original: The inner eyewall dissipated as a 23 mile (37 km) outer eyewall became dominant, and concurrently the overall organization of the hurricane improved.
simplifications: The inner eyewall disappeared, but a 23 mile outer eyewall became dominant, and at the same time the hurricane's structure improved. The hurricane's inside eye-wall lessened. The outside eye wall strengthened. This made the hurricane stronger. The inner eyewall dissipated as a 23 mile (37 km) outer eyewall grew. At the same time, the organization of the hurricane improved. The inner eyewall went away as a 23 mile (37 km) outer eyewall became dominant. At the same time the overall organization of the hurricane got better. The inner eyewall disappeared and the outer eyewall took over. At the same time, the overall organization of the hurricane improved. The inner eyewall spread out as a 23 mile outer eyewall gained dominance. At the same time, the hurricane's organization improved. The hurricane improved when the inner eyewall dissipated and the  23 mile (37km) outer eyewall became dominant. The inner eye weakened as a 23 mile outer eye became powerful, and at the same time the overall the hurricane got stronger. The inner eyewall dissipated. A 23 mile (37 km) outer eyewall became dominant. Then, the overall organization of the hurricane improved. The inner eyewall subsided as a 23-mile (37 km) outer eyewall became dominant and, at the same time, the overall organization of the hurricane improved.