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Severe Weather Parameters Analysis at SPC MSU - November 5, 2003

This report by Jeff Craven from NWS Jackson, MS, delves into modern severe weather parameters recorded at Mississippi State University on November 5, 2003. It examines various instability indicators such as Mean Layer CAPE, lapse rates, and DCAPE, as well as low-level moisture conditions and cloud base heights. Additionally, key metrics like vertical wind shear (0-6 km and 0-1 km) and combinations of parameters including MLLCL height and shear values are analyzed. The findings contribute to a deeper understanding of severe weather forecasting.

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Severe Weather Parameters Analysis at SPC MSU - November 5, 2003

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  1. Modern Severe Weather Parameters at SPC MSU November 5, 2003 Jeff Craven, NWS Jackson MS

  2. Instability Parameters 100 mb Mean Layer CAPE, Lapse Rates, DCAPE MSU Nov 5, 2003 NWS Jackson MS

  3. Low Level Moisture/Cloud Bases 100 mb Mean Layer LCL height MSU Nov 5, 2003 NWS Jackson MS

  4. Vertical Wind “Shear” 0-6 km and 0-1 km “bulk” shear MSU Nov 5, 2003 NWS Jackson MS

  5. Parameter Combinations MLLCL height versus 0-1 km shear MSU Nov 5, 2003 NWS Jackson MS

  6. Parameter Combinations Product of MLCAPE and 0-6 km shear (Craven SigSvr) (Units in m3 s-3) MSU Nov 5, 2003 NWS Jackson MS

  7. Parameter Combinations Strong Tornado Parameter (an alternative to Thompson’s Significant Tornado Parameter) MSU Nov 5, 2003 NWS Jackson MS

  8. Parameter Combinations Strong Tornado Parameter MLCAPE * 0-1km shear * 0-6 km shear _______________________________ MLLCL height * DCAPE (Units in m s-2 acceleration?) MSU Nov 5, 2003 NWS Jackson MS

  9. Parameter Combinations Supercell Composite Parameter Hart and Thompson, SPC MUCAPE * 0-3km SRH * BRN shear ______________________________ 1000 J/kg * 100 m2/s2 * 40 m2/s2 MSU Nov 5, 2003 NWS Jackson MS

  10. Parameter Combinations Significant Tornado Parameter Thompson, SPC MLCAPE * 0-1km SRH * 0-6 km shear * (MLLCL – 2000 m) ________________________________________________ 1000 J/kg * 100 m2/s2 * 20 m/s * 1500 m MSU Nov 5, 2003 NWS Jackson MS

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