...Central and eastern France, parts of Switzerland , western Germany , the Netherlands and Belgium....
Such as the Mediterranean, slowly eastward moving frontal boundary will be the main focus for TSTM development.... A series of upper-level disturbances will cross the area of interest ... Right now, there will be two regions with enhanced severe weather potential.
One will be over SE/E France / W/NW Switzerland, where kinematic parameters will be favorable for a few organized storms..... 25-30m/s DLS but weakened mid-level lapse rates favor a few severe wind gust reports....
Low LCLs and increasing LL shear ( enhanced SRH 0-1km ) due to a strengthening LL-jet over SE France should also pose a risk for possible tornadic storm activity.
The second one will be over the Netherlands, Belgium and extreme NW Germany.... Although DLS will be not quite intense compared to the other regions, kinematic parameters will be fine enough for an enhanced severe TSTM threat.... Main concern will be a broad sector of augmented LL shear , 150-200 m**2/s**2 SRH 0-1km values and low LCLs.
Strong-severe wind gusts and a few tornado reports will be possible.
GFS is one of the few models, indicating another round of TSTM development over central France during the night hours... Shear will be strong enough for storm organisation and area will be monitored for a possible organized line of storms, but confidence in this scenario is low right now.
Uitleg Wetterzentrale-kaarten (klikbaar 
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