“Scientists said the July 2016 rainstorm was a once-in-a-thousand-year event.........”But on Sunday it happened again: 7 to 9 inches of rain fell in the area, 10 miles west of Baltimore, and another torrent swept cars and trees through town.”
Actually, the second statement proves the first statement is wrong, and if the LONG geographic and natural history of Maryland is studied more, researches will likely find cycles of long spans of few such events, and cycles of bursts of multiple such events not far from each other, repeated and repeated over LONG history.