In the beginning of the song, you will notice it is starting to rain, but as the song progresses you will soon see that it is a storm you are stuck in; a mental one.
Just like anything in life, nothing can be stable all of the time and so, a storm also knows ups, downs, lefts, rights, backs and forwards unil at a certain moment it reaches its relative peak where you will be forced to stay a while and just wait it out.
So near the end, you will reach a climax that as fast as it came suddenly disappears into the distance.