Hail Growth Processes in an Alberta Hailstorm

Authors

  • Dennis J Musil Institute of Atmospheric Sciences South Dakota School of Mines and Technology Rapid City, South Dakota
  • Paul L Smith Institute of Atmospheric Sciences South Dakota School of Mines and Technology Rapid City, South Dakota

Abstract

A series of observations inside an Alberta hailstorm was made with the T-28 armored research aircraft during the summer 1985, as part of the Alberta Hail Project. An analysis of some of the characteristics of the hail size distributions in relation to other T-28 measurements showed many features similar to past T-28 observations. Most of the hail observed was falling through the -17°C penetration level, even in the updrafts. A preliminary assessment of the hail growth mechanisms in this storm shows that most of the hailstones were in a dry growth regime at the penetration level, but likely in wet growth lower down in the storm. Recirculation of hydrometeors probably played a significant role in the hail development.

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Scientific Papers