The hurricane moved northwestward where it winds peaked at 85 mph (135 km/h) before it weakened into a tropical storm and dissipated on July 22.

[2] Diana briefly weakened into a tropical storm on August 18 before reaching hurricane strength again the following day.

The storm moved west-northwest, paralleling the coast of Mexico as an 85 mph (135 km/h) hurricane before becoming extratropical on September 9.

[2] Only one report of Gwen was submitted to the National Weather Bureau by the vessel Lord Lodrington early on October 4.

However, by the time they reached the area where the hurricane was positioned, found the storm had completely dissipated.

The following names were used for tropical storms that formed in the North Pacific Ocean east of 140°W during 1960.