Pat Shingleton: "Today, Was THE Day..."
This date in 1944 marks the greatest military operation in history. If the weather was unfavorable for Operation Overlord, it would have postponed the invasion for two weeks until tides were suitable for the landing. In 1944 there were no meteorological observations or the use of computer models. Years ago, predicting weather conditions over the English Channel was challenging. Weathermen depended on secretive ship and plane reports and from spies on the European mainland. These observations were coded, forwarded to England and tediously plotted to maps by hand. Numerous groups extrapolated data, including: a civilian group in Dunstable, England, The British Meteorological Service, U.S. Forecasters called, "Widewing," and the British Navy.