Meteorology 417 - Weekly Labs

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Week 3 - Conditional Symmetric Instability and High-amplitude Internal Gravity Waves


These phenomena/conditions can result in even smaller-scale wintertime weather features

CSI often allows in conjunction with frontogenetical forcing the formation of narrow bands of hea vier snow/rain which may be accompanied by thunder

  • COMET Module (Use and Misuse of CSI)
  • Dr. David Schultz CSI page
  • Conceptual model of trowal set up with band locations
  • Conceptual model of EPV/frontogenesis and band location s
  • Evidence of such bands in 1996 Iowa blizzard (UW-CIMSS)

    Occasionally in strong winter storms, wild pressure perturbations potentially accompanied by stro ng winds and enhanced snow/rain rates occur due to ducted high-amplitude internal gravity waves

  • Dr. Bruce Sutherland IGW page
  • Example of gravity waves in radar of snowstorm near DC in 2017

    2010 LAB 3 MAPS


  • Case 1 Sfc T/Td
  • Case 1 MSLP/thickness
  • Case 1 500 mb Z
  • Case 1 OAX sounding
  • Case 2 Sfc T/Td
  • Case 2 MSLP/thickness
  • Case 2 500 mb Z
  • Case 2 DVN sounding