Storms and prominent features in the atmosphere of Jupiter are seen as dark or white spots, often rather irregular in shape. The smaller features may be seen to develop, evolve and fade in a short period of time. The lifetime of some features has been studied over a range of infrared wavelengths from 600 nm to 1000 nm. The data lead to the development of a temperature profile of the features. A technique for the study of subtle differences in the brightness of features as a function of wavelength has been developed.