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<br />precipitation data through their voluntary raingage observer network <br />and the local crop hail insurance companies. <br /> <br />C. Summary of Muddy Road IV Operations <br /> <br />1. Monthly Summary <br /> <br />Month to month variation in seeding activity is of <br />interest to planners in the allocation of resources for future seasons. <br />A first look at the variability in activity is shown in Table 1. <br /> <br />Typically, the !reql!ency of "rain augmentation only" <br />9ays~~asa.!lluIDaxim1,1m. i,!.A@:it.3:11d. thenagain in late Jul'y. an~ <br />..August. In May, June and earlYJ.t!ly storms were usually intense <br />and required hail suppression treatment. Hail suppression seeding <br />- ---,.""~~,,,,.. - --"-'"" <br />~~~sually followed by seeding forE.ain_~,!!::!!ion. For this <br />reason and because there is evidence that storms seeded for hail <br />suppression causes precipitation (radar echoes) to expand in area <br />and duration, hail suppression days were also classified as rain <br />____.. '., ' "-."<_.. _~_v...__,~,", ._,",__ _."'''_ _, _ , _ _ '.'. <br />aU!1:mentation davs. <br /> <br />\ <br /> <br />More extensive study of storm behavior can be made <br />by use of Muddy Road data in conjunction with that collected from <br />other sources. For example, comparison of the physical character- <br />istics and the precipitation from seeded and non-seeded storms <br />can be made when raingage and crop hail data become available. <br /> <br />2. Comparison with Previous Seasons <br /> <br />The tables of daily seeding operations shown in <br />Appendix A contain operating statistics which can be compared with <br />previous Muddy Road seasons. Table 2 is a summary of operating <br />logistics for the four seasons, 1975 through 1978. <br /> <br />14 <br />