UPDATE 3:43PM | A Severe Weather Warning issued for northern New South Wales has been cancelled.
A trough off the far northern coasts has shifted northward, meaning rainfall is easing in the region.
But the Bureau of Meteorology said the situation will continue to be monitored and further warnings will be issued if necessary.
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EARLIER 4:50AM | Residents on the NSW north and mid north coast are being urged to prepare for flooding, with more heavy rain expected across the region on Tuesday.
More than 200mm of rain has fallen in the last 72 hours and up to 150mm may fall in parts of the Northern Rivers district over the next two days.
The Bureau is warning a low pressure system has developed within a trough off the far southern QLD and northern NSW coasts and it will continue to generate heavy showers which could lead to flash flooding.
Locations which may be affected include Lismore, Grafton, Coffs Harbour, Byron Bay, Ballina, Casino, Kyogle, Yamba, Maclean, Woolgoolga, Sawtell and Dorrigo.
Over the last 72 hours to 4am Tuesday morning, Mullumbimby has recorded about 291mm, Terania Creek 263mm and Goonengerry about 252mm of rain.
Flood warnings are also in place for several areas:
1. Tweed – minor to moderate flooding
2. Brunswick – renewed minor to moderate flooding
3. Richmond/Wilsons – renewed minor to moderate flooding
4. Coffs Coast – minor flooding
5. Orara – minor to moderate flooding
6. Bellinger and Kalang – minor to moderate flooding
7. Nambucca – minor to moderate flooding
Minor flood warnings are current for the Brunswick and Richmond/Wilsons River Valleys.
The NSW SES are continuing to monitor the current weather situation, based on the Bureau’s weather and flood warnings.
The NSW SES recommends that business owners take advanced steps to prepare for the potential impact of further heavy rain may result in flash flooding with short timeframes for business owners to pack up and evacuate.