Maureen Sweeney, whose weather forecast changed the timing of the D-Day landings during World War II, has died aged 100.
Ms Sweeney, who was 21, forecast an impending storm from Blacksod Lighthouse in 1944.
The remote lighthouse and coastguard station played a key role during World War II supplying Britain and the US with weather reports.
At 1pm on 3 June 1944, Ms Sullivan was first to forecast a severe Atlantic storm, which led to a change of plan by the Allied Forces and D-Day was postponed to 6 June.
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Her readings unwittingly gave the Allies a two-day warning of stormy conditions in western Europe, forcing General Dwight D Eisenhower to delay his planned invasion of Normandy.
In 2021, Ms Sweeney was awarded a special US House of Representatives honour for the role she played in changing the course of the conflict.
Her family said she passed away peacefully at a nursing home in Béal an Mhuirthead, Co Mayo.
