No standard policy except to leave everything up to the umpires to do everything possible to get the game in. There could be a lengthy delay waiting for the storms to pass but generally they will finish the game unless there is steady ran caused by a weather system moving through..

You may have noticed my earlier post about meeting one hour after the end of the game should it go late That was made with such things as thunderstorms (and the Yankee bullpen ) in mind.