风切变
The storm then headed northwestward, until a weak frontal trough turned Felix northward on September 1. Wind shear decreased, allowing Felix to become a tropical storm again on September 3. The storm continued to strengthen while moving west-northwestward and by early on September 5, it became a hurricane. Later that day, Felix peaked with winds of . Drifting north-northeastward, the storm eventually began to accelerate, after weakening back to a tropical storm on September 7, due to colder sea surface temperatures and increasing wind shear. At 1200 UTC on September 9, Felix became extratropical while located well east of Cape Race, Newfoundland. The remnants later curved east-southeastward and then dissipated on September 10.