Source: Bureau of Meteorology

For people in parts of Hunter, Metropolitan, Central Tablelands, North West Slopes and Plains and Northern Tablelands Forecast Districts.

Issued at 10:43 pm Friday, 7 September 2018.

Severe thunderstorms are likely to produce large hailstones and heavy rainfall that may lead to flash flooding over the next several hours in parts of the Hunter, Metropolitan and Central Tablelands districts. Locations which may be affected include Penrith, Katoomba, Springwood, Capertee, Bilpin and Oberon.

Severe thunderstorms are likely to produce heavy rainfall and damaging winds over the next several hours in parts of the North West Slopes and Plains and Northern Tablelands districts. Locations which may be affected include Armidale, Glen Innes, Guyra, Uralla, Emmaville and Ashford.

Severe thunderstorms are no longer occurring in the Northern Rivers and Mid North Coast districts and the warning for these districts is CANCELLED.

58mm of rain was recorded in 60 minutes to 6:21pm at Bankstown.

45mm of rain was recorded in 60 minutes to 6:18pm at Milperra.

Pea-sized hail reported at Zetland 6:10pm and Maroubra at 6:20pm.

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.