Coffs Harbour is expected to experience another severe storm this afternoon according to the latest from the Bureau of Meteorology.
The warning area also covers Sawtell, Dorrigo and Grafton, and further west to Armidale and Tenterfield.
According to BoM, severe thunderstorms are likely to produce large hailstones, damaging winds and heavy rainfall that may lead to flash flooding.
It comes just a day after many areas on the Coffs Coast experienced hail, some the size of golf balls.
See the full details below:
Australian Government Bureau of Meteorology - New South Wales
Severe Thunderstorm Warning
for LARGE HAILSTONES, HEAVY RAINFALL and DAMAGING WINDS
For people in Northern Rivers, Mid North Coast, Northern Tablelands and parts of Hunter and Central Tablelands Forecast Districts.
Issued at 1:27 pm Tuesday, 2 January 2018.
Severe thunderstorms are likely to produce large hailstones, heavy rainfall that may lead to flash flooding and damaging winds in the warning area over the next several hours.
Locations which may be affected include Grafton, Coffs Harbour, Armidale, Tenterfield, Sawtell and Dorrigo.
The State Emergency Service advises that people should:
* Move your car under cover or away from trees.
* Secure or put away loose items around your house, yard and balcony.
* Keep at least 8 metres away from fallen power lines or objects that may be energised, such as fences.
* Report fallen power lines to either Ausgrid on 131 388, or Endeavour Energy on 131 003 or Essential Energy on 132 080, as shown on your power bill.
* Keep clear of creeks and storm drains.
* Don't walk, ride your bike or drive through flood water.
* If you are trapped by flash flooding, seek refuge in the highest available place and ring 000 if you need rescue.
* Unplug computers and appliances.
* Avoid using the phone during the storm.
* Stay indoors away from windows, and keep children and pets indoors as well.
* For emergency help in floods and storms, ring the SES (NSW and ACT) on 132 500.