Source: Bureau of Meteorology

For people in parts of Greater Newcastle and Gosford/Wyong areas.

Issued at 11:10 am Thursday, 23 December 2021.

The Bureau of Meteorology warns that, at 11:00 am, severe thunderstorms were detected on the weather radar near Dooralong. These thunderstorms are moving towards the south to southeast. They are forecast to affect Somersby and Warnervale by 11:30 am and Gosford, Wyong and Tuggerah by 12:00 pm.

Heavy rainfall that may lead to flash flooding is likely.

The State Emergency Service advises that people should:
* 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.