Severe weather warnings have been issued in the Hunter and Central Coast regions as the system that has lashed northern NSW and southern Queensland is predicted to move south.
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The NSW Bureau of Meteorology has warned of gale forced winds on the coast between the Port Macquarie and Illawarra areas, with an expected east coast low to bring damaging surf, possible erosion and an abnormally high sea level south of Forster some time on Tuesday evening or Wednesday morning.
The BoM says the highest tide of the year could be broken by up to 0.2m, causing a risk of possible flooding in low-lying areas.
This is a particular concern for Wednesday morning's high tide.
A heavy rainfall warning has also been issued for Newcastle, Gosford, Sydney, Wollongong, Nowra and Batemans Bay.
"A deepening low pressure system near the Queensland and New South Wales border is moving off the coast," the weather bureau said in a warning issued early on Tuesday.
"It is then expected to drift southward parallel to the coast on Tuesday and rapidly deepen in response to an amplifying upper trough and low.
"At this stage, the system is forecast to approach central and southeastern districts on Tuesday night or during Wednesday, however, uncertainty exists on its exact timing and where the most significant impacts will occur."
On Tuesday, BoM data showed that Cooranbong had recorded 22.6mm of rain since 9am on Monday, while Gosford had 20.8mm.
State Emergency Service advice for dangerous weather conditions:
- Move vehicles under cover or away from trees.
- Secure or put away loose items around your house, yard and balcony.
- Keep at least eight metres away from fallen power lines or objects that may be energised, such as fences.
- 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 rescuing.
- For emergency help in floods and storms, ring your local SES Unit on 132 500.
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