Complex sentence: The circulation later became elongated and began to degenerated into a trough of low pressure, the NHC also noted that due to the large size of the overall system, the center of Erika could reform elsewhere and restrengthen.
Split into simpler sentences: The circulation later became elongated and began to degenerate into a trough of low pressure. The NHC noted that due to the large size of the overall system, the center of Erika could reform elsewhere and restrengthen.