Morphology of Thunderstorms and Hailstorms as Affected by Vertical Wind Shear

  1. Helmut Weickmann
  1. Chester W. Newton

Published Online: 18 MAR 2013

DOI: 10.1029/GM005p0339

Physics of Precipitation: Proceedings of the Cloud Physics Conference, Woods Hole, Massachusetts, June 3-5, 1959

Physics of Precipitation: Proceedings of the Cloud Physics Conference, Woods Hole, Massachusetts, June 3-5, 1959

How to Cite

Newton, C. W. (1960) Morphology of Thunderstorms and Hailstorms as Affected by Vertical Wind Shear, in Physics of Precipitation: Proceedings of the Cloud Physics Conference, Woods Hole, Massachusetts, June 3-5, 1959 (ed H. Weickmann), American Geophysical Union, Washington D. C.. doi: 10.1029/GM005p0339

Author Information

  1. Department of Meteorology., Chicago, Illinois

Publication History

  1. Published Online: 18 MAR 2013
  2. Published Print: 1 JAN 1960

Book Series:

  1. Geophysical Monograph Series

Book Series Editors:

  1. Waldo E. Smith

ISBN Information

Print ISBN: 9780875900056

Online ISBN: 9781118668931

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Keywords:

  • Cloud and ambient winds;
  • Effects of storm size;
  • Rainfall;
  • Thunderstorms and hailstorms;
  • Vertical pressure-gradient forces;
  • Vertical wind shear

Summary

Within convective clouds imbedded in a current with pronounced vertical shear, horizontal velocities are considerably different (1 to 10 m/sec or more) from environment winds, because of intense vertical transfer of momentum inside the cloud. Pressure fields induced by relative motions tend to promote new cloud growth on the downshear flank of a large convective system containing both updrafts and downdrafts. Physical analysis of the forces, with the aid of experimental analogy, indicates that the induced pressure field is quantitatively capable of triggering convection and that it significantly augments vertical accelerations in the newly formed cells. Possible influences on growth and distribution of large hail relative to the main body of a storm, are discussed with examples.