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Fig. 4—Results of rainwater analyses and rainfall-vate data for
Sept. 23, 1961.
that such an analysis would be sufficiently interesting that a complete
continuum will be analyzed in future work.
Diffuse Systems
Two rain-producing events among those reported here are conSidered to fit the category of diffuse convective activity as previously
described. These are the events of Sept. 30,1961, and May 19, 1962.
Synoptic Conditions
The nearest appropriate U.S. Weather Bureau maps,
for the 500-mb and surface levels, are shown in Fig. 6. The rain collections on September 30 were obtained from two prefrontal squall
lines, the first of which preceded the cold front by about 90 nautical