The Polar Vortex is a large area of low pressure and cold air surrounding Earth’s poles. When the vortex is strong, it keeps the cold air locked in the Arctic. However, when it weakens or “disrupts,” frigid air spills south into the United States, Europe, and Asia, causing extreme cold snaps and winter storms. Stay tuned for the latest polar vortex split updates and winter forecasts.
Winter 2026–2027 turns colder for parts of the central, southern and eastern U.S. as Super El Niño strengthens a split-flow jet pattern.
Winter 2026–2027 Forecast Turns Colder for Parts of the U.S. Read Post »
Winter 2026–2027 forecast: a potentially historic El Niño, updated snowfall signals for the U.S., Canada and Europe, and the key Polar Vortex risk for mid-winter.
Winter 2026–2027 Forecast: Historic El Niño, Snowfall Outlook and Polar Vortex Risk Read Post »
Europe autumn 2026 weather forecast by month and region. El Niño, above-normal temperatures, heavy rain, Atlantic storms, wildfire risk and early snow.
Europe Autumn 2026 Weather Forecast: El Niño, Rain, Storms and Early Cold Read Post »
El Niño 2026–2027 is strengthening rapidly. NOAA gives an 81% chance of a very strong event. See the Niño 3.4 data, hurricane outlook and possible U.S. and European winter impacts.
Super El Niño 2026–2027 Accelerates: NOAA Forecast and Impacts for the U.S. and Europe Read Post »
A preliminary Winter 2026–2027 forecast for the United States, Canada and Europe: Super El Niño, record-low Arctic sea ice, stratospheric winds, Polar Vortex risks, snow, storms and cold outbreaks.
