Drizzly showers here now.
It seems we have two areas of interest today:
1) home grown downpours this afternoon which can occur anywhere
2) Massive thunderstorms coming from France (they are developing in Brittany as we speak). It looks like western and southwestern parts of our region have more chance to get these as the southeasterly flow starts to develop preventing them from reaching the whole region.
The 6z gfs shows the second area reaching Manchester but that might be optimistic.
Will tomorrow's rain coming from the south have some thunder in it? Probably not but either way today is the interesting day.