A major storm has hit Lennox Head this morning.

A number of homes have been destroyed, power lines are down and a number of caravans have been overturned at the Lennox Head Caravan Park.

The storm hit the township of Lennox Head around 7.30am today (Thursday 3 June).

Police urge all local residents to stay inside their homes and to contact the State Emergency Service should they require assistance on 132 500. In the case of emergencies call Triple Zero (000).

Pacific Parade, Lennox Head, has been closed to traffic and residents are asked to stay away from this area as power lines are down and are considered dangerous.

Further details with respect to evacuation centres will be supplied in due course.

The SES reports that, according to the Bureau of Meteorololgy, a trough lying off the New South Wales North Coast has deepened overnight, leading to the development off a low pressure centre off the coast.

Widespread showers and rain are expected over the north-east of the state during this time, with the chance of local thunderstorms.

Later today and on Friday the low is forecast to move slowly south, before moving away to the Tasman Sea on Saturday.

Severe thunderstorms are likely to produce large hailstones, very heavy rainfall and flash flooding in the warning area over the next several hours. Intense waterspouts near these thunderstorms may also produce destructives winds. Locations which may be affected include Lismore, Lennox Head, Byron Bay, Ballina, Brunswick Heads, and Evans Head.