Locals are warned to secure outside items and bring cars undercover with thunderstorms forecast this afternoon on the Coffs Coast.
The Bureau of Meteorology issued the first Severe Thunderstorm Warning just before 3:30pm, following reports of storms at Thora.
Thunderstorms, likely to produce large hailstones and heavy rainfall, as well as damaging winds are expected for Coffs Harbour, Sawtell, Woolgoolga and Dorrigo in coming hours.
It follows hot temparatures today around the Coffs Coast, with the mercury hitting the mid 30's.
See the full warning from BoM below:
Australian Government Bureau of Meteorology New South Wales
TOP PRIORITY FOR IMMEDIATE BROADCAST
Severe Thunderstorm Warning
for LARGE HAILSTONES, DAMAGING WINDS and HEAVY RAINFALL
For people in Mid North Coast, Hunter, Metropolitan and parts of Northern Rivers, Illawarra, Central Tablelands and Northern Tablelands Forecast Districts.
Issued at 4:12 pm Wednesday, 20 December 2017.
THUNDERSTORMS EXPECTED AHEAD OF A COLD FRONT IN NORTHEASTERN NSW
Severe thunderstorms are likely to produce large hailstones, damaging winds and heavy rainfall that may lead to flash flooding in the warning area over the next several hours. Locations which may be affected include Coffs Harbour, Port Macquarie, Taree, Newcastle, Gosford, Sydney and Wollongong.
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.
The next warning is due to be issued by 7:15 pm.