Maureen (Flavin) Sweeney, a lighthouse worker in Ireland whose critical weather reports helped ensure the success of the epic D-Day invasion of Normandy in World War II, died on Sunday at 100 years old, according to multiple reports on Monday in Irish media.
Her death was received with reverence on Capitol Hill.
"Maureen Sweeney is a hero and saved countless lives of Allies," Rep. Jack Bergman, R-Michigan, told Fox News Digital.
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"The information she provided to Gen. Eisenhower and his command team made the difference in the success of the Allied operation on D-Day."
Sweeney's accurate prediction of a dangerous storm bearing down on Europe from across the Atlantic Ocean convinced Supreme Allied Commander Gen. Dwight D. Eisenhower and his staff to delay a planned June 4, 1944, invasion.
The successful invasion of June 6, amid a break in the stormy weather, hastened victory for the U.S. and Allies in World War II.
"Maureen, who was 21 in June 1944, worked at Blacksod Lighthouse, a remote lighthouse and weather station on the Mayo coast that supplied weather reports to the Allied forces during the Second World War," IrishCentral reports.
"On the night of June 3, 1944, Maureen became the first person to report a severe incoming storm from the Atlantic, prompting the Allied command to postpone the Normandy landings until June 6."
If Sweeney had issued an inaccurate report, the storm might have caused a disaster for the largest invasion armada in history, as it was poised to invade France by sea and air across the English Channel.
Thousands of American GIs might have been killed in a botched invasion amid unforeseen weather.
The storm, at the very least, would have created a massive logistical nightmare and delayed the invasion a month or more.
Eisenhower said the idea of delaying the D-Day invasion into July "was too bitter to contemplate," according to author Cornelius Ryan in his classic history of the event, "The Longest Day."
Just two years ago, Sweeney was honored by the U.S. House of Representatives for her role in the D-Day invasion.
"Her skill and professionalism were crucial in ensuring Allied victory, and her legacy will live on for generations to come," read a congressional dedication to Sweeney on June 6, 2021.
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The World War II hero discussed her contribution to the greatest endeavor in military history with the Irish Sun in 2016.
"We took the weather in the ordinary way and passed it on," Sweeney told the outlet, which added that she worked with her husband Ted at the lighthouse.
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"We got a message back again saying, ‘Please check and repeat.' So I went back, but I was right, the barometer had dropped."
The drop in atmospheric pressure was an indication that a surprisingly strong Atlantic Ocean storm was moving in over Europe.
Sweeney, a native of County Kerry, died at Sonas Ti Aire nursing home in County Mayo; her death was announced by family members, according to reports.
She is survived by four children, Ted, Gerry, Vincent and Emer, along with many grandchildren, great-grandchildren and great-great-grandchildren, Irish media sources report.
Rep. Bergman, a retired Marine Corps lieutenant general, added that he and his wife Cindy "will continue to keep Sweeney's famiiy in our prayers as we remember and reflect on her incredible dedication and service."
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