Weather ❯ Meteorology ❯ Atmospheric Phenomena

Polar Vortex

Sudden Stratospheric Warming Polar Vortex Collapse Cold Fronts Jet Stream Dynamics Temperature Fluctuations Winter Weather Displacement Events Cold Weather Events Cold Air Masses

Rare Early Stratospheric Warming Puts Northern U.S. on Watch for December Cold

NOAA attributes early cold to an Alaskan ridge, indicating stratospheric impacts typically lag.