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<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 /> <br />SEEDING A TYPICAL A1R-MASS STORM <br /> <br />30,QCIOFT. <br /> <br /> <br />~r' <br />.~ <br />~ <br /> <br />~ <br /> <br />20,000 FT, <br /> <br />~ <br /> <br />'6'20.000 ~T. <br /> <br />CLOUD TOP SEEDING <br /> <br />'6,000 FT. <br />""L <br /> <br />8.000 FT. <br />MSL <br />CLOUD BASE <br />SEEDING <br /> <br />3,000 FT. <br />MSL <br /> <br />Fig. 2 <br /> <br />The locations of updrafts important to the hail process here are along a line on its front <br />side, running from a few miles to many miles in length, Other times, best seeding may be found <br />just on one end of the line. Multi-celled lines can appear as a remnant of a weak squall line or as <br />part of a line of storms associated with fronts, surface troughs and thunderstorm outflows, <br /> <br />Under some conditions multi-celled storms are not linear-shaped; instead, they may <br />become very large, developing several new growth areas simultaneously with several distinct <br />"cores" growing embedded in and around the periphery of the cloud boundary while the cloud <br />system itself is in transition from being a relatively small severe storm into a large supercell, One <br />characteristic of a supercell is that at some point it exhibits a "right-tuming" motion relative to <br />the direction of the mean steering wind, <br /> <br />9 <br />