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<br />ment weather data including su:rface and Ulppe;r air weather data~ synoptic <br />surface and upper level maps and wind data from rawinsondes and pibals. <br />Also available would be radar data, half~.hourly satellite maps from the <br />NWS and other forecasting aids to ass'ist in selecting storm periods <br />suitable for modification. With regard to safety, the contractor's <br />continuous monitoring of incoming weather data allows for any necessary <br />adjustments or termination in the seeding operation. There would also be <br />liaison between the meteorological control office and the program <br />participants and field mainten.ance technicians located near the project <br />areas as to any developing conditions thc:Lt might warrant a change in the <br />operation. <br /> <br />The North Dakota Cloud Modification Program was carried out in three <br />areas of the State. As noted on the Initial Reports, "Each Field Office <br />will be assisted in operations by the Forecast Office in acquiring the <br />latest information pertaining to weather advisories and warnings. <br /> <br /> <br />"Safety procedures and environmental guidelines have been included in <br />the operational program by use of NWS data pertaining to flood forecasts <br />and local weather conditions, etc. Each county authority has also been <br />empowered with the ability to stop operations for any given period of <br />time. The director also has the power to enjoin seeding activities if it <br />is determined that the public or environmental health is in jeopardy." <br /> <br />For an operational cloud seeding progrcm in southeastern Illinois the <br />following statements were submitted with the Initial Report. <br /> <br />~ <br /> <br />"The National Weather Service in Illinois is cooperating with the overall. <br />project to the extent of providing meteorological information available <br />from various stations. The project supervisor for the contractor will <br />maintain a once-each-three-hour surveillance of meteorological data avail- <br />able from NWS Sources during the operational periods. Visual observations <br />will be made at the radar site. The project radar system will be located <br />at the Williamson County Airport (Marion), Illinois, and the system will <br />be utilized for data acquisition and recording before, during, and after <br />all seeding events. <br /> <br />, ~ <br /> <br />"The relationship between meteorological conditions and aircraft launch <br />decisions provide primary guidelines for operations. If, and when, <br />precipitation amounts are excessive or severe storms indicate a potential <br />threat to people within the operational .:irea, the cloud seeding program <br />has a built-in. shut-down procedure. Personnel at the sponsor level are <br />interfaced with the program for operational decision processes on a daily <br />basis. The program is designed primarily for benefit of the agricultural <br />communi ty . tl <br /> <br />~ ' <br /> <br /> <br />l <br />I" <br />" <br />i' <br /> <br />11 <br /> <br />t <br />