Richards teaches "the whole earth" was flooded in Noah's day.
George F. Richards, Conference Report (October 1947): 57
The history of the antediluvians furnishes us with an impressive example of the serious consequences of sin and rejecting the gospel.
Noah preached to that people 120 years. They rejected the prophet and his message and became a very wicked people and morally corrupt.
The penalty inflicted upon them was, in part, that of drowning by a flood that covered the whole earth. The death penalty tells but a small part of the story of what befell them on account of their wickedness.