Source: Bureau of Meteorology


Issued at 1:17 pm AEST on Sunday 29 June 2025

Flood Watch Number: 1

MINOR FLOODING POSSIBLE IN THE FLOOD WATCH AREA FROM TUESDAY

A trough will move east across the state today and deepen offshore on Monday. A coastal low will develop in the trough on Tuesday and move east across the Tasman Sea from Thursday. This low is expected to bring widespread moderate to heavy rainfall across the flood watch area and may cause minor flooding in several catchments from Tuesday.

Catchments in the Flood Watch area are relatively wet following recent rainfall.

There is some degree of uncertainty over the exact location and timing of the heaviest falls. Localised river level rises, and flash flooding are likely within the areas of heaviest rainfall.

This weather system has the potential to cause minor flooding in the Flood Watch area from Tuesday. Flood Classes (minor, moderate, major) are only defined for catchments where the Bureau provides a flood warning service.

Catchments likely to be affected include:

Upper Nepean RiverMinor flooding

Hawkesbury and Lower Nepean RiversMinor flooding

Upper Coxs River

Colo RiverMinor flooding

Macdonald RiverMinor flooding

Northern Sydney

Southern Sydney

Parramatta River

Cooks RiverMinor flooding

Georges and Woronora RiversMinor flooding

Illawarra Coast

For the latest flood and weather warnings see http://www.bom.gov.au/australia/warnings

For the latest rainfall and river level information see http://www.bom.gov.au/australia/flood

Safety Advice:
Don't drive, walk, swim or play in floodwater because it is dangerous.
Stay away from flooded drains, rivers, streams and waterways.
Obey road closure signs. Plan ahead so you don't drive on flooded roads.
Check the ABC and local media for updates. The situation can change quickly, so stay informed.
For local emergency management warnings and advice visit www.ses.nsw.gov.au.
For emergency assistance call SES on telephone number 132 500. In life-threatening emergencies, call 000 (triple zero) immediately.

Rainfall and River Conditions Map