A SEVERE weather warning issued by the Bureau of Meteorology for people in the Upper Western district remains current.
At 11pm the bureau said the severe thunderstorms are likely to produce very heavy rainfall and flash flooding in the warning area over the next several hours.
Locations which may be affected include Wanaaring, Weilmoringle, Enngonia, Barringun and Fords Bridge.
The severe weather warning earlier issued for the North West Slopes and Plains and Riverina districts has been cancelled.
A slow-moving high above the Tasman Sea is directing moist easterly winds onto the New South Wales coast, while an upper-lever trough remains over the state's north.
The high is expected to lose influence late Wednesday or Thursday as it moves across New Zealand and a cold front crosses the Tasman Sea, however it will be quickly replaced by another high from the Bight.
This is expected to become centered over the southern Tasman on Saturday. This will once again intensify the onshore airstream and rainfall in the northeast.
Heavy rain and possible thunderstorms which may lead to flash flooding are forecast for the Northern Rivers forecast district and parts of the Northern Tablelands and Mid North Coast forecast districts.
In the six hours to 11am today the heaviest falls occurred in the Tweed Valley area, with 116 mm of rain recorded at Kingscliff, 105 mm at Murwillumba, and 101 mm at Chillingham. Slightly lower falls were recorded further south.
- A Flood Watch is current for the Tweed, Richmond, Wilsons, Macleay and Hastings river valleys.
- Flood warnings are current for the Bellinger, Orara and Nambucca Rivers.
- Flood Warnings are current the Bellinger Nambucca and Orara Rivers.
At this stage there is a greater than 70% chance of Minor to Moderate flooding as well as local flash flooding along the following river valleys from Monday onwards:
- Tweed River
- Richmond & Wilson Rivers
- Clarence River
- Macleay River
- Hastings River
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.
Across NSW, about 75% of Flood Watches are followed by flooding.
FloodSafe advice is available at www.ses.nsw.gov.au.
The State Emergency Service advises that people should:
- Don't drive, ride or walk through flood water.
- Keep clear of creeks and storm drains.
- If you are trapped by flash flooding, seek refuge in the highest available place and ring 000 if you need rescue.
For emergency help in floods and storms, ring your local SES Unit on 132 500.
For infomation on road closures, please visit www.myroadinfo.com.au.\