Cecilia joined the Met Office at Belfast International Airport.
Her main job was observing the weather in all sorts of inclement conditions and as she wasn't a big fan of the cold and the rain, she decided to study and become a weather forecaster.
Her first radio broadcasts were at Nottingham where she was something of a novelty being both Irish and female - the remaining forecasters were male.
From Nottingham she moved south to London and started working at Broadcasting House where she helped launch BBC Radio 5 Live. Her first shift was on 1 April, and she stayed there for nearly three years working on Breakfast, The Magazine and Midday with Mair.
She returned to Belfast in the late nineties and began working for BBC Northern Ireland as the main back-up presenter.
In December 2006 she joined the BBC Weather Centre at Television Centre and broadcast regionally to many local radio stations in England as well as occasional TV cover in Belfast, Leeds, Cardiff and Bristol.
She was lucky enough to be involved in the live outside broadcast at Stormont on Devolution Day.
On 2 June 2008 she joined BBC Northern Ireland as a full-time member of their new weather team.