Think of the stratospheric #PolarVortex like a wall of wind, corralling the ultra-cold, Arctic air over the North Pole. When it weakens, cold air spills south into places like the Lower 48, Europe & Asia.
Right now, the air in the stratosphere — the layer of the atmosphere above where most #weather occurs — is warming quickly & dramatically, in a phenomenon known as a sudden stratospheric warming event.
#ClimateChange #ExtremeWeather #Trump #NaturalDisasters #FEMA #NOAA #NationalGuard