Fully-fledged supercell on the way toward a brush with the far SE.
That should provide quite a light show as the evening daylight fades.
The MCS looks like being an entirely seperate convective system, just starting to develop in the region of La Rochelle from the looks of things.
A supercell could also form along the way, but those things prefer to be isolated from other convective systems, with a single focus area for uplifting becoming larger and larger, producing the exceptionally high cloud tops currently visible on satellite imagery, and hence the frenzied lightning activity.
Originally Posted by: Stormchaser