The Bureau of Meteorology has issued a severe thunderstorm warning for parts of New South Wales, as giant hailstones hammer Sydney suburbs.
The "very dangerous" weather system was detected on the weather radar near from Gosford to Wollongong, with the Blue Mountains also in the line of fire.
It's the second day in a row severe storms have thundered across the region, and comes after three women - all aged in their sixties - were struck by lightning.
Hail started battering Bowral at 3:06pm this afternoon, while stones exceeding five centimetres in diameter were recorded at Hornsby, Kellyville, Pennant Hills and Collaroy from 4pm.
