Storm Babet: second person killed as Storm Babet batters Scotland
A 57-year-old woman also died on Thursday after being swept into a river in the county.
A Police Scotland spokesperson said: "(At) around 5.05pm on Thursday October 19 2023, police received a report of a one-vehicle crash in which a tree struck a van on the B9127 at Whigstreet near Forfar.
"Emergency services attended, however, the 56-year-old driver was pronounced dead at the scene.
"Next of kin have been informed and a report will be sent to the Procurator Fiscal."
The Met Office has issued a new red warning for rain, meaning there is a risk to life, covering parts of eastern Scotland all day on Saturday.
Rescue operations are under way in the Scottish town of Brechin, Angus, after flood defences were breached in the early hours of Friday morning, leading to hundreds of homes being surrounded by water.
The local council has appealed for donations of warm clothes after 40 people turned up to rest centres while "soaked".
There is also an ongoing helicopter search in Aberdeenshire following a report of a man trapped in a vehicle in floodwater.
Scotland's First Minister Humza Yousaf warned that the further red warning issued by the Met Office would "intensify" the disruption caused by torrential rain from Storm Babet.
Mr Yousaf posted on X, formerly Twitter, regarding the "further red weather warning issued by @metoffice for Saturday".
He told people this would "intensify the disruption already being experienced".
Mr Yousaf said the Scottish Government would continue to liaise with local organisations and the emergency services.
"People's safety is our number one priority," he stressed.
Further south, the weather was starting to have an impact in the north-east of England.
A lighthouse at the mouth of the River Tyne had also been damaged in Storm Babet, port officials said.
With the ongoing dangerous sea conditions, it was not safe to assess the damage to the lighthouse at South Shields, the Port of Tyne authority said.
No traffic was going in and out of the river with six metres of sea swell, it said.
The public have been urged to keep away from the area, particularly the piers, by the port authority, due to the unsafe weather conditions.