Key Parameters

  • Stability index on isobaric surfaces:
    Showalter index values below 3 units are expected.
  • Equivalent potential temperature at 850 hPa:
    Tongue of high values of ThetaE; deep convection develops in the area of maximal values.
  • Thermal Front Parameter (TFP):
    TFP associated with the gradually weakening Cold Front, and potential new front development ahead of the original Cold Front.


Stability index on isobaric surfaces

04 July 2005/00.00 UTC - Meteosat 8 IR10.8 image; yellow: Showalter index

Equivalent potential temperature at 850 hPa

04 July 2005/00.00 UTC - Meteosat 8 IR10.8 image; magenta: Equivalent potential temperature 850 hPa

Thermal Front Parameter (TFP)

04 July 2005/00.00 UTC - Meteosat 8 IR10.8 image; blue: thermal front parameter