Abstract
Analyses drawn from the synoptic data gathered over the eastern Caribbean in Project ECCRO, October 1965, revealed the presence of an upper tropospheric cold Low. (With assumption of state motion), the fields of wind, height, temperature, water vapor, vertical velocity, clouds, and weather were transferred to a relative coordinate system traveling with the motion of the cold Low. This process yielded composite fields in which the 6 days of data were combined into 1. These fields, showing the structure of the cold Low at five different levels in the troposphere, are presented and the evolution of cloud and moisture patterns are discussed.