Hmm, don’t know.
I know some games have gotten cancelled or moved when this sort of thing happens. One time in the 90s, IIRC, the Red Sox were supposed to play Seattle at the Kingdome but there was a roof collapse so the games were shifted to Fenway Park—and tickets were only $10, general admission—get there early for best seating.
I went to one of those games and I think the Mariners had a player who had just started out...Alex Rodrigues...
http://en.wikipedia.org/wiki/Metrodome
The Metrodome, or Homerdome as some called it. The Twins now play at Target Field.
>>The Hubert H. Humphrey Metrodome, commonly called the Metrodome, is a domed sports stadium in downtown Minneapolis, Minnesota, United States. The football playing field has been known as Mall of America Field at Hubert H. Humphrey Metrodome since October 2009.[3] Opened in 1982, it replaced Metropolitan Stadium, which was on the current site of the Mall of America in Bloomington and Memorial Stadium on the University of Minnesota campus. The Metrodome is home to the National Football League’s Minnesota Vikings...The stadium is 31 years old, making it the ninth oldest stadium in the National Football League
>>The stadium is well known for its fiberglass fabric roof that is self-supported by air-pressure. The Metrodome was also the second major sports facility to have a domed roof supported completely by air, the first being the Pontiac Silverdome. The Metrodome is similar in design to BC Place Stadium and the RCA Dome. The Metrodome suffered a collapse of its roof on December 12, 2010 because of the accumulation of over 15 inches of snow overnight
>>On November 19, 1981, a rapid accumulation of over a foot of snow caused the roof to collapse, requiring it to be re-inflated. It deflated the following winter on December 30, 1982, again because of a tear caused by heavy snow. This was four days before the Vikings played the Dallas Cowboys in the last regular season game of the 1982 NFL season. That same winter, on April 14, 1983, the Metrodome roof deflated because of a tear caused by heavy snow and the scheduled Twins’ game with the California Angels was postponed. It was the only postponement in Metrodome history until 2007