D-Day: The most important weather forecast in history

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On this day a very important forecast verified

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To go or not to go?

It was 70 years ago this week that Gen. Eisenhower's chief meteorologist, Group Capt. James Martin Stagg, made one of the most important weather forecasts of all time. Defying his colleagues, he advised Ike to postpone the invasion of Normandy by one day from June 5, 1944, to June 6, because of uncertain weather conditions.

A new book by author John Ross — "The Forecast for D-Day" — sees that forecast as a pivotal moment in world history.

"A bad forecast would jeopardize the entire operation," Ross writes in the book. "If he gave the word to 'go,' and the weather turned sour, the lives of thousands of men and massive amounts of equipment would be lost.

https://eu.usatoday.com/story/weather/2014/06/03/d-day-weather-forecast/9914207/

https://www.metoffice.gov.uk/binaries/content/assets/mohippo/pdf/library/d-day/d_day_the_role_of_the_met_office.compressed.pdf