The Bureau of Meteorology has advised that severe storms are possible for communities along the North Coast.

NSW SES Assistant Commissioner Nicole Hogan said grounds are still saturated from intense flooding event in March, which means damaging winds bring the real risk of uprooting trees.

"With much of the State's soil still soaked from recent floods, it is important to be aware of dangerous trees and branches that could potentially fall on your home or property," Ms Hogan said.

"Strong winds can also bring down power lines, and damage roofs, while hail can also damage roofs, cars and break windows," she said.

Today: Partly cloudy. High (70 per cent) chance of showers, most likely during this afternoon and evening. The chance of a thunderstorm, possibly severe. Light winds. Daytime maximum temperatures between 19 and 25.

Wednesday: Cloudy. Very high (near 100 per cent) chance of showers in the north, high (70%) chance elsewhere. The chance of a thunderstorm, possibly severe. Light winds. Overnight temperatures falling to between 8 and 13 with daytime temperatures reaching between 17 and 22.

Thursday: Partly cloudy. Medium (50 per cent) chance of showers, most likely in the morning. The chance of morning fog in the south. The chance of a thunderstorm. Light winds. Overnight temperatures falling to between 8 and 13 with daytime temperatures reaching between 18 and 24.

Assistant Commissioner Hogan added that heavy rain could also lead to flash flooding.

"With all these possibilities we want communities to do what they can to be prepared," she said.

"Simple things like clearing gutters and down pipes of blockages, moving your car undercover or away from trees and power lines, and tidying lose items in your front and back yards can all go a long way to keeping you storm safe.

"If you can avoid travelling in severe weather, please do. But, if you do need to be on the road, please drive to the conditions.

"Strong winds can very easily cause obstructions on the road, and when it comes to floodwater, never attempt to drive walk or ride through it," Ms Hogan added.

For more information on how to prepare for a storm, heavy rain, or a flood, visit ses.nsw.gov.au. For weather warnings and the latest forecasts, visit bom.gov.au.

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