The son of a missing Newport woman has made an emotional appeal for information.
Susan Reid, 56, was last in touch with her family on Tuesday but has not been seen or heard from since.
She is described as 5ft 7in, slim, with short blonde/greying hair and the disappearance is said to be out of character.
Her son Jamie, 21, said he had given no indication that anything was wrong when he was last in touch with her.
He said: “My mum has never done anything like this before so that’s the most worrying thing. She would usually get in touch with me if she was going to be going away for even a little bit of time.
“I spoke to her on Tuesday and texted her and she replied to me and everything seemed fine. Then on Wednesday I texted her again and I got no response.”
“When I went round yesterday that’s when I realised that she was actually missing.”
Susan, who stays in Kerr Street, works as a part-time librarian at Dundee University where she should have been working on Wednesday but did not appear.
Lifeboat crews from Broughty Ferry carried out a search of the Tay as part of the operation to find her.
Jamie said Susan’s sister and mother are travelling from Aberdeen to help with the search.
He said: “This is so out of character. We are all very concerned about her whereabouts and wellbeing.
“If anyone has any news I would urge them to come forward to the police. I would also ask that they keep an eye out in the surrounding area.”
Susan’s church, Newport Parish in Blyth Street, is having a prayer vigil for her safe return at 2-3pm on Saturday and also 2-4pm on Sunday.
Chief Inspector Adrian Annandale said: “We are growing increasingly concerned for Susan’s welfare the longer she remains missing, and we want anyone who has seen or heard from her, or who knows of her current whereabouts, to contact police.
“We would appeal to Susan to contact us directly (dial 101) so that we can confirm that she is safe.”