Sky and Ground Thermal Observation for NearSys Station, 8 February 2018

A thermal observation at 4:00 PM MST indicated the ground had a temperature of 33 *F and the altostratus over NearSys Station a temperature of -2 *F. Assuming a dry adiabatic lapse rate of 5.4 *F per thousand feet, The cloud base had an altitude of 6,500 feet.

The altostratus above NearSys Station in visible light

The altostratus above NearSys Station in long-wave infrared