TFP:
The TFP is at the leading side of the frontal cloud band and consequently too close to the line of growing Cbs. In ideal
cases the Cbs would be close to but still in front of the TFP. In this case an explanation can be found from the
thickness gradient.
Equivalent Thickness:
There is a typical zone of high thickness gradient within the frontal cloud band. In this case the line of growing Cbs lies in front of the highest gradient. This is in relatively good agreement with the ideal configuration. As the thickness gradient is also quite high in front of the Cold Front cloud band, this configuration can explain why the TFP is shifted eastwards into the line of Cbs.
Showalter Index:
The line of growing Cbs is mostly within Showalter values between 3 and 0 which indicates a high probability of
thunderstorms. This is in agreement with the conceptual model of Cbs developing at the leading edge of a frontal cloud
band.
ΘE 850 hPa:
The line of growing Cbs at the leading edge of the frontal cloud band is at the warm boundary but still within the
highest gradient of isolines of equivalent potential temperature. This is as it is expected in the ideal case.