Latest model and satellite assessments confirm that the stratospheric polar vortex is not just weakening — it is splitting into separate lobes, a hallmark precursor to strong southward intrusions of Arctic air.
Polar Vortex Split, La Niña Instability and a Storm-Powered Atlantic Read Post »
Long-range weather models already pointed to a colder, snowier winter for the northern half of the continent, but a dramatic new development in the upper atmosphere has pushed winter risk into unprecedented territory
Winter 2025–2026 Snowfall Forecast: North America Faces a Potentially Historic Season Read Post »
In early November 2025, a sharp cold snap struck the U.S., with Arctic air surging into the Midwest, triggering powerful lake-effect snow across the Great Lakes region — particularly impacting Chicago, northern Indiana, Wisconsin, and western New York.
Arctic Invasion Triggers Snow Chaos Across the Midwest Read Post »
