Case Study: 29 July 1997

• Introduction and Conceptual Models for 29 July 1997/06.00 UTC
  • Overview of satellite features and conceptual models
  • Frontal diagnosis
  • Diagnosis of the western cloud feature - Conceptual model "Front Intensification by Jet Crossing"
  • Diagnosis of the eastern cloud feature - Conceptual models "Convergence Cloudiness" and "Cumulonimbus (Cb) and Mesoscale Convective System (MCS)"
  • Diagnosis for 06.00 UTC with help of vertical cross sections
  • Very Short Range Forecast (VSRF) till 18.00 UTC
• Conceptual Models - Diagnosis for 29 July 1997/12.00 UTC
  • Satellite features and frontal diagnosis for 12.00 UTC
  • The western cloud system
  • The eastern cloud system
  • Instability 12.00 UTC
  • Diagnosis for 12.00 UTC with help of vertical cross sections
• Conceptual Models - Diagnosis for 29 July 1997/18.00 UTC
  • Satellite features and frontal diagnosis for 18.00 UTC
  • Upper level features
  • Instability 18.00 UTC
  • Diagnosis for 18.00 UTC with help of vertical cross sections
  • Summary

29 July 1997 - The Eastern Cloud System

29 July 1997/12.00 UTC - Meteosat IR image; red: divergence 850 hPa, blue: divergence 700 hPa, green: wind vectors 850 hPa

The eastern, relatively stationary cloud system is still accompanied by convergence in a thick layer (divergence at 850 hPa - red, divergence at 700 hPa - blue) and there is still the confluence of the wind vectors in the low layer (compare Diagnosis of the eastern cloud feature - Conceptual models "Convergence Cloudiness" and "Cumulonimbus (Cb) and Mesoscale Convective System (MCS)" ).