Dexter Fowler had to deal with his own personal rain cloud while making a catch
In the world of Winnie-the-Pooh, Eeyore was the lovable-but-perpetually-downcast stuffed donkey who always had his own literal storm cloud above his head (for metaphoric purposes, of course).
The inclement weather outside the ballpark wasn't an issue, except for the exact area in which Fowler was standing for
As a result, he had to combat his own personal shower in pursuit of a fly ball:
Sure, one can imagine this was a bit strange for Fowler, who had an obstacle nobody else seemed to have -- but it could have been worse!