My impression is that the meteors are still coming, because the Barn didn't just fade away like it usually does. It imploded after Nathan shot Howard, which caused everything to go haywire. So now the Barn has been destroyed or damaged, and the meteors are still on the way . . . .
And I'm not sure Howard is in the Barn now. He was shot outside the Barn, then just sort of dissolved into nothingness. For all we know, he's gone for good.