26 May 2006 : 00 UTC | |
26 May 2006 : 12 UTC | |
26 May 2006 : 18 UTC | |
The vertical cross sections show that the cold front was intense during the whole time period. The prefrontal region as well as the cold front is characterised by an unstable stratification. Convergence within the front and in front of it extends up to the middle troposphere and ascending motion extends sometimes throughout the troposphere. Cold advection at low levels was intense. It was also present at middle and upper levels, in the first VCS.