Leanne Walker, 36, was last seen by her family in Glusburn, Craven, yesterday evening and is believed to be in a distressed and vulnerable state.
A major search operation involving specialist officers was today being mounted by North Yorkshire Police.
Leanne is white, slim and 5ft 5in tall with long dark hair. When she was last seen, she was wearing a denim jacket with a white shirt underneath and white jeans and Converse-type trainers.
Anyone with information regarding her whereabouts is asked to call North Yorkshire Police using the force’s 101 number, quoting log reference 12160172540.