With the Bureau of Meteorology predicting isolated showers and thunderstorms for most of this week, the State Emergency Service (SES) is advising residents to take extra care to protect themselves and their homes during this stormy season.

Wingecarribee SES Duty Officer Frank Richie said local SES crews were called out for a few minor storm incidents late Friday afternoon, including an incident in Burradoo where a lightning strike split a tree in half and sent a small branch through a wall.

The tree was at the back of the property owned by Barry and Pam Parsons, who said they saw a bright sheet of lightning and heard the loudest crash of thunder they had ever heard.

"It split right from top to bottom and it just exploded big splinters of wood out," Mr Parsons said.

"One bit flew across the fence and over the neighbours house and damaged a wall on the far side."

The Parsons felt the force of the explosion on the back windows of their house, and it took out the pilot light on their hot water heater.

The tree was so badly damaged it will be removed as soon as possible.

Mr Richie said there were a number of measures local residents could take to make sure their homes were storm safe.

"Make sure you secure or put away loose objects around your home or balcony, and clear away any rubbish," he said.

"Keep your car under cover and away from trees to prevent damage, and try to avoid going out in the open during a storm."

The SES also advises residents to stay away from windows when staying indoors during a storm, and to keep pets and children inside.

Residents are also advised to keep clear of fallen power lines, creeks and storm drains during a storm, and to unplug their computers and appliances.

For emergency assistance in a storm, contact the SES on 132500 for your local unit.