A night or so ago I was woken from deep sleep by the sound of very heavy rain on the roof. Now in these parts we are suffering from historically low ground water and been woken by rain was a welcome interlude. In the morning the sky was blue again and the lawns green with more than a few puddle about the extent of the rain was plain to see.. Here is the Environment agency website for a local stream showing how short and sharp the shower was. In real terms in that photo the stream went from where it is shown. A rise of about 6ft ie to bank top and back down again in under 24 hours.
The sad truth is such a short sharp shower does bugger all good . The same rain over a few days may well have done.