SPC Mesoscale Analysis and Convective Parameters - NOAA

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Boundaries of Convective Interest • Synoptic Scale Fronts (thermal boundaries) - cold front, warm front, quasi-stationary front • Mesoscale Fronts - sea/lake breeze fronts, convective outflow boundaries, differential heating boundaries owing to clouds, fog, vegetation, and terrain • Dry Lines (moisture boundaries) • Pressure Trough Lines • Convergence Zones
Techniques to Help Identify Surface Boundaries Basic Principles of Mesoanalysis (after Fujita, Miller, etc.) • Incorporate all available data to find sub-synoptic features • Be careful ignoring data that may appear “not to fit” with surrounding stations ***This is very important*** Continuity – What/where boundaries were located on previous analysis -- Best accomplished by hourly analyses!!!
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: Observational Sources used in SPC M
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 and 22: Edwards/Thompson (SPC) Research Use
Page 23 and 24: Deep Layer Shear Deep layer shear =
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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