In the past 12 months I have lost a Ride, a Snap Lock, and an iQ Tour.  They all cracked all the way around the ball.  They are stored in my finished, climate controlled basement on a ball rack when not in use.  I do not leave gear in the car overnite.

WTF is with all the Storm stuff randomly cracking?

I have not lost a ball in 4 years. I store them in the basement on a wood rack. The difference is I store them with the holes down. I don't understand why it works but it works for me. 

Unfortunately, the only equipment I've had crack and there have been a lot of them are balls poured at the old Columbia site in San Antonio.  2 manufacturers not just 1.

San Antonio and its brutal summers does have a bit of a rep when it comes to balls cracking.

Had my first one crack since coming back several years ago.  My 16# Hy-Road Pearl.  Cracked from ring finger hole down to balance hole (hadn't plugged yet) and from middle finger hole half way around the ball straight left.  Hadn't used it in quite some time but rotated it fairly recently I believe.  Looks like Storm balls have to be climate controlled (or else didn't like the wood rack, but ones in house on wood rack and knock on wood for them).  Had no problems whatsoever with older Brunswick and Visionary in garage.  Oh well if had to be one my Storms glad it was that one.  Never did match up and buying it in 16# was a mistake.

(edit:  bought in early October 2017, limited one year warranty indeed, at least its a ball still for sale even if I doubt I ever replace)

Keep unused balls in plastic bag.

I do with all the ones I store in boxes and hardly use.  Guess going to start putting ones on racks in clear plastic bags as well.  Mild pain in the rear to put balls in and out as I use them (big on throwing as much of my stuff as I can) but cracked balls is a sad sight.  Thanks.

I`m dubious to the benefit of keeping balls in plastic bags.

Can it hurt?

All of mine that have cracked were not in plastic bags but most occurred before I thought of doing that.  Since then, like in BowlingForDonuts case, ones that I had kept out for near future use or that I was either lazy or forgot to, are the ones that cracked.  Others kept next to them in plastic bags have not cracked yet (and I checked them when I found the cracked one).  Not enough of a sample size but my own personal experience.

Recently I read here that one of the bowling ball companies was recommending keeping them in plastic bags but we started posting about doing this years ago on this site.

I use 900 Global, don't bevel my fingers, and keep them on closet door I placed under my workbench and use the decorative inlay on the door to keep them in place and rotate them.

No cracking here.

But I am getting legit ball racks this weekend, so that's exciting!

While we all can agree (and have in the past here) that there is no scientific proof as to what causes the cracking, I also attest, that I’ve also had several balls crack (storm, Roto, ebo).

Since I have kept my balls in plastic bags, not 1 CRACK since then, in climate controlled rooms.  Physics 101 can sure do things to the mind that’s for sure. 

I suspect that I own more bowling balls than most here. I have a bedroom that that is used for bowling balls and golf clubs, with golf clubs being one bag and a single set. I have metal shelving that can hold 150+ balls and those are full. I have two wooden ball racks that hold 25 balls each, those are full of drilled balls. I have quite a few sitting on ball cups on the floor, probably another 30+. Not one ball in this room has cracked. When I bring my equipment home from league or tournaments, I leave the bag in my living room and sometimes have a ball or two sitting on carpet for a day or so. I have had two balls crack while sitting on the carpet in the living room, therefore, carpet makes balls crack.