Kirsty studied geophysics at the University of Edinburgh, graduating with a first class honours degree before going on to spend three months as an intern at NASA's Goddard Space Flight Center in Maryland.
Further study at the University of Oxford followed, and during this time she was offered a three-month internship at New Scientist magazine where she went on to work as a sub-editor for four years.
Kirsty joined the BBC Weather team in September 2003. She completed the first part of her forecaster training at the Met Office College in 2004 and her advanced forecaster exams in 2005.
She presents weather forecasts across the entire range of BBC television and radio channels, including BBC one, BBC News and World News, Radio 4 and Radio 5Live.
She is something of a self-confessed gym bunny and sings with a local choir whenever her shifts allow.
Kirsty is godmother to her niece and nephew, Eilidh and Aidan, and lives in south London with her husband and cat.