The Hunter region State Emergency Service says the problems caused by Tuesday's strong winds should alert people to the need to prepare their properties for the storm season.

The SES responded to more than 20 calls, mostly in the Upper Hunter, where trees were brought down and roofs were blown off.

The winds also caused blackouts across the region and at one stage more than 3,000 homes were affected.

SES Hunter region deputy controller Ken Speer says there are steps people can take to limit damage to their properties.

"They need to look around their house," he said.

"Are there are any loose items they should be dealing with? Trees that are overhanging or may have died. They are going to become a problem for them during the storm season and they need to attend to those trees.

"So they are some of the things they need to be doing.

"Check the gutters and make sure their gutters and downpipes are clear and that will help them for both for storms and potential fires in the rural area."