Edit:
Just realized the correct name for the tree is actually maple.
False friend caused mistake because its name is "Ahorn" in German.
Keeping the heading as it is, because it is funny, although it might trigger the Canadians (sorry, dudes!).
What caused the rapid fall? Wind?
We had a weather change from very warm and sunny to colder and rainy over night.
That might have played a role here.