The Bureau of Meteorology has issued a severe weather warning for vigorous winds on Thursday.
A cold front will cross southern and central parts of New South Wales, followed by another on Friday.
These systems are expected to bring vigorous west to northwesterly winds to parts of the southern and central ranges.
Damaging winds, averaging 60 to 70 km/h with peak gusts in excess of 90 km/h are possible on Thursday for Alpine areas above 1600 metres, eastern parts of the Southern Tablelands district, elevated parts of the Illawarra district, elevated parts of the South Coast district, eastern parts of the Central Tablelands district and high country about Barrington Tops.
Damaging winds, averaging 80 to 90 km/h with peak gusts in excess of 110 km/h, are likely for Alpine areas above 1900 metres from late Wednesday night.
Winds are expected to ease by Saturday morning after the passage of the second front.
Locations which may be affected include Bowral, Braidwood, Katoomba, Perisher, Thredbo Top Station and the Barrington Tops.
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 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.
- For emergency help in floods and storms, ring your local SES Unit on 132 500.