Really big thunderstorms. We haven't had one in ages and just had two in quick succession and its brewing up for a third.
And froggies. I just went out when the rain eased from torrential to merely heavy to assess the garden damage (it is extensive

) and found this big
frog sitting right by the doorstep. I had to chase him off under the comfrey so he would be safe, and would find those pesky snails to eat.