Police in Nottingham are appealing for help finding a 31-year-old woman from Worksop.
Vanessa Firth left her house on Netherton Road, Manton, at 6:45pm on Wednesday and has not been seen since.
Vanessa is white, of medium build, has short black hair and is around 5ft 3ins tall.
She was last seen wearing blue jeans, with black boots and a dark blue or black coat.
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It will be hot with sunny spells today and feeling humid. Thundery showers are possible later.
Expected to be largely fine and hot but with isolated thunderstorms
Health professionals are advising people to take extra care in hot weather.