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<br />EVALUATION OF THE WESTERN KANSAS <br />WEATHER MODIFICATION PROGRAM <br /> <br />Table of Contents <br /> <br />Pa~e <br /> <br />INTRODUCTION AND SUMMARY .................... <br /> <br />. .. 1 <br /> <br />DESCRIPTION OF WEATHER MODIFICATION ACTIVITIES <br />IN OR NEAR WESTERN KANSAS .............................. 3 <br /> <br />SUMMARY OF PREVIOUS EVALUATIONS ON PRECIPITATION <br /> <br />ENHANCEMENT ......................................... . 4 <br /> <br />First Evaluation ........................................ 4 <br />Second Evaluation ....................................... 4 <br />Third Evaluation ................;............. ~ . . . . . . . . .. 5 <br />Fourth Evaluation ....................................... 6 <br />Fifth Evaluation ........................................ 7 <br /> <br />EVALUATION OF THE PRECIPITATION COMPONENT ............... 9 <br /> <br />Selection of an Operational Time Period During Which the <br />Western Kansas Weather MOdification Program Was Ongoing ........... 9 <br />Selection of a Historical Time Period Prior to Operation <br />of the Western Kansas Weather Modification Program ........ . . . . . . .. 9 <br /> <br />Study Areas .,........................................... 9 <br />Seasonal Precipitation Data ..... . . . . . . . . . . . . . . . . . . . . . . . . . . " 10 <br />Analysis of Seasonal Precipitation Data ......................... 10 <br />Precipitation Evaluation Results .............................. 11 <br />Economic Significance ................................... 11 <br /> <br />EV ALUA TION OF THE HAll. SUPPRESSION COMPONENT ............ 13 <br /> <br />Selection of an Operational Time PeriOd During Which the <br />Western Kansas Weather Modification Program Was Ongoing .......... 13 <br />Selection of a Historical Time Period Prior to Operation <br />of the Western Kansas Weather Modification Program ............ . " 13 <br /> <br />Study Areas .......................................... 13 <br />Crop Hail Insurance Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . " 14 <br />Analysis of Hail Suppression Data ............................ 14 <br />Hail Suppression Evaluation Results ........................... 15 <br />Economic Significance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 15 <br />