For “Rebbe stories” there are dozens of books written. Many of those tales, had they been read by the supposed heroes, would raise the eyebrows of those very hero. There are countless maaselach of people performing tremendous miracles deep in the forests, in total solitude. Sure, they were great men, and COULD have possibly done such, but they were also exceedingly humble, and didn’t brag about their accomplishments. So who, should be asked, is the source? The trees? The wind? Did the malochim go around telling others? The Satmar Rov Z”L had a very nice moshol regarding this phenomenon of latter day holy men greatly outperforming the Neviim in miracles.
It isn’t that the story is impossible, it often is the impossibility of anyone knowing of it happening.