One of the wildest weather phenomena I have seen. Looking across the Cheyenne airfield yesterday the moment of frontal passage. You can see shimmering density differences/atmospheric lensing as the wedge of cold air approached! Same science that causes Fata Moranga/mirages! #wywx pic.twitter.com/CTKsnF4siD

— Michael Charnick (@charnick_wx) December 22, 2022