Source: Bureau of Meteorology

For people in parts of Metropolitan, Hunter, Illawarra and Central Tablelands Forecast Districts.

Issued at 8:43 am Saturday, 17 January 2026.

Showers and isolated thunderstorms bring heavy rainfall to parts of Greater Sydney.

Weather Situation: A trough along central parts of the coast generates areas of showers and isolated thunderstorms, with some of these delivering heavy rainfall.

Severe thunderstorms are likely to produce heavy rainfall that may lead to flash flooding in the warning area over the next several hours. Locations which may be affected include Penrith, Parramatta and Springwood.

Separate Severe Weather and Coastal Hazard Warnings are current at the time of issue.

Check https://www.bom.gov.au/weather-and-climate/warnings-and-alerts for the latest details.

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).