Source: Bureau of Meteorology

Issued at 12:26 pm AEST on Tuesday 1 July 2025

Flood Watch Number: 3

MINOR TO ISOLATED MODERATE FLOODING POSSIBLE IN THE FLOOD WATCH AREA FROM TUESDAY NIGHT

A vigorous complex low pressure system is deepening offshore of the Hunter Coast and will move towards Illawarra Coast Tuesday before turning and moving into the Tasman Sea during the day on Wednesday. This low is expected to bring widespread moderate to heavy rainfall across the flood watch area and may cause minor to moderate flooding in several catchments from Tuesday night.

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

A severe weather warning is current for Heavy rainfall, which may lead to flash flooding is developing in the Illawarra south of the Wollongong later today, extending southwards to reach Bega in the South Coast by evening.

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

Catchments likely to be affected include:
Wallis Lake
Minor flooding

Myall River
Minor flooding

Wollombi Brook and Lower Hunter River
Minor flooding

Upper Nepean River
Minor to Moderate flooding

Hawkesbury and Lower Nepean Rivers
Minor to Moderate flooding

Upper Coxs River

Colo River
Minor flooding

Macdonald River

Northern Sydney

Southern Sydney

Parramatta River

Cooks River
Minor flooding

Georges and Woronora Rivers
Minor flooding

Illawarra Coast

Shoalhaven River
Minor flooding

St Georges Basin
Minor flooding

Clyde River

Moruya and Deua Rivers
Minor flooding

Tuross River

Bega River
Minor flooding

Towamba River

Bemm, Cann and Genoa Rivers

Snowy River
Minor flooding

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