Source: Bureau of Meteorology

Issued at 12:29 pm EDT on Friday 7 February 2020

Flood Watch Number: 4

MODERATE TO MAJOR FLOODING POSSIBLE IN THE HAWKESBURY NEPEAN CATCHMENT AND PARTS OF THE SOUTH COAST

A coastal trough near the northern and central New South Wales coast is bringing increased rainfall to the New South Wales Coast. This trough is expected to deepen and gradually shift southwards, increasing rainfall along the central and southern parts of the coast and adjacent ranges during the next few days. For some areas, intense rainfall rates are possible with thunderstorm activity or with the formation of mesoscale lows embedded within the coastal trough.

The location of the heaviest falls will be determined by the movement and strength of the coastal trough, by where thunderstorms occur, as well as to the south of any transient low embedded within the coastal trough. The heaviest rainfall over the next 24 hours is initially focused about the Mid North Coast and the Lower Hunter but will shift south to focus about the Hunter, Sydney and Illawarra coasts Friday evening and into Saturday.

Heavy rainfall is currently expected to ease for parts of the Northern Rivers and northern parts of the Mid North Coast on Saturday, although showers are likely to continue.

Coastal catchments within the Flood Watch are area relatively wet due to recent rainfall in the last fortnight.

High tides forecast on Sunday through to Tuesday may exacerbate flood conditions in low lying coastal areas.

A Severe Weather Warning has been issued for the Mid North Coast, Metropolitan, Illawarra and parts of Northern Rivers, Hunter, Central Tablelands and Northern Tablelands Forecast Districts.

The weather system has the potential to cause flooding for the catchments listed from late Thursday onwards. Flood Classes (minor, moderate, major) are only defined for catchments where the bureau provides a flood warning service.

Catchments likely to be affected include:
Brunswick River and Marshalls Creek
minor flooding

Wilsons River
minor flooding

Macleay River
minor flooding

Hastings River
minor flooding

Camden Haven River
minor flooding

Manning and Gloucester Rivers
minor flooding

Wallis Lake
(local flooding)

Myall River
minor flooding

Karuah River
(local and riverine flooding)

Wollombi Brook and Lower Hunter River
moderate to major flooding

Newcastle Area
(local flooding)

Paterson and Williams Rivers
minor flooding

Central Coast
minor to moderate flooding

Lake Macquarie
minor flooding

Upper Nepean River
moderate to major flooding

Hawkesbury and Lower Nepean Rivers
minor to major flooding

Upper Coxs River
(local flooding)

Colo River
minor to major flooding

Macdonald River
(local and riverine flooding)

Northern Sydney
(local flooding)

Southern Sydney
(local flooding)

Parramatta River
(local and riverine flooding)

Cooks River
minor flooding

Georges and Woronora Rivers
minor to moderate flooding

Illawarra Coast
(local and riverine flooding)

Shoalhaven River
moderate flooding

St Georges Basin
moderate to major flooding

Clyde River
(local and riverine flooding)

Moruya and Deua Rivers
moderate to major flooding

Tuross River
(local and riverine flooding)

Bega River
minor to moderate flooding

Towamba River
(local and riverine flooding)

Bemm, Cann and Genoa Rivers

Flood warnings are current for the following catchments: Bellinger and Kalang and Orara Rivers

For the latest flood and weather warnings see www.bom.gov.au/nsw/warnings/

For the latest rainfall and weather forecasts see www.bom.gov.au/australia/meteye/

For the latest rainfall and river level information see www.bom.gov.au/nsw/flood
Flood Safety Advice:

This Flood Watch means that people living or working along rivers and streams must monitor the latest weather forecasts and warnings and be ready to move to higher ground should flooding develop.

Flood Warnings will be issued if Minor Flood Level is expected to be exceeded at key sites along the main rivers for which the Bureau of Meteorology provides a flood warning service.

Severe Weather Warnings will be issued or updated if very heavy rain is forecast or observed.

For more information on the Flood Watch Service: http://www.bom.gov.au/water/floods/floodWarningServices.shtml

FloodSafe advice is available at www.ses.nsw.gov.au

For emergency assistance call the SES on telephone number 132 500

For life threatening emergencies, call 000 immediately

Rainfall and River Conditions Map