Few would have expected that the science of weather prediction could become the basis for a gripping film. Yet Pressure delivers on that unlikely premise, dramatizing the critical meteorological forecasts that shaped the D-Day invasion of Normandy on June 6, 1944.

The film features an excellent cast and remains closely faithful to historical events. As depicted on screen, Allied meteorologists were genuinely divided into two competing camps: those who relied on theoretical forecasting methods and those who depended on analysis of past weather patterns. The weather conditions portrayed in the film accurately reflect those that actually confronted Allied commanders as they weighed whether to launch the largest seaborne invasion in history. Group Captain James Stagg, the British meteorologist who served as Eisenhower's chief weather adviser, famously identified a narrow window of marginal improvement on June 6—enough to risk the crossing but not enough to guarantee it. The original target date had been June 5, postponed when conditions deteriorated beyond what the landing craft and airborne operations could tolerate.

The stakes of those forecasts were understood well beyond the war room. German meteorologists, disadvantaged by the loss of Atlantic weather stations and reduced U-boat reconnaissance, expected the poor weather to persist and judged an invasion unlikely in the immediate term—a forecast error that contributed to reduced readiness along the Atlantic Wall. After the war, President John F. Kennedy reportedly asked General Dwight D. Eisenhower what had given the Allies their decisive advantage during D-Day. Eisenhower's reply: "We had better meteorologists than the Germans."

The film has drawn strong praise. Tyler's earlier review described it as "a truly excellent movie, one of the best of the year," centered specifically on the meteorological forecasts leading up to the invasion. Thematically, Pressure explores the cultural differences between Americans and Brits, the inner workings of bureaucracy, the nature of leadership, and the proper role of science in government.

In the tradition of classic Hollywood cinema, most of the action unfolds across only a handful of rooms, carried by superb dialogue and performances. And although the outcome of D-Day is well known to every viewer, the film still manages to generate genuine suspense around several of its central plot points.