There is also isolated moderate flooding at Diamantina Lakes in the far west of the state.

In north east Victoria, there are no rivers in flood but rain continues to fall which may change this in coming days.

It appears that further rainfall will occur over the weekend across the south but this will ease as the weekend progresses.

Significant storm events New South Wales – Thursday 14 October 2021

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During Thursday afternoon, numerous thunderstorms developed across Eastern New South Wales with a number of these becoming severe in intensity and their impacts. A few of these were reported in the media.(If you have experienced hail damage, please contact 0408020468 or go to haidents.com.au)

It is acknowledged that there were numerous storms and chasing was not possible due to COVID lockdowns however three such events do stand out for the day as follows.

1 - Armidale Northern Tablelands NSW

The local airport weather station is situated south west of town and a review of this station weather data does not identify the thunderstorm that impacted the town to the north at around 10 pm. The airport weather station only identifies 10 mm of rainfall but nothing significant.

Further north, it appears that the town was impacted by a significant thunderstorm that brought hail and media reports are showing a tornado passing through the north east portion of town at around 10 pm Thursday evening. Newspaper reports within the Armidale Express shows a trail of damage including damage to buildings at the University of New England and extensive damage to homes along a narrow path across the north east portion of town.

2 - Goulburn

A significant thunderstorm passed over much of the town dropping hail especially across the southern half of the town. The local weather station recorded 11.6 mm of rain in just 5 minutes between 1.25 pm and 1.30 pm Thursday afternoon for a total of 24 mm of rain from the single event. The rain fell  in a very short period of time. The local weather station did not experience significant wind but torrential rain and hail was a feature of this event.

Further storm and rain activity later during the day boosted the tally to 35 mm for this weather station.

3 - Western Sydney (Penrith to Parramatta)

This storm is covered in detail in a separate post but late Thursday a very significant thunderstorm that at one stage was even tornado warned passed over Western Sydney producing copious amount of hail in the 4 to 6 cm range. Generally, 4 to 5 cm hail appear to have been most common. The same storm has caused significant roof damage to Westfield Mt Druitt and I have since learnt of further damage in the area where I live being mostly trees being felled by winds and local power outages.

 

Refer to the post “Significant Thunderstorm Impacts Western Sydney with Large Hail - October 14 2021” for further details including images of hail taken and some details of rainfall. The heaviest fall from the whole event across Sydney was 35 mm around Auburn.

I do not have photos of the storms approach but do have photos that I took of later storms at sunset that developed at or just after sunset. Later that night, distant lightning was observed from storms that were out to sea to the east but too far away to be photographed.

This storm and others were part of a dynamic weather system crossing New South Wales during Thursday. Again, while there were many other storm cells and likely hail events, the three mentioned above have been gaining greater attention due to their impact on population centres of the state.

 

 

 

 

 

 

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