A tongue of humid BL air (mixing ratio around 12 g/kg) stretches all the way from central Poland and the Baltic states to Finland. In the northern part of this area the resulting CAPE values of about 1000 J/kg can overlap with 15 to 20 m/s of deep layer shear. This has already resulted in the formation of a squall line which shows a bowing segment over southern Finland. A short wave trough moving to the northeast leads to strong lift mechanism, especially due to an upper level jet whose right entrance region moves right over southern Finland.
Current thinking is that the bowing line will further propagate to the northeast for the next hours having the risk for severe wind gusts which is also supported by a mid-level jet (850 hPa). When the cold pool holds its strength and the bowing of the line is preserved even damaging winds are possible. In addition excessive precipitation events are possible given ppws of up to 40 mm. Furthermore, DLS and CAPE values also point to a threat for large hail. Finally, having high values of LLS (>10 m/s) and enhanced values of SRH, a tornado cannot be ruled out.