Input (grade 13): Steering winds ahead of an approaching mid-level trough caused Beryl to accelerate northeastward, and early on July 21 the center of the storm crossed the island of Nantucket.
Output (grade 12): Steering winds ahead of an approaching mid-level trough caused Beryl to speed up northeastward, and early on July 21 the center of the storm crossed the island of Nantucket.