sweep down on
sweep down on (someone or something)
To rush, flow, or pour down on someone or something. A great flood swept down on the small town after the dam burst. A frigid wind swept down on us from the summit, chilling us to our bones.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
sweep down on someone or something
to flow or rush down onto someone or something. The storm swept down on the campers. A flash flood swept down on the streambed.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.