Storm victims in northern NSW are being told to contact their insurers, with the state government unlikely to declare it a natural disaster area.

Emergency Services Minister Steve Whan said agencies were in the process of assessing the extent of damage in Lennox Head after the town was hit by a waterspout and 150km/h winds.

“At this stage it looks like most of the damage is to private properties rather than public infrastructure,” Mr Whan said in a statement on Thursday.

“That means it does not appear the event meets the fixed national criteria for natural disaster relief, but we will wait for the assessments to be completed before making any determination.

“I encourage those with damage to their homes to contact their insurers or appropriate authorities to report the damage.”

The wild weather tore roofs from buildings and destroyed at least 12 homes, leaving six people injured.

The town has since been shut down with downed powerlines cutting electricity supply to about 500 homes.

Lennox Head Mayor Phillip Silver was expected to appeal to the minister to make a natural disaster declaration.

Such a declaration typically means that councils, not-for-profit organisations, small businesses, primary producers and some other organisations are able to apply for funding or loans to aid essential repair works.

Mr Whan said Community Services could provide assistance for low-income earners who are uninsured and whose primary residence has been damaged.

“This assistance helps with the cost of replacing essential household items and structural repairs,” he said.

“People can contact the disaster welfare line on 1800 018 444.”

Premier Kristina Keneally is preparing to fly to Lennox Head where she will join Mr Whan about 7.30pm (AEST) on Thursday.

She will inspect the storm damage and speak with affected residents, many of whom are at the town’s Bowling and Sports Club which has been set up as an evacuation centre.

Volunteers are on standby in the region for possible further flooding and damaging weather conditions.

“Some people are likely to be isolated so if possible they should stock up on essential food and medical supplies now,” Mr Whan said.

“Farmers and others living and working along the rivers should immediately lift pumps and relocate livestock and equipment to higher ground.

“The SES has already carried out two flood rescues at Ballina and I would again urge people not to drive, ride or walk through floodwaters or allow their children to play in swollen creeks or stormwater drains.”