New Issue: Orbital Catastrophe Ahead? Read Now

Andrew Scott learned all about meteorology for his latest film Pressure

Andrew Scott plays World War II meteorologist James Stagg in a new film Pressure, which explores the crucial role weather forecasting played in D-Day

Join Our Community of Science Lovers!


On supporting science journalism

If you're enjoying this article, consider supporting our award-winning journalism by subscribing. By purchasing a subscription you are helping to ensure the future of impactful stories about the discoveries and ideas shaping our world today.


If it weren’t for a weather forecast, D-Day—the largest seaborne invasion in history—would have taken place on June 5, as originally planned. And if that had happened, the invasion would have ended in disaster. Thousands of men would have been swamped by storm-whipped waves. Instead Allied forces waited a day, and the rest is history.

The story of this pivotal battle in World War II has been recounted in countless books, movies and miniseries. But one crucial ingredient in the invasion’s success—that forecast—is still little known to the broad public.

The story of that history-bending prediction is the subject of Pressure, a new movie that stars Andrew Scott as WWII meteorologist James Stagg. Senior desk editor Andrea Thompson spoke with the actor about WWII, meteorology and the challenges of analog weather forecasting in the 1940s.

Andrea Thompson is senior editor for Earth and environment at Scientific American, covering the environment, energy and Earth sciences. She has been covering these topics for nearly two decades. Prior to joining Scientific American, she was a senior writer covering climate science at Climate Central and a reporter and editor at Live Science, where she primarily covered earth science and the environment. She has moderated panels, including as part of the United Nations Sustainable Development Media Zone, and appeared in radio and television interviews on major networks. She holds a graduate degree in science, health and environmental reporting from New York University, as well as a B.S. and an M.S. in atmospheric chemistry from the Georgia Institute of Technology. Follow Thompson on Bluesky @andreatweather.bsky.social

More by Andrea Thompson

Subscribe to Support Independent Journalism

Great science journalism requires human expertise, time, effort and creativity. And it costs money. That’s why I and the journalists here at Scientific American hope you’ll join our community.

When you subscribe, you are supporting staff and freelance journalists who are passionate about telling science stories that are true, important and compelling. Our editors and reporters are often experts in their fields, which means they understand the nuances of big discoveries and can untangle the breakthroughs from the hype. With a subscription, you are also supporting rigorous fact-checking to ensure the words we publish are precise and accurate. And you’re supporting original illustrations, graphics and photos that bring you closer to an advanced laboratory, an ice sheet in Antarctica or a space mission in orbit. You’re helping us craft other types of high-quality journalism as well: Our newsletters are carefully written, edited and curated by staffers you have or will come to know and love. Our Science Quickly podcast is based on original reporting, collaboration with editors and scientists and exacting production.

Subscriptions keep this engine running so we can continue to deliver thoughtful, rigorous and independent science journalism to you. In an era of viral misinformation, this work is crucial. If you value what we do, I hope you’ll consider joining us as a subscriber

Thank you,

Jeanna Bryner, Editor in Chief, Scientific American

Subscribe