PEOPLE around the Bourke, Lightning Ridge, Brewarrina, Goodooga, Enngonia and Fords Bridge areas are being warned about flash flooding.
At 9.35pm the Bureau of Meteorology issued a warning about severe thunderstorms likely to produce very heavy rainfall and flash flooding in the warning area over the next several hours.
This warning comes after the bureau cancelled an earlier warning for the north west, central west and upper western slopes and plains districts.
Earlier this morning the Bureau of Meteorology issued a severe weather warning for flash flooding for people in the mid north coast forecast district.
The severe weather warning for the Northern Rivers forecast district and parts of the Northern Tablelands forecast district has been cancelled, but the situation will continue to be monitored and further warnings will be issued if necessary.
A slow-moving high over the Tasman Sea is directing moist easterly winds onto the New South Wales coast, while a low pressure trough is over southeast Queensland.
The high is expected to weaken during 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 by Saturday.
Rain and thunderstorms which may lead to flash flooding is forecast for parts of the Mid North Coast forecast district.
In the 24 hours till 9am Thursday Bellinger has recorded 157 mm of rain, Dorrigo 119 mm and Coffs Harbour 104 mm.
Flood Warnings are current for the Tweed, Richmond - Wilsons, Clarence and Orara, Bellinger, Nambucca, Macleay, and Hastings River Valleys.
With the rainfall expected during Thursday and early Friday there is a greater than 70% chance of renewed river rises causing minor to moderate flooding as well as local flash flooding along the following river valleys:
1. Bellinger - Nambucca - Coffs Harbour
2. Clarence - southern half including the Orara 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.