Heavy rain and floods Eastern New South Wales June 5 2016

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The eastern seaboard of New South Wales has been swamped with heavy rain and a number of streams and rivers have flooded. This event is exceptional because of its widespread nature and size of the rain band and the impact that it is having along the coast.

Trees have been brought down, flooding is occurring around Sydney and elsewhere including Coffs Harbour, Lismore and Tweed Heads.

Rainfall totals have topped a staggering 468 mm at Wooli River followed by 398 mm at Bennetts Road (Coffs Harbour) to 9 am 5/6/2016. Other significant rainfall totals include:-

Bellingen 365 mm.
Carinda River 345 mm.
Gundagai Street (Coffs Harbour) 341 mm.
Tweed Heads 330 mm.
Robertson (Illawarra) 285 mm.
Burringbar 262 mm.
Mount Darrough (South Coast NSW) 162 mm.

For the 24 hours to 9 am 5/6/2016, a large area of Sydney received in excess or more than 100 mm of rain and coupled with strong winds, numerous issues, road closures and power outages have occurred.

At daybreak and again at 11 am, I had the the opportunity to locate flooded roads around Pitt Town in outer north west Sydney and soon found flooding across Old Pitt Town Road and other low lying areas. Numerous photos were taken of the flooding within the district. This shows that the event has affected all of Sydney in one way or another.

This system is moving south and a clearing trend is taking place but ahead of that, further heavy rain has occurred. In Sydney to 3 pm 115 mm has fallen at Ingleburn, followed by 106 mm at Parramatta and 101 mm at Turramurra.

At Blacktown where I reside, 89 mm fell to 9 am Sunday followed by another 60 mm to 3 pm (Combined total of 149 mm). At Parramatta 164 mm fell to 9 am Sunday (Combined total of 270 mm). It is these figures that makes the event significant.

The system will slowly move south over coming hours taking the heavy rain with it allowing for a clean up to commence.

Heavy Rain and Local Flooding Coastal NSW and SE QLD June 4 2016

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For the 24 hours to 9 am 4/6/2016, heavy rain has been a feature within certain areas of the coastline south from South East Queensland to the Victorian border.

As a result, there is now the threat of river flooding within some rivers and moderate flooding is occurring along the lower reaches of the Tweed River within the Tweed Valley.

Rainfall within the Tweed Valley has approached 200 mm with the highest figures being:-

Couchy Creek 186 mm.
Brays Creek 185 mm.
Upper Rouse River 178 mm.

Brisbane City

For the 24 hours to 9 am, much of the northern outer areas of the city had in excess of 100 mm of rain.

In Brisbane, following an overnight fall of 48.6 mm to 9 am, a burst of heavy rain during the morning saw 38 mm fall within 30 minutes between 9.30 am and 10 am. Up to 96 mm of rain has since fallen in the city centre between 9 am and 9 pm Saturday with 109 mm falling at Apsley Reservoir.

For the 24 hours to 9 am, heavy rainfall has affected the Gold Coast region with as much as 267 mm falling at Mt Tamborine and 236 mm falling at nearby Upper Springbrook Alert.

Areas of the Sunshine Coast have also received major rainfall including 166 mm at West Woombye Alert and 180 mm at Old Gympie Road.

Sydney

In Sydney, coastal areas of the city received falls as high as 85 mm (Audley Weir) and 80 mm (Manly). High rainfall was limited to eastern areas and light falls fell across the western suburbs.

Rainfall 9 am to 9 pm Saturday.

The Tweed River region has been affected by further heavy rain including 219 mm at Barneys Point and 264 mm at Banora Sewerage Treatment Plant.

Further south, there appear to be issues around Coffs Harbour following 200 mm falls around the western areas of town including 275 mm at Bennetts Road, 264 mm at Newports Creek and 259 mm at Bakers Road. There is presently minor flooding occurring along Coffs Creek and at Urunga.

Moderate and heavy rain is now impacting the New South Wales South Coast where numerous centres have received between 50 and 95 mm for the 12 hour period between 9 am and 9 pm Saturday.

A number of rainfall plots and are provided from the Bureau of Meteorology and Weatherzone showing the excessive rainfall across coastal regions of New South Wales and Queensland for the period.

Heavy rain, gales and potential for flooding QLD / NSW / VIC – June 4 to 6 2016

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Weather synoptic charts and weather forecasts indicate a significant weather event to unfold across south east Queensland, Eastern New South Wales and Eastern Victoria over the next three days.

During Friday night and Saturday, an inland low pressure cell is expected to intensify as it tracks east across New South Wales then cross the coast with a substantial cloud mass.

It appears that a number of small low pressure cells will form as the system forms and reforms along the New South Wales east coast over coming days and it appears that the weather system will move southwards as the weekend progresses.

Weather models suggest that South East Queensland, eastern New South Wales and Eastern Victoria will be most affected by periods of heavy rain and strong winds. Heavy rain is expected to spread into South East Queensland and much of coastal New South Wales with some moderate falls for the eastern inland parts of the state.

The Water and the Land rainfall plot “Bureau of Meteorology” is suggesting the heaviest falls to occur in South East Queensland where as much as 150 to 200 mm of rain may fall. The same model is suggesting as much as 200 to 300 mm to occur along the New South Wales South Coast within an area south of Nowra to the Victorian State Border. The same model suggests 100 to 150 mm to occur in many other coastal areas and at least 50 mm across a swath of eastern inland New South Wales.

The rainfall model from Weatherzone is suggesting at least 150 to 180 mm for coastal South East Queensland and parts of the New South Wales North Coast including the Coffs Harbour region. The same model is suggesting rainfall of up to 300 mm for a region just south of Batemans Bay while falls of at least 60 mm is suggested for a swathe of inland New South Wales covering the sheep / wheat belt.

This is certainly an interesting weather event as flood watches and warnings have been issued along many coastal rivers and creeks such as the Tweed River, Wilsons River, Clarence River, Hastings River and the Nepean / Hawkesbury River systems.

Wind warnings for wind gusts to 90 km/h are forecast for Saturday and Sunday for much of the east coast. Other issues to contend with are high tides, beach erosion and significant surf that may lead to localised damage.

Late Friday, the system is already forming across inland New South Wales with 26 mm falling at Coonamble up until 9 pm 3/6/16. Up until 9 pm 3/6/16, the Tweed region of New South Wales has received 25 to 38 mm of rain and falls have already reached 55 mm across portions of the Gold Coast region.

Additionally falls of 77 to 79 mm have occurred near Blackall in Queensland from the event.

The system will continue to develop over coming hours where much heavier falls are expected to occur.

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