it could come cannonballing down from the sky

I'm not usually into omens, good or bad, but I did see a rainbow on my way into work today. I thought this could mean two things: 1) it's going to be a good day, or 2) I'll be driving through rain pretty soon.

#2 already came true, but I'm hoping for #1 as well.

"something's coming
I don't know
what it is
but it is
gonna be great"