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<br />SEEDING A TYPICAL A1R-MASS STORM <br /> <br />20.000 FT. <br /> <br />~ <br /> <br /> <br />~r <br />r-- <br />~ <br /> <br />~ <br /> <br />30,000 FT. <br /> <br />16'20.000 FT. <br /> <br />CLOUD TOP SEEDING <br /> <br /> <br />'6,000 FT. <br />MSL <br /> <br />MATURE <br />STORM CELL <br /> <br />a,ooo FT. <br />MSL <br /> <br />CLOUD BASE <br />SEEDING <br /> <br />3.000 FT. <br />MSL <br /> <br />Fig. 2 <br /> <br />can be quite dangerous to seeding aircraft as well as crop and property since hail is capable of <br />being ejected from clouds at long distances in all directions. Occasionally hail is thrown into the <br />flight paths of seeding aircraft both at' cloud base and cloud top from these storms. Supercells <br />produce the most destructive tornadoes (on the Fujita Scale types F3 - F5), however, not all <br />supercells produce tornadoes; some estimates have indicated about one-quarter of all supercells <br />may be associated with tornado development. <br /> <br />Currently, with our WKWMP experiences in seeding supercells to prevent hail, there <br />appears to be an inadvertent effect helping to mitigate tornado formation within the seeded <br /> <br />9 <br />