After large-scale differences were shown to exist across Germany not
only in terms of convective activity, but also in terms of hail track characteristics, we examined whether systematic differences in the preconvective conditions can be found on the hail days identified. Although
hailstorms are local-scale weather phenomena, they require specific ambient conditions at the mesoscale: atmospheric instability, low-level
moisture, and a trigger mechanism that lifts the parcels to the level of
free convection