Source: Bureau of Meteorology

For people in parts of Blue Mountains/Hawkesbury area.

Issued at 4:37 pm Friday, 25 March 2022.

The Bureau of Meteorology warns that, at 4:35 pm, severe thunderstorms were detected on the weather radar. They are forecast to affect Bell, the Mount Tomah Botanic Gardens and the Grose Valley in the Blue Mountains by 5:05 pm and Blackheath by 5:35 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.