How Broadway’s SFX designers make it rain (and snow) on stage

Over the past few decades, CGI has allowed directors to put virtually anything they can imagine onto the big screen. But in the world of theater, practical effects still rule supreme. 

So how do these special effects wizards make it snow, rain, and gust inside the confines of a theater, where real live audiences are sitting just feet away? And what are the challenges to dumping more than 100 gallons of water indoors, or coating the stage in slippery fake snow? 

We tour a Brooklyn warehouse that houses the secrets behind Broadway’s wildest special effects, wher...