Sundogs are halos around the sun caused by the refraction of light by airborn ice crystals.
Randy is scheduled to leave tomorrow for McMurdo Station but the worsening weather makes a delay likely. Janice reports that she is feeling well after her emergency plane landing near McMurdo yesterday . The wind picked up today to around 10 knots and it made things a lot colder, ie. 50 below with the wind chill. These are formed by ice crystals in the air.