Apparently a bubble of warm air didn't make it over the Himalaya, instead it went straight into the stratosphere, forced a sudden stratospheric warming event and killed the polar vortex. Usually that leads to a warm Arctic and cold continents and actually that's why the cars are colored white in my street at fifty something degrees North in Europe.

Update: I just learned via the retired physicist the polar vortex has survived and was instead split in halves. But speaking strictly, do vortexes cruising over Siberia and Canada still qualify as 'Arctic'?