Abstract: A removable storm shield, and method of attaching a removable storm shield, to protect an opening in the wall of a building structure from damage caused as a result of foul weather conditions or other destructive acts. The storm shield includes a convex panel having a centrally located portion with a substantially singularly convex cross-section that resists exterior forces and a flat peripheral portion for stabilizing surface contact with the exterior wall, a plurality of fasteners to attach the convex panel to the wall, and a plurality of slots defined in the flat portion through which each fastener is slidably attached to the convex panel.