Emergency services are on the scene at Stockton where the roof of a nursing home has been ripped off by severe winds.

NSW Ambulance have evacuated 30 residents from the centre on Fullerton Street and ambulance crews are on hand to assess them after high winds tore a hole in the structure shortly after 10am.

300 square metres of the roof has been ripped from the structure and Fire and Rescue are assessing whether it can be strapped down.

Three fire trucks including a ladder platform and a rescue truck have responded to the incident and police are also at the scene.

Police, SES and Fire and Rescue are warning Hunter residents to stay safe as a damaging cold front continues to roll in across the state.

All ferry services on the Stockton-Newcastle line have also been suspended due to the wild weather.