On June 4, 1944, James Stagg told the Allied command to halt the 7,000 naval vessels already committed to the invasion of Normandy. The chief meteorologist had looked at the weather over Western Europe and decided the risk was too great, even with more than 160,000 troops waiting to cross the English Channel.
That call sits at the center of Pressure, a new drama that premiered in theaters on May 29 and takes place during the 72 hours leading up to D Day. Brendan Fraser plays Dwight D. Eisenhower, and Andrew Scott plays Stagg, the dour Scottish forecaster whose job was to tell the supreme commander something he did not want to hear.
Stagg’s warning came in the wee hours of June 4, after he had worked with forecasters from the Royal Navy, the British Meteorological Office and the U.S. Strategic and Tactical Air Force. Eisenhower had already set June 5 as the invasion date, but the Allies had only a small nine-day window in May and June that was suitable for the assault, and the weather was turning against them. In his diary that day, Stagg wrote, “I am now getting rather stunned — it is all a nightmare.”
The film is adapted from writer David Haig’s 2014 play of the same name, and director Anthony Maras has described Stagg as the kind of figure history often leaves at the edge of the frame. Scott said of the role, “He was just greatly interested and brilliant at his job,” while Maras called him “an intellectual superhero” for having the courage to tell people in power what they needed to hear, not what they wanted to hear.
The stakes were not abstract. The invasion required long days for maximum air power, a near-full moon to guide ships and airborne troops, tides strong enough to expose beach obstacles at low tide and float landing vehicles far inland at high tide, and an hour of daylight before H-Hour for accurate bombardment. Pressure uses those details to show how close Operation Overlord came to collapsing before it even began.
That is what gives the story its force today: the landings that followed on June 6, 1944 — when over 160,000 Allied troops crossed the Channel onto the beaches of Normandy — depended on a forecast, a timetable and one man willing to say no. Stagg’s son later called him a “dour irascible Scot,” but on the morning that mattered, he was the person keeping the invasion from turning into a disaster at sea.
