1964 Atlantic hurricane season
Approaching the east coast of Florida, Dora's motion became erratic, making a few cyclonic loops. Around 04:00 UTC on September 10, the hurricane made landfall near St. Augustine, Florida, with winds of . Two hours later, Dora weakened to a Category 2 hurricane. However, deterioration then slowed, with the hurricane falling to tropical storm intensity on September 11. Dora then briefly drifted over southwestern Georgia, until turned east-northeastward late the next day. Early on September 14, the storm re-emerged into the Atlantic Ocean near Cape Hatteras, North Carolina, and became extratropical several hours later. The remnants of Dora moved rapidly northeastward and dissipated offshore Newfoundland early on September 16.
1987 Pacific hurricane season
A tropical depression that had organized on July 15 while located south of Cabo San Lucas. The depression strengthened into a tropical storm that same day while located around 215 mi (345 km) west of Acapulco. Dora headed west-northwest and slowly strengthened. It reached its peak winds of 60 mph (95 km/h) on July 17. It then steadily weakened, becoming a depression two days later. Dora dissipated on July 20 while located west of Cabo San Lucas.
A tropical disturbance developed into a tropical depression on July 22 near the coast of Mexico. It initially headed westward and strengthened into a tropical storm the same day it formed. It strengthened into a hurricane, the first of the season, on July 24 as an upper-level cyclone pulled the system north. After peaking as a low-end Category 2 hurricane on July 25, land interaction weakened the hurricane to Category 1 as it made landfall west of Manzanillo. The rough topography weakened Eugene, and the hurricane was only a depression when it emerged into the Gulf of California. It promptly dissipated on July 26.