D-Day: A Mayo weather reading during World War II that changed history

It is hard to imagine that a remote, windswept part of Co Mayo was the setting for an event 75 years ago that changed the course of history.

Yet, for a few tense days in June 1944, the success of the greatest military invasion the world had ever seen depended on weather readings taken by a 21-year-old Irishwoman at the remote Blacksod weather station on the Mullet peninsula in Co Mayo.