Severe rain and thunderstorms are expected to continue in mid to northern New South Wales, particularly in the area west of Coffs Harbour.
Already in northern New South Wales floodwaters have closed Moodys Bridges on the Kalang River, isolating some 500 people, with a further 80 isolated on the Nambucca River near Bowraville.
No major accidents had been reported, SES Spokesperson Phil Campbell said at 3.50pm.
"Four HSC students and a teacher needed to be ferried by the SES to sit their exams in Bellingen this morning. Other than that, there have only been a small number of minor requests," Mr Campbell said.
"Do not drive, ride or walk in flood waters and check road conditions before you embark on a journey. If you require assistance call the SES on 132500," he said.
Torrential rain overnight on Monday resulted in flooding on the Orara, Bellinger and Nambucca Rivers.
Rain has increased in the area today, resulting in renewed river rises on the Orara and Bellinger Rivers.
Showers, thunderstorms and rain areas over central and northern NSW can be attributed to a trough from a low pressure system over inland Queensland.
Tomorrow the trough is expected to travel further west, with showers and isolated thunderstorms expected to continue in northern NSW until Thursday, according to the latest NSW weather update from The Bureau of Meteorology.
Meanwhile, The Bureau has issued a severe thunderstorm warning for southern Queensland.
Severe thunderstorms are likely to produce damaging winds, very heavy rainfall, flash flooding and large hailstones in Roma, Charleville, Cunnamulla, St George, Bollon, Mitchell, Dirranbandi, Injune and Augathella.
Conditions are expected to ease in the area on Wednesday.
When faced with an emergency:
If you need assistance with power loss in an emergency, contact ENERGEX on 13 19 62.
State Emergency Services and Volunteer Marine Rescue is the first point for help during floods and storms.
In a medical emergency the Queensland ambulance is there to help you.
You can track storms with the ENERGEX Lightning Tracker or you may wish to become a storm spotter through the Bureau of Meteorology. This community network of storm spotters observe and report on thunderstorms to the Bureau of Meteorology forecasting offices; helping them to learn more about the storm's progress.
For emergency assistance with house damage, and/or advice about temporary accommodation, food and clothing, phone the State Emergency Service on 132 500.
For power failure, water leaks and blockages, fallen power lines, or other electrical problems contact Country Energy.
Storm warning for southern Queensland
Thousands lose power in storms
Keep up-to-date with the latest weather information.
Got photos of the wild weather? Share them at firstname.lastname@example.org.
How's the weather in your area? Leave your comments below.
Update your news preferences and get the latest news delivered to your inbox.