One Weather Forecast Changed the Course of WWII. Here’s the Real Story Behind ‘Pressure,’ a Drama About the Meteorologist Who Convinced the Allies to Delay D-Day A new movie starring Andrew Scott and Brendan Fraser dramatizes the tense 72 hours before the Allied invasion of Normandy, revealing how meteorology helped determine Operation Overlord’s success Brendan Fraser (left) as Dwight D. Eisenhower and Andrew Scott (right) as James Stagg in  Pressure , a new WWII drama about the weather forecast for D-Day Alex Bailey / Focus Features / Studiocanal In the spring of 1944, with Germany in control of much of continental Europe, the Allies pursued a long-anticipated path to victory: forcing the Nazis to fight a two-front war. From the east, the Soviets advanced on Berlin. Meanwhile, Britain, the United States and Canada sought to gain a foothold in France. To do that, they planned the largest amphibious invasion in human history—an event now known as D-Day .…