The 81st anniversary of World War II's D-Day was Friday, June 6th, but it could have been another day. Weather and meteorologists were a huge factor in arguably the most important battle of mankind, changing the course of history.

The meticulous planning of D-Day in World War Two took years, a massive undertaking and a mission that would change the course of history. The known enemy was fierce, but was unknown or uncertain. The weather could have spelled disaster for the Allied forces. 5000 ships crossing the English Channel, thousands of aircraft, millions of troops were at the mercy of the weather.

There were no satellites, computer models or radar. Weather forecasting at the time was primitive. This is a hand-drawn weather analysis leading up to D-Day forecasts were based on communica

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