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City Airport, Inagalls and Cimarron. Four planes were scrambled, Seeding began at 11:27 p.m. near Garden City. Seeding continued on it northeast into eastern Finney County, before ending at 11:59 p.m. A second plane was seeding southeast of Ingalls at 11:40 p.m. and ,continued on it until 11:47 p,m., ending in northeast Gray County. One flight, not seeding, was ended at 11:37 p.m. due to generally low radar intensities; another at 11: 57 p.m. The two seeding flights were ended at 11:59 p.m. and 12:05 a.m., respectively. JULY 12th - OPERATIONAL DAY #41: Shortly before 4 a.m. an isolated severe thunderstorm formed in southeast Scott County. Southeasterly low-level winds and a strong inversion trapped moisture in a very shallow layer causing low cloud ceilings and visibilities to form which kept planes from flying. The Scott County storm moved'into northern Finney and collapsed by 4:45 a.m. Around 9 a.m. another severe storm built near Coolidge but it collapsed by 9:35 a.m. Again, c~oud bases were too low to launch aircraft. Later, at 6:35 p.m, a large area of storms in Colorado had fo,rmed behind the cold frontal system which l"~',.~rl t1:t.. ::eg5o!'. in t.he morning earlier. Upslope winds were. becoming increas~ngly we~l- developed. The area of storms was or~ented NE-5W with ~ts lead~ng edge northwest of Wallace County. Three cloud base planes and the cloud top ,plane were initially scrambled. However, the cloud top plane was unable to work again due to radar failure. Seeding began in NW Wallace County at 7~22 p.m, Fortunately, the severe storm remained west of Wallace and, inexplicably, moved southward parallel to the state line, although other storms north of it moved northeast. As the area of storms neared Kansas, it became oriented into a more well-defined, broad line oriented NE- SW. Two of the planes diverted from Wallace County toward Hamilton and Stanton counties anticipating those areas soon would be the focus of seeding. One plane remained patrolling the storm near Wallace County but moved southward at 8:06 p.m. to assist possible seeding around, Hamilton and Stanton counties. The two remaining cloud base planes, were scrambled at 8110 p.m. Two planes began seeding for hail in southwest Stanton County at 8:35 p.m., two more in northwest Stanton at 8:38 and 8:40 p.m., respectively. The last plane began in Stanton at 9:15 p.m. At that time seeding tracks were north-south across both Morton and Stanton , c,?untieeL .One plane had t.o land for fuel at 9~30 p,m. As the large l~ne moved eastward into Kansas, severe storm intensities within it Degan to disappear. The other four ended seeding and returned to their bases at 9: 37, 9: 52 and 10: 10 p.m. The last plane ended seeding at 10:16 p.m. then flew northward where it appeared new severe storms were developing along an E-W oriented line north of Wallace County. Two other planes were scrambled at 10:27 p.m.. Four base seeders eventually worked east-west across northern Wallace the first at 10:54 p.m., others at 10:57, 10:59 and 11:10 p.m.' respectively. Radar intensities remained low and seeding ended at 11:17 p.m.---updrafts also were significantly lower. After brief patrolling, ,all flights were terminated. ~"c., ;(fl. ~~ Curtis D. Smith Program Manager, ret_ _ ~_ _. --