Source: Bureau of Meteorology

For people in Illawarra, Central Tablelands, Southern Tablelands, Snowy Mountains, Australian Capital Territory and parts of Mid North Coast, Hunter, South Coast, North West Slopes and Plains, Central West Slopes and Plains, South West Slopes and Northern Tablelands Forecast Districts.

Issued at 4:47 pm Thursday, 10 May 2018.

VIGOROUS WINDS EXPECTED TO DEVELOP ABOUT THE RANGES ON FRIDAY

A complex low pressure system near Tasmania is deepening in response to a cold front crossing the region. This low is expected to slowly move east resulting in vigorous winds across southeastern and elevated parts of the state on Friday.

DAMAGING WESTERLY WINDS, averaging above 63 km/h with peak gusts in excess of 90 km/h are expected to develop from late Friday morning along the New South Wales ranges and through the Illawarra district.

A GUSTY SOUTHERLY WIND CHANGE is then expected to move into southern New South Wales later on Friday. In alpine areas above 1900 metres, southerly winds are expected to average above 80 km/h with peak gusts in excess of 120 km/h following this change. BLIZZARD conditions are possible about alpine areas above 1700 metres with these winds. The National Parks Service of NSW recommends that people consider postponing back country travel until conditions improve.

Depending on how close to the New South Wales coast the low forms, these vigorous southerly winds may extend up the South Coast district overnight Friday into Saturday.

Locations which may be affected include Nowra, Armidale, Orange, Canberra, Goulburn, Thredbo and Yass.

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.
* Report fallen power lines to either Ausgrid on 131 388, or Endeavour Energy on 131 003 or Essential Energy on 132 080, as shown on your power bill.
* For emergency help in floods and storms, ring your local SES Unit on 132 500.