Today we had the pleasure of hosting Dr. Judah Cohen for a discussion focused on weather. Judah is a Director of Seasonal Forecasting at JANUS Research Group and a Research Scientist at the Massachusetts Institute of Technology. His work focuses on sub-seasonal to seasonal weather forecasting, with particular expertise in the polar vortex, Arctic climate variability, and the factors that drive winter weather across North America and Europe. We were excited to hear Judah’s perspective on the upcoming season, the evolution of weather forecasting, and how new technologies including AI could improve our ability to predict weather further into the future.
In our conversation, we explore the evolution of weather forecasting and Dr. Cohen’s career studying sub-seasonal to seasonal weather patterns, including the industry’s progression from historical analogs and statistical methods to increasingly sophisticated physics-based models. We discuss how satellite observations and expanded global datasets have improved our understanding of the atmosphere, as well as the limitations of historical weather data and where today’s models continue to struggle, particularly beyond the traditional one- to two-week forecasting window. Dr. Cohen shared his perspective on the growing role of AI in weather forecasting, the strengths and limitations of current dynamical models, and why better modeling of the interactions between the troposphere, polar vortex, and jet stream could meaningfully improve longer-range forecasts. We also discuss the respective roles of academia, government forecasting centers, and private-sector companies in advancing the next generation of weather modeling.
We examine upcoming winter outlooks and the implications of a potentially historic “Super El Niño.” Dr. Cohen explains why El Niño’s influence on winter weather is not necessarily linear and cautioned against assuming that an exceptionally strong El Niño guarantees an exceptionally warm winter. We explore his research linking Siberian snow cover to disruptions of the polar vortex and colder conditions in eastern North America as well as the potential for episodic cold and snow even during an otherwise mild winter. We cover the outlook for Europe, where natural gas storage levels make winter weather particularly consequential, and the difficulty of using El Niño alone to reliably forecast European conditions. We also touch on how an unexpected, multi-week cold snap could materially affect natural gas demand and prices, highlighting the significant implications of improving weather forecasting for energy markets and preparedness for extreme winter events.
Mike Bradley opened the discussion by noting that the Dow Jones Industrial Average (DJIA) fell ~600 points this week as investors grappled with higher oil prices and rising U.S. bond yields. The 10-year Treasury yield climbed to ~4.8%, while the 30-year reached ~5.25%. With August CPI and PPI reports due later this week, Mike noted that inflation data could play an important role in shaping interest rate policy at the Sept. 16 FOMC meeting. Turning to energy markets, WTI crude oil increased ~$2/bbl to ~$94/bbl amid renewed U.S.-Iran tensions, with reports of potential explosions on Kharg Island, Iran’s primary oil export terminal. European natural gas prices also continued higher, reaching ~$26–$27/MMBtu and bringing year-to-date gains to ~180%, as concerns grow over Europe’s ability to replenish storage ahead of the winter heating season.
Mike wrapped by highlighting the Barclays Energy-Power Conference in New York City, which he is attending this week. Based on his initial meetings, he noted a more constructive tone among companies and investors, with growing optimism around the energy and power outlook into 2027. Veriten Senior Advisor Deborah Byers also joined and added her perspectives and questions throughout the conversation.