Die bei einem Orkantief mit ausgeprägter KF entstehen könnten, wobei ich diesen Begriff zum Ersten mal verwende. Aber das was ich hier verstehe, hört sich irgendwie danach an.
Overall we still deal with the baroclinic zone, which moved southeastwards, reaching Belgium and the Netherlands after 00Z. 700hPa temperatures will cool down a little bit between 00Z and 06Z which helps to weaken / lift mid-level cap somewhat. Nevertheless, capping will be too strong for deep convection and again low-topped convection along the SE-ward racing cold front will be the primary convective modus. 200-300 J/kg SBCAPE at lowest 3km are forecast and was shown persistently during the past few model runs. Speed max at 700hPa gets even stronger compared to the UK and reaches 50m/s after 00Z while attendant exit region overspreads the area of interest.
Forecast soundings show a favorable environment for tornadic thunderstorms as veering is strong, T-Td spread is small and convection should be surface based. 0-1km helicity above 150J/kg, 0-3km shear of 20-35m/s and winds at 850hPa above 30m/s point to a enhanced tornado and severe-damaging wind gust threat.
Again, dependant on the degree of convective activity along the cold front, a progressive-type LEWP squalline could evolve out of this environment with a tornado and severe wind gust risk, while racing southeastwards, reaching west-central Germany during the end of the forecast period.
Because of the persistent signals of nice shear / instability over this area a level-2 was issued.