Source: Bureau of Meteorology

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

Issued at 6:19 pm Wednesday, 4 March 2026.

Heavy rainfall with storms near Bowral.

The Bureau of Meteorology warns that, at 6:20 pm, severe thunderstorms likely to produce heavy rainfall that may lead to flash flooding were detected near Erskine Park and St Marys. These thunderstorms are moving towards the east to northeast. They are forecast to affect Londonderry, Berkshire Park and Rooty Hill by 6:35 pm and Richmond, Windsor and Engadine by 6:50 pm.

39 mm was recorded at Bowral in the 1 hour to 4:15 pm.

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.
* Stay indoors away from windows, and keep children and pets indoors as well.
For emergency help in flood and storms, ring the SES on 132 500.
Stay updated on the Hazards Near Me NSW app or the ACT ESA website (https://esa.act.gov.au).