Atmospheric Water Management Standards Committee
Abstract: Hail, the product of vigorous deep convection, requires those same conditions that are conducive to the development of thunderstorms. These conditions include water vapor, especially in the low levels, instability (warm air in the low levels with cold air aloft), and a trigger mechanism: meteorological conditions that initiate storm development. Recent advances in science and technology have provided and continue to provide an increasing convective storm knowledge base. The physical concepts upon which hail suppression operations are based are subject to further refinement and modification as well, but are summarized in the following sections.
Subject Headings: Storms | Professional societies | Gases | Knowledge-based systems
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