Ironically, here in the Wrexham area it has been raining for around 6 hours, torrential for the last 3 hours, with a fair rivulet running down our hill which may well flood houses further down, yet we are not even in any of the warning areas, despite clear radar indication that we would get a fair share of downpours. Maybe it's because of the lack of thunder activity, either expected or received (we never usually do anyway, one thunderstorm in 4 years)?
Still warranted a warning!