The Bureau of Meteorolgy has issued a severe weather warning for the Hunter, forecasting heavy showers, thunderstorms and possible flash floods.
The BOM’s website advises that an upper-level trough is crossing the Central Coast and a surface low is expected to form off Mid North Coast today and move southeast.
The weather patterns will lead to heavy showers and thunderstorms, which may lead to flash flooding in the Hunter.
State Emergency Service spokesman Phil Campbell said heavy rain had already caused flash floods on the Central Coast and a woman had to be rescued from her car in Narara this morning.
Gosford had 110mm of rain since yesterday morning and 65mm fell in one hour to 6am today.
It’s a bleak forecast for Sydney, as well as the Hunter and Gosford.
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Heavy rain also sparked flash flooding in parts of Sydney and the city can expect up to 100 millimetres of rain today.
Mr Campbell said there could be more flash flooding in parts of Sydney, the Illawarra and the North Coast today.
He said an early shower was forecast for tomorrow, with a chance of showers on Wednesday before clear days on Thursday and Friday.
Track the rain on the Bureau of Meteorology’s radar here.