Sun Haloes 'n' Sundogs

There was parhelia in a couple of forms in the icy air of Eastern Iowa on Tuesday, January 21, 2014.
The top image shows a beautiful sun halo seen from Progress Drive at Martha's Way in Hiawatha, Iowa. A frigid aircraft contrail runs through the circle. Ground air temperature at this time--11:44 AM CST--was -1 degree F. The bottom image shows a sundog in the southwest sky as seen from the entrance of Echo Hill Presbyterian Church along C Avenue near Marion, Iowa around 3:53 PM. Air temperature at this moment was 2 degrees F. Parhelia are created by sunlight refracted through a 22-degree angle by horizontally oriented hexagonal ice-crystal plates.