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<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 />I <br /> <br />SEEDING A TYPICAL AIR-MASS STORM <br /> <br />3Q,OOOFT. <br /> <br /> <br />- <br /> <br />-<:' r <br /> <br />,.,-r- <br />~ <br /> <br />~ <br /> <br />20.000 FT. <br /> <br />~ <br /> <br /> <br />CLOUD TOP SEEDING <br /> <br />~) <br /> <br />~ <br />- 10. C <br /> <br />r ~r) <br /> <br />16,000 FT. <br />MSL <br /> <br />MATURE <br /> <br />8.000 FT. <br />MSL <br /> <br />CLOU DBASE <br />SEEDING <br /> <br />3,000 FT. <br />MSL <br /> <br />- <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 ofthe cloud boundary while the cloud <br />system itself is in transition from being a relatively small severe storm into a large supercell. <br /> <br />9 <br />