This is very detailed and seems emphatic that extremely heavy rain will occur.
what I’m probably uneducated about is this recent spate of flood watches . I always thought we were “watching” for an enhanced probability, but not certainty, of heavy rain for the forecast area included in the watch.
Seems like the feedback I got lately is if a 4 mile by 4 mile area gets flooding rain then the watch for a much much larger area was confirmed?