Delamination is a slightly raised area of the outer skin, usually caused by moisture in the sidewalls that causes the glue to deteriorate and loosen the fiberglass skin. It's just a cosmetic problem unless very extensive in size.
There is a related concern, though. Moisture in the sidewall can also result in dry rot of the luan backing and the wooden structural members used in some rigs. Most newer RVs have metal frames, but I don't know about the 97 Storm.
2004 American Tradition; 2014 Buick LaCRosse
Homebase in the Ocala Nat'l Forest near Ocala, FL