Abstract
The geosynchronous satellite (ATS-III) time lapse cloud brightness data have been analyzed with a view to correlating the time variations of cirrus shield area to rainfall rate in mid-latitude storm complexes. While inadequate rainfall sampling precludes point-to-point comparison, an excellent correlation is obtained with the time-change of radar echo areas in the cloud complex. Also presented are preliminary results on excellent correspondence between subsynoptic scale cloud brightness anomaly patterns and the precipitation patterns in mid-latitude frontal zones.