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~ I I I I I I I I I I I I I I I I I I hail developing from new storm growth and weak updrafts are prevalent, rainfall stimulation seeding can be highly productive over large areas using wing generators. It's likely under these conditions the dynamic effect is markedly reduced, whereas, a static seeding effect is being achieved causing the cloud's micro-physical characteristics to be altered by seeding. There is another form of cloud system which has occasional important seeding potential for producing precipitation in Kansas: the multiple-celled-convective system (MCCS). MCCS cloud usually form as a cluster of small, wispy, weak air-mass type cloud bubbles within a fairly small area---typically 10 - 30 miles in diameter. If one, or more, clouds grow sufficiently and can merge with another, the resulting cloud often tends to enlarge and continue growing, In chain reaction fashion this promotes more mergers of nearby clouds, thus continuing to increase both cloud volume and intensity, etc. Such cloud systems eventually are capable of producing precipitation over large areas and persist much longer than would otherwise be the case under normal conditions, Initially, updrafts found within such a system often are embedded and difficult to locate, however, once this cloud system grows to a certain size, updrafts generally organize better and the resulting cloud becomes easier to continue seeding, Under the unseeded natural condition, MCCS regions often become a "first echo" seen on radar, First echoes have a high correlation to being the day's first severe storm. Most of the important research on the dynamics of the multiple-celled-convective system was done in the 1980s in West-Central Texas, Radar studies of Northwest Kansas clouds from 1972 to 1974 by Dr, Dean Bark found this area was likely to be a fertile breeding ground for MCCS cloud development. Data comparisons to Western Kansas suggest Western Kansas may be an even better area for similar clouds developing than was the research area in Texas. In earlier years of the WKWMP scant attention was paid to those weak-appearing multiple-celled cloud clusters until one had grown fairly large. Ifthose cloud systems had been inspected and treated in their early stages instead of waiting to see whether they would grow_to become larger, most likely greater success in rain stimulation and/or hail suppression would have occurred in them. Today, however, we anticipate these smaller cloud clusters can develop into larger cloud systems and will provide targets of opportunity to produce increased rainfall over large areas, or that these could become regions of initial daily severe storm development. Flights are launched early when such conditions arise. Spectacular results in rain enhancement appear to have occurred when seeding similar cloud systems in the past. We've identified one type of problem cloud on the WKWMP formed by elevated convection, It has been with us forever, but until relatively recently it has not been identified as such, nor widely recognized and considered as a type of "new-growth" cloud to be dealt with, different from a pre-collapse new-growth feeder cloud. As far as this writer can determine, this subject has not been well-studied nor well-reported on either in meteorological or conventional weather modification circles. It is very likely there are different varieties of elevated convection- generated clouds as well. The following hypothesis is from personal observation, pilot reports and radar data---definitely needing further study and refinement: 12