Authorities have found the body of a man whose car was swept away and submerged in floodwaters in central Victoria.

Search crews found the local man in his car as the floodwater in Seymour, about 100km away from Melbourne, began to go down.

Police were told the man drove into water just after 2am on Monday and his car was swept into an overflowing creek.

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A member of a nearby SES crew, who was attending a separate storm damage job, witnessed the man’s vehicle going into the water.

He tied a rope around his waist and reached the car, but it filled with water and submerged.

The police airwing, local officers and SES crews spent the early morning searching for the man, who was reportedly driving a vehicle owned by the Best Choice Bakery in Seymour.

A minor flood warning remains in place for nearby Hughes Creek, at Tarcombe Road, which peaked at 2.8 metres on Sunday night.

Crews responded to more than 170 storm-related jobs across Victoria, including three reports of cars trapped in floodwaters, trees down and minor building damage.

Frankston, in outer Melbourne, was the busiest region, followed by Seymour.

Heavy rain began pelting the region in the early evening on Sunday, with almost 80mm falling in Graytown within a couple of hours.

The Seymour area copped between 40 and 50mm of rain over a few hours.

Bureau of Meteorology senior forecaster Chris Godfred said there was a risk that another thunderstorm could hit the area again on Monday.

“It does look like the potential for storms is going to be over north central, and extending across western Victoria,” he told AAP.

SES state duty officer David Tucek urged Victorians not to walk, ride or drive through floodwater.

“Don’t let your children play near it,” he told 3AW.

“Stay away from those waterways and storm drains, and if you do see powerlines down, stay away from those as well.”