From spaceweather.com (Set the Archive Date to December 24 2023) The temperature of the polar stratosphere just set a 40-year low for the month of December. As a result, strangely-colored clouds are spilling out of the Arctic, with sightings as far south as Italy, Germany and Switzerland. They look like auroras, but they're not! They are polar stratospheric clouds forming due to the cold temperatures reaching the lower latitudes. From Locarno, Switzerland (+46°N)