Source: Bureau of Meteorology

For people in parts of Blue Mountains/Hawkesbury, Maitland/Cessnock, Greater Newcastle, Gosford/Wyong and Sydney areas.

Issued at 5:27 pm Sunday, 6 July 2025.

The Bureau of Meteorology warns that, at 5:25 pm, severe thunderstorms likely to produce damaging winds and large hailstones were detected near the Yengo National Park southwest of Wollombi and the Glen Davis/Newnes district (north of Lithgow). These thunderstorms are moving towards the southeast. They are forecast to affect Bilpin, Colo Heights, the Wollemi National Park north of Kurrajong and Wollombi by 5:55 pm and Richmond, Windsor, Riverstone and Londonderry by 6:25 pm.

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 (131 388), Endeavour Energy (131 003), Essential Energy (132 080) or Evoenergy (131 093) as shown on your power bill.
* 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.