High Resolution Numerical Simulations of the Tornadic Region Within a Mature Thunderstorm

  • J. B. Klemp
  • R. Rotunno
Part of the Topics in Atmospheric and Oceanographic Sciences book series (TATM)


Recent multiple Doppler radar observations of supercell thunderstorms have documented that a particular dynamic structure consistently develops when a storm enters its tornadic phase. This structure is characterized by a downdraft outflow which wraps around the center of storm circulation at low levels and an associated distortion from a single cell to a two-cell up-draft structure (Brandes, 1978; Lemon and Doswell, 1979). In this study we investigate the evolution of a storm’s tornadic phase through high resolution numerical simulations initiated within the central portion of a 3D cloud model mature thunderstorm.


Positive Vorticity Vertical Vorticity Convergence Line Gust Front Horizontal Vorticity 
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  1. Brandes, E. A. 1977 Gust front evolution and tornado genesis as viewed by Doppler radar. J. Appl. Meteor., 16, 333–338CrossRefADSGoogle Scholar
  2. Brandes, E. A. 1981 Finestructure of the Del City-Edmond tornado mesocirculation. Mon. Wea. Rev., 109, 635–647CrossRefADSGoogle Scholar
  3. Browning, K. A. 1964 Airflow and precipitation trajectories within severe local storms which travel to the right of the winds. J. Atmos. Sci., 21. 634–639CrossRefADSGoogle Scholar
  4. Browning, K. A. 1968 The organization of severe local storms. Weather, 23, 429–434Google Scholar
  5. Danielson, E. F. 1975 A conceptual theory of tornadogenesis based on macro, meso-and microscale processes. Preprints Ninth Conf. on Severe Local Storms. Norman, Amer. Meteor. Soc., 376–383Google Scholar
  6. Golden, J. H. 1976 Comparison of Union City tornado life cycle with Florida keys waterspout life cycle. NOAA Tech Memo ERL NSSL-80, 135–140Google Scholar
  7. Huff, F. A., Hiser, H. W., and Bigler, S. G. 1954 Study of an Illinois tornado using radar, synoptic weather and field survey data. State of Illinois Water Survey Div., 73 ppGoogle Scholar
  8. Klemp, J. B. and Wilhelmson, R. B. 1978a The simulation of three-dimensional convective storm dynamics. J. Atmos. Sci., 35, 1070–1096CrossRefADSGoogle Scholar
  9. Klemp, J. B. and Wilhelmson, R. B. 1978b Simulations of right-and left-moving storms produced through storm splitting. J. Atmos. Sci., 35, 1097–1110CrossRefADSGoogle Scholar
  10. Klemp, J. B., Wilhelmson, R. B. and Ray, P. S. 1981 Observed and numerically simulated structure of a mature supercell thunderstorm. To appear in J. Atmos. Sci Google Scholar
  11. Lemon, L. R. and Doswell, C. A., III 1979 Severe thunderstorm evolution and mesocyclone structure as related to tornado-genesis. Mon. Wea. Rev., 107, 1184–1197CrossRefADSGoogle Scholar
  12. Phillips, N. A. and Shukla J. 1973 On the strategy of combining coarse and fine grid meshes in numerical weather prediction. J. Appl. Meteor., 12, 763–770CrossRefADSGoogle Scholar
  13. Ray, P. S., Johnson, B. C., Johnson, K. W., Bradberry, J. S., Stephens, J. J., Wagner, K. K., Wilhelmson, R. B. and Klemp, J. B. 1981 The morphology of several tornadic storms on 20 May 1977. To appear in J. Atmos. Sci Google Scholar
  14. Rotunno, R. 1981 Numerical simulation pertaining to the multiple vortex phenomenon. Proceedings of Joint IUTAM/IUGG Symposium on intense atmospheric vortices, Reading, England 14-17 July 1981Google Scholar
  15. Schlesinger, R. E. 197 8 A three-dimensional numerical model of an isolated thunderstorm: Part I. Comparative experiments for variable ambient wind shear. J. Atmos. Sci., 35, 691–713ADSMathSciNetGoogle Scholar
  16. Thorpe, A. J. and Miller, M. J. 197 8 Numerical simulations showing the role of the downdraught in cumulonimbus motion and splitting. Quart. J. Roy. Meteor. Soc., 104, 873–893CrossRefADSGoogle Scholar
  17. Wilhelmson, R. B. and Klemp, J. B. 1978 A numerical study of storm splitting that leads to long-lived storms. J. Atmos. Sci., 35, 1975–1986CrossRefADSGoogle Scholar

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© Springer-Verlag Berlin Heidelberg 1982

Authors and Affiliations

  • J. B. Klemp
  • R. Rotunno

There are no affiliations available

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