Rest centres were set up to accommodate all those forced to leave their homes.
In Brechin, the River South Esk breached defences and flooded River Street.
Image: Brechin residents being evacuated during the storm
Councillor Gavin Nicol, who represents the Brechin and Edzell ward, has warned that some residents could be out of their homes “for months, if not permanently”.
During his visit to River Street, Mr Yousaf said he is yet to have a conversation with the UK government about funding.
Image: Mr Yousaf speaking to Kim Clark as he looks at water damage in her house
He said: “I think it’s important that the assessments are done in terms of the scale of devastation, what the impacts will be and what funding is required.
“Then, of course, if necessary, we’ll have those conversations with the UK government.”
The first minister added: “I’m very keen to give an assurance to residents here that I’ve spoken to, to businesses here that I’ve spoken to, the government is there to support them as much as we can during the long road to recovery.”
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Brechin residents tell Sky’s Katerina Vittozzi that they are ‘upset and exhausted’ after flooding damaged their property