YouTube user TheGrazla posted this footage of an incredible waterspout at Batemans Bay yesterday.
Wild weekend weather has seen a remarkable 24,000 lightning strikes recorded in NSW.
The Bureau of Meteorology said the state's highest rainfall was recorded at Coffs Harbour, with 160mm in the 24 hours to 9am Saturday.
Wind gusts of up to 100km/h were also recorded in the state's north.
The NSW State Emergency Service (SES) was kept busy, with 150 call-outs at the weekend, most from the northern township of Woodburn.
Most of the strikes occurred on Saturday in northern NSW, which was hit by a large storm cell, a spokesman from Weatherzone said.
Strikes were also recorded just south of Sydney and on the Far South Coast, where a storm whipped up the massive water spout off Batemans Bay.
At least four houses will have to be demolished in Woodburn after a devastating storm hit at about 7pm on Saturday.
The town, located south of Ballina and with a population of about 350, was lashed with 100km/h winds and 75mm of rain in 25 minutes.
SES local controller Jim McCormack said it was a "miracle" no one had been seriously injured.
A NSW SES spokeswoman said the south coast town of Bermagui had six call-outs yesterday.
The weather bureau said more storms may hit next weekend.