The Bureau of Meteorology has issued a severe storm warning for the South West Slopes and parts of Southern Tablelands, Central West Slopes and Plains, Riverina, Snowy Mountains and Australian Capital Territory Forecast Districts.
Severe thunderstorms are likely to produce damaging winds in the warning area over the next several hours.
A 90km/h wind gust was recorded at Cabramurra around 4pm.
The State Emergency Service advises that people should:
* Move your car 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.
* Unplug computers and appliances.
* Avoid using the phone during the storm.
* Stay indoors away from windows, and keep children and pets indoors as well.
* For emergency help in floods and storms, ring the SES (NSW and ACT) on 132 500.