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<br />. <br /> <br />mid-level (altocumulus or altostratus) or lower-level (stratus) cloud <br /> <br />deck. A Potential Seeding Period, on the other hand, coincided with the <br /> <br />time period' when the operational project seeding criteria were met in <br /> <br />the research area. Notations of such periods of "seedability" for the <br /> <br />Tushar Mtns area were made by NAWC personnel- in Salt Lake City at the <br /> <br />same time that they determined whether seedab le or not-seedab le con- <br /> <br />ditions existed ~n the operational project area to the southwest in <br /> <br />. <br /> <br />. <br /> <br />~lashington County. <br /> <br />In 1985, because of wet conditions, a decision had <br /> <br />. <br /> <br />been made not to seed in the research area even if there was a Potential <br /> <br />Seeding Period. A Potential Seeding Period could be longer or shorter <br /> <br />than a STORM but usually was shorter because more substantial clouds are <br /> <br />generally required for seeding than for research. The existence of a <br /> <br />STORM was jointly determined by the research program Field Director and <br /> <br />the Field Scientist. Neither of them was involved in the determination <br /> <br />. <br /> <br />. <br /> <br />of a Potential Seeding Period. <br /> <br />That was the responsibility of North <br /> <br />American Weather Consultants personnel in Salt Lake City who were con- <br /> <br />ducting the operational seeding project. <br /> <br />In v~ew of the potentially simultaneous STORMS and Potential <br /> <br />Seeding Periods some kinds of communication between operational project <br /> <br />personnel ~n Salt Lake City and research program personnel in Beaver <br /> <br />~rerepurposely restricted. There was no communication as to' whether <br /> <br />c:louds in the research area did or did not meet the operational project <br /> <br />~. <br /> <br />'. <br /> <br />seeding criteria. <br /> <br />Weather information and forecasts were provided to <br /> <br />. <br /> <br />the research program from the NAWC operational project control center ~n <br /> <br />Salt Lake City, however, and this was an important cooperative feature <br /> <br />of the operational project and research program. The information was <br /> <br />provided without comment as to any implications for Potential Seeding <br /> <br />-- <br /> <br />-16- <br /> <br />. <br />