SPC Mesoscale Analysis and Convective Parameters - NOAA

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Craven/Brooks 0-6km Vector Shear 0-6 km AGL Vector Shear Large overlap between thunder/severe, better discrimination between severe <strong>and</strong> sig. severe (especially sig. tornadoes) Seasonal Variation
Deep Layer Shear Deep layer shear = 0-6 km shear vector 40+ kt suggests -- if storms develop -- supercells are likely 30-40 kt -- supercells also possible if environment is very or extremely unstable About 15-20 kt shear needed for organized convection with mid level winds at least 25 kt
Page 1 and 2: SPC Mesoscale Analysis and Convecti
Page 3 and 4: Why do Surface Mesoanalysis? • Fo
Page 5 and 6: Use Computer and Forecaster Analyse
Page 7 and 8: Observational Sources used in SPC M
Page 9 and 10: Techniques to Help Identify Surface
Page 11 and 12: Mesoanalysis Pressure/Wind Data •
Page 13 and 14: Severe Weather Forecast Tools
Page 15 and 16: SBCAPE
Page 17 and 18: 100 mb MLCAPE
Page 19 and 20: Research Proximity Soundings ** Pro
Page 21: Edwards/Thompson (SPC) Research Use
Page 25 and 26: Craven/Brooks 0-1km Vector Shear 0-
Page 27 and 28: 0-1 km SRH
Page 29 and 30: Thompson/Edwards MLLCL Heights
Page 31 and 32: Craven/Brooks Findings • MLCAPE a
Page 33 and 34: SIMILAR SOUNDINGS - DIFFERENT CONVE
Page 35 and 36: Supercell Composite Parameter (SCP)
Page 37 and 38: Example of SCP Graphic
Page 39 and 40: STP Equation STP = (MLCAPE/1000 J/k
Page 41 and 42: Example of STP
Page 43: Research Summary •Proximity sound

SPC Mesoscale Analysis and Convective Parameters - NOAA

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