Source: Bureau of Meteorology

Issued at 5:51 am Sunday, 9 August 2020.


A trough along the New South Wales coast is deepening with multiple low centres developing within the trough. This system is currently bringing widespread rain to the southern half of the coast, and is set to bring increased winds and surf along the coast as well this afternoon as the low centres make landfall.

HEAVY RAINFALL, which is leading to RIVERINE FLOODING, is forecast to continue for the Illawarra, northern half of the South Coast, and eastern parts of the Snowy Mountains and Southern Tablelands districts today. The areas of heavy falls may extend to the Sydney Metropolitan area and the Central Coast later this afternoon depending on the position and the movement of the lows. Thunderstorms embedded in the rain or any development of a small scale lows within the trough may exacerbate the rain rate leading to FLASH FLOODING. The rain should ease around this evening as the trough starts to move northwards later tonight or early Monday.

Moderate to Major Flood Warnings are current for some of the South Coast river catchments. See for more information.

DAMAGING WINDS, averaging 60 to 70 km/h with gusts in excess of 90 km/h, are likely to develop on the coastal fringe of Illawarra and the South Coast this afternoon, before extending to the coastal fringe of the Sydney Metropolitan area and parts of the Central Coast during the late afternoon or early evening.

VERY HEAVY SURF which may lead to localised damage and coastal erosion is also possible in association with the strengthening winds along the coastal parts of Illawarra and the South Coast from late Sunday. Beach conditions in these areas could be dangerous and people should stay well away from the surf and surf exposed areas.

As the system moves northwards, the areas of damaging winds and heavy surf will shift to the northern and central parts of the coast north of point perpendicular from early Monday.

Locations which may be affected on SUNDAY include Sydney, Wollongong, Nowra, Batemans Bay, Braidwood, and Moruya. Locations which may be affected on Monday includes Sydney, Wollongong, Newcastle, and Port Macquarie.

Rainfall totals for the 24 hours to 9am Saturday:

Foxground 159mm, Nowra 154mm, Broughton Creek 143mm, Port Kembla 106mm

Rainfall totals since 9am Saturday till 5am Sunday:

Mongarlowe 160 mm, Broughton Creek 150 mm, Bettowynd 141 mm

The State Emergency Service advises that people should:
* Move vehicles under cover or away from trees.
* Secure or put away loose items around your house, yard and balcony.
* Keep at least 8 metres away from fallen power lines or objects that may be energised, such as fences.
* Trees that have been damaged by fire are likely to be more unstable and more likely to fall.
* Report fallen power lines to either Ausgrid (131 388), Endeavour Energy (131 003), Essential Energy (132 080) or Evoenergy (131 093) as shown on your power bill.
* Don't drive, ride or walk through flood water.
* Keep clear of creeks and storm drains.
* If you are trapped by flash flooding, seek refuge in the highest available place and ring 000 if you need rescue.
* Be aware that run-off from rainfall in fire affected areas may behave differently and be more rapid. It may also contain debris such as ash, soil, trees and rocks.
* After bushfires, heavy rain and the loss of foliage can make the ground soft and heavy, leading to a greater chance of landslides.
* Stay vigilant and monitor conditions. Note that the landscape may have changed following bushfires.
* For emergency help in floods and storms, ring your local SES Unit on 132 500.