Severe thunderstorms are likely to produce heavy rainfall which could lead to flash flooding and damaging winds in the Canberra region, the Bureau of Meteorology has warned.

At 2pm, the bureau warned that severe storms could occur over the next several hours.

The warning areas included: the ACT, South Coast, Central Tablelands, Southern Tablelands, South West Slopes, Snowy Mountains and parts of the Illawarra district.

Severe thunderstorms were likely to produce damaging winds over the next several hours in the Riverina and parts of the Central West Slopes and Plains districts. Locations which may be affected include Dubbo, Parkes, Condobolin, Wagga Wagga, Albury, West Wyalong, Griffith and Narrandera. 

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 clear of fallen power lines. 
* Keep clear of creeks and storm drains. 
* Don't walk, ride your bike or drive through flood water. 
* If you are trapped by flash flooding, seek refuge in the highest available place and ring 000 if you need rescue.
* 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.