Original: Upper-level winds gradually became more beneficial for development, and on August 13 a broad low pressure area formed about 90 miles (145 km) north-northeast of Cancún, Quintana Roo.
Simplified: Upper-level winds slowly became more helpful for development, and on August 13 a large low pressure area formed about 90 miles (145 km) north-northeast of Cancún, Quintana Roo.