Source: Bureau of Meteorology

For people in parts of Sydney, Wollondilly/Wingecarribee and Greater Wollongong areas.

Issued at 9:47 pm Saturday, 5 March 2022.

Heavy rainfall from slow moving thunderstorms over southwestern Sydney and parts of the Illawarra.

Weather Situation: Slow moving severe thunderstorms continue to develop a cold front ahead of an upper low pressure system.

The Bureau of Meteorology warns that, at 9:45 pm, severe thunderstorms were detected on the weather radar near Campbelltown and Penrith. These thunderstorms are moving towards the south. They are forecast to affect Badgerys Creek, Liverpool and Darkes Forest by 10:15 pm and Holsworthy, Dapto and Lake Avon by 10:45 pm.

Heavy rainfall that may lead to flash flooding is likely.

Picton recorded 49mm in the 1 hour to 9:30pm.

Campbelltown (Mount Annan) has had 26.2mm since 9pm this evening.

The State Emergency Service advises that people should:
* 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.