Hurricane Dora
Later on September 7, Dora re-strengthened into a Category 3 hurricane. 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 115 mph (185 km/h). Two hours later, Dora weakened to a Category 2 hurricane. However, deterioration then slowed, with the hurricane falling to tropical storm intensity over Jefferson County 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 transitioned into an extratropical cyclone several hours later. The remnants of Dora moved rapidly northeastward and dissipated offshore Newfoundland early on September 16.
1964 Atlantic hurricane season
In Guadeloupe, the storm destroyed 1,000 homes and caused extensive damage to roofs, roads, and power lines. Additionally, the banana crop was ruined. Overall, there were 14 deaths and about $50 million in damage. Cleo caused seven fatalities and at least $2 million in damage in Dominican Republic. Strong winds in Haiti caused severe damage. On Île-à-Vache, 50 houses either had the roof caved in or the walls knocked over. In Les Cayes, 70% of houses were destroyed, as was the sugar mill. In rural areas outside of the city, 90% to 95% of dwellings were demolished. About half of the houses in Camp-Perrin were leveled. Near Saint-Louis-du-Sud, many sugarcane crops, particularly on the west side of the city, were ruined. The storm left 192 fatalities and $5 million in damage in Haiti. Impact in Cuba was minor, with one death and $2 million in damage. In Florida, Cleo left damage along much of the east coast. Winds left about 620,000 people without electricity in South Florida alone. Throughout the state, the storm damaged almost 19,000 homes and destroyed 4 others, while 2,187 mobile homes were flattened or suffered severe impact. Additionally, 605 small businesses were damaged or destroyed. There were three deaths and about $125 million in damage, including agriculture. Cleo brought flooding to a few other states, especially Virginia. In the Hampton Roads area, many streets were inundated and blocked. Hundreds of dwellings were flooded, forcing several areas to evacuate. Two deaths and about $3 million in damage occurred in Virginia. Overall, the storm caused 219 fatalities and about $187.5 million in damage.
A tropical depression developed from a low pressure on August 28, shortly after moving offshore the west coast of Africa near Dakar, Senegal. The depression was upgraded to Tropical Storm Dora on September 1. It then curved northeastward and continued to strengthen, reaching hurricane status by early on September 3. Intensification slowed somewhat, though Dora became a Category 3 major hurricane on September 5. Deepening further, the peaked as a Category 4 with maximum sustained winds of and a minimum barometric pressure of early the following day. At 18:00 UTC on September 16, Dora weakened to a Category 3 hurricane, then a Category 2 hurricane while curving westward early the following day. However, later on September 17, the system re-strengthened into a Category 3 hurricane.