A level 2 was issued for NE Germany mainly for excessive precipitation and to the lesser extent for tornadoes, marginally large hail and severe wind gusts.
A level 2 was issued for parts of Serbia mainly for (very) large hail, severe wind gusts and to the lesser extent for excessive precipitation.
A level 1 was issued for Denmark E Germany, SW Poland, Czech Republic, Slovakia, Hungary, Austria, NE Italy, Slovenia, Croatia mainly for excessive precipitation and to the lesser extent for marginally large hail and severe wind gusts.
A long-wave trough over the Atlantic will experience a transition into a cut-off low centered over France by Tuesday evening. Strong mid-level flow is simulated especially over the southern flank of the low / trough, with windspeeds over 25 m/s at 500 hPa level. Closer to the surface, a cyclogenesis is simulated along the wavy frontal zone running from NW Germany towards W Czech Republic, Austria and Italy. Ahead of the front, a warm and moist airmass is observed with marginal to moderate degree of latent instability per 12 UTC Monday soundings. Models simulate numerous surface convergence zones associated with this frontal boundary, which will likely result in a scattered to widespread tstm initiation in a belt from Germany towards Serbia. This belt requires the most attention during the forecast period.