The Bureau of Meteorology has issued a severe thunderstorm warning for the Hunter.
The warning said thunderstorms were likely to produce heavy rainfall that could lead to flash flooding over the next several hours in the Hunter.
In the event of severe storm weather, the State Emergency Service (SES) advises that people move cars from away from trees; secure loose items around the house, yard and balcony; and stay at least 8 metres from fallen power lines or potentially energised objects like fences.
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Residents can report fallen power lines to the energy provider shown on their power bill, including Ausgrid (131 388), Endeavour Energy (131 003), Essential Energy (132 080) or Evoenergy (131 093).
It is safest to stay away from creeks and storm drains and to refrain from walking, riding or driving through flood water.
For emergency help in NSW floods and storms, contact the SES on 132 500.
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