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Europe Winter 2025–26: Models Lean Mild as Scientists Flag Conditional Cold-Risk

Climate-driven shifts could weaken the polar vortex, allowing rare bursts of severe cold despite a milder seasonal signal.

Overview

  • Seasonal guidance from NOAA’s CFS and ECMWF points to a warmer-than-average winter across much of Western and Central Europe.
  • Snowfall odds are forecast below normal in these regions, with slightly elevated probabilities mainly in Scandinavia and the Baltics.
  • Meteorological drivers—including a potentially unstable polar vortex, a negative QBO and a developing La Niña—could still trigger regional cold snaps.
  • Research highlights a climate paradox in which Arctic warming can raise the risk of rare, intense outbreaks even as a positive NAO, the solar maximum and long‑term warming curb prolonged, continent‑wide freezes.
  • Preparedness assessments warn that a sustained cold wave would strain power grids, hamper wind and solar output, surge gas demand and expose gaps in municipal contingency planning.