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<br />conditions to assure the operational success of the seeding <br />equipment with minimal maintenance problems. <br /> <br />d. Opportunity Forecasting and Operational Suspension Criteria - <br />The program operational seeding period for each winter season <br />is proposed to begin on November 10 and end on April 25. The <br />proposed starting date would take into consideration the clima- <br />tologically higher frequency of precipitation episodes moving <br />through Colorado during the second two-thirds of November and the <br />climatologically more favorable colder cloud system temperat:ures <br />and seedable winter cloud types observed after the proposed <br />starting date. This beginning date would eliminate seeding during <br />most of the big game season. The proposed ending date represents <br />an average date after which the observed cloud types over Colorado's <br />mountains are more cumuliform than the more strataform type ob- <br />served during the winter. The springtime cumuliform clouds also <br />have a more spotty precipitation pattern compared to the fai.rly <br />uniform large regional precipitation pattern of the winter-type <br />weather systems. <br />An operational seeding program of this scope would require <br />that a weather forecasting facility located within Colorado be a <br />permanent part of the operational field office. This weather <br />forecasting facility should be manned with two full-time meteor- <br />ologists experienced in weather modification operations and <br />possibly a third alternate meteorologist so as to provide essen- <br />tially a 24-hour coverage of the weather during this program's <br />operational period. <br />The weather forecasting facilities should include a full <br />compliment of weather and cloud satellite data equipment along <br />with in-office read-out capabilities for additional meteorological <br />observations that are a part of this program's data network. <br />In identifying cloud conditions that are suitable to seed <br />over the project area, a minimum period of six hours or more of <br />continuous seedable weather conditions is recommended. Because <br />of the speed of an average weather system moving across Colorado, <br />most seeding operations are expected to have an average duration <br /> <br />-30- <br /> <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />