The coastal low-pressure system over the southern part of NSW brought strong winds to Lismore and the Northern Rivers today, causing some tree damage and temperatures to feel like 8 to 10 degrees.

The strong winds will continue into Thursday morning as a secondary lobe of the complex low will bring renewed rain and wind to southern NSW before tracking north and moving off the coast.

The Bureau of Meteorology issued a severe weather warning for damaging south to southwesterly winds averaging 55-65 km/h with peak gusts to 100 km/h to the Northern Tablelands, around Tenterfield and Drake.

Kristine McDonald, Acting Chief Superintendent, NSW SES Northeastern Zone, told the Lismore App that while we had very strong winds, they were not the destructive winds that were originally predicted.

"What we're looking at is these winds continuing through Thursday, and then hopefully that system will start to reduce as it moves offshore.

Kristine said there were roughly 10 jobs in the Lismore area and 77 in the entire northeastern zone.

"They have mostly been trees down from that storm impact, so that wind has been bringing down trees and causing tree damage and dropping branches. There has been some minor damage to some houses through lifting roof tiles, but there has been no extensive damage so far."

With further strong winds to come, the advice is to secure loose items if you haven't already.

"What you want to do is make sure that nothing becomes a projectile. If you have a trampoline, make sure it is secured. If you're working around or under trees, be very mindful that trees are being damaged, and if you find a tree down, please be very careful. We don't want anyone to be injured from any down powerlines or anything like that, so be very conscious of where you are and your surroundings."

Essential Energy said there were 1,960 homes still without power at 4pm on the North Coast and hinterland due to trees falling on powerlines. 7,000 homes and businesses suffered loss of power today across NSW.

"Customers are reminded to keep at least 8 metres away from fallen powerlines and to always assume that these powerlines are live and very dangerous. If you see fallen powerlines, please report the location to Essential Energy on 13 20 80," an Essential Energy spokesperson said.