Source: Bureau of Meteorology

For people in Illawarra and parts of Mid North Coast, South Coast, Southern Tablelands, Northern Tablelands and Hunter Forecast Districts.

Issued at 10:29 am Wednesday, 10 September 2025.

Heavy rainfall developing over the southeast this afternoon, damaging winds from Thursday morning.

Weather Situation: A complex low is forecast to move over southeastern NSW and then offshore around Jervis Bay later today, pushing heavy showers and rain onshore to the coast and ranges. As the low deepens further and moves northwards into Thursday morning, damaging winds are also expected to develop near the coast and along the northern ranges.

For SOUTHEASTERN AREAS: HEAVY RAINFALL which may lead to FLASH FLOODING is forecast from Wednesday afternoon for parts of the Illawarra, northern South Coast and Southern Tablelands. Six-hourly rainfall totals between 60 to 100 mm are possible with 24-hour totals up to 140 mm.

DAMAGING SOUTHERLY WIND GUSTS with peak gusts of around 90 km/h are also expected along the coastal fringe from early Thursday morning.

Heavy rainfall and damaging wind gusts are expected to have eased here by mid-morning Thursday.

For NORTHERN RANGES: DAMAGING WESTERLY WIND GUSTS with peak gusts of around 90 km/h are expected to develop over parts of the Hunter, Mid North Coast and Northern Tablelands from Thursday morning, lasting into the afternoon.

Locations which may be affected include Wollongong, Goulburn, Nowra, Batemans Bay, Moruya Heads, Bowral and the Barrington Tops.

The State Emergency Service advises that people should:
* 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.
* 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.
* 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.