Missing 81-year-old NSW woman found

An elderly woman who left her NSW Central Coast home to go shopping has been found in Sydney's northern beaches more than 24 hours later.

Thelma Tregoning, 81, was last seen by neighbours at her Wyoming home at around 9am on Thursday when she drove away in a red Toyota Camry, police said.

Ms Tregoning was located safe and well 80km from her home in Mona Vale just after midday on Friday.