Complex sentence: By the early morning hours of October 3, strong wind shear and decreasing water temperatures had greatly weakened the storm, and by the evening, Nadine became extratropical and merged with an approaching cold front northeast of the Azores.
Split into simpler sentences: By the early on October 3, strong wind shear and decreasing sea surface temperatures (SST's) significantly weakened the storm. Later that day, Nadine transitioned into an extratropical and merged with an approaching cold front northeast of the Azores.