A record-early SSW in November 2025 and its implications for mid-latitude weather

Sudden Stratospheric Warming (SSW) is one of the most fascinating and, at the same time, one of the most important atmospheric phenomena occurring every winter in the polar stratosphere. Although it takes place high above us—specifically in the stratosphere, roughly 10 to 50 kilometres above Earth’s surface—it can exert a profound influence on weather ... More >>