As the calendar entered the new year, cyclogenesis occurred with an extratropical frontal wave over the western North Atlantic Ocean due to a closed low forming in a mid-level trough, which eventually produced a low-pressure center at the surface by January 2.
[13] However, reanalysis by scientists in 2015 determined that Able was in fact far weaker than originally listed in HURDAT, the official database containing information on storm tracks and intensities in the Atlantic and Eastern North Pacific regions.
[8] On August 2, an easterly wave spawned a tropical depression about 680 miles (1,090 km) northeast of Barbuda in the Lesser Antilles.
Early on August 3, the storm attained peak winds of 60 mph (97 km/h), and the next day passed about 275 mi (443 km) east of Bermuda.
Passing south of Puerto Rico and Hispaniola, Charlie then underwent rapid deepening beginning late that day, its winds increasing 35 mph (56 km/h) in 24 hours.
[5][15][16] After making landfall, Charlie weakened in its passage over the mountainous center of Jamaica, and by the time it left the island, its winds had diminished to 85 mph (137 km/h).
[8] Maintaining its strength, the hurricane then made landfall on the southern tip of Cozumel and hit the Mexican mainland near Akumal on the Yucatán Peninsula.
[17] As it moved inland, Charlie weakened rapidly over land, reaching the Bay of Campeche as a minimal hurricane early on August 21.
As it did so, it rapidly re-intensified for a third and final time, reaching peak winds of 115 mph (185 km/h) before striking near the city of Miramar, just north of Tampico.
[8] On September 2, Dog attained hurricane status,[5] reaching its peak of 90 mph (140 km/h) as it passed between the islands of Saint Lucia and Martinique.
[5] However, this peak was short-lived, for upon entering the eastern Caribbean Sea Dog began a slow but steady weakening trend.
On September 4, Dog weakened to tropical storm status to the south of Hispaniola, and the next day dissipated in the western Caribbean.
[20] Jamaica was struck by Hurricane Charlie a few weeks prior, and the threat from Dog prompted coastal evacuations and the closure of an airport.
[8] Moving generally west-northwestward, the depression deepened into a tropical storm late that day, and further to hurricane status by September 3.
Its winds fluctuated through the early morning on September 6, but then resumed strengthening, reaching major hurricane status by that evening.
On this basis, Easy was once classified as a Category 5 hurricane on the Saffir-Simpson scale;[23] A reanalysis in 2015 lowered the peak winds to 150 mph (240 km/h) on September 8.
[23] The Weather Bureau advised Bermuda to take precautionary measures in advance of the storm;[25] tourists and residents "worked feverishly" to complete preparations, and the United States Air Force issued "a formal warning at noon.
Moving generally westward, it passed south of the Cape Verde islands, quickly strengthening into Tropical Storm Fox early on September 3; by that time, its motion turned to the west-northwest.
After maintaining peak winds for 12 hours, Fox began a steady weakening trend, accelerating to the north and northeast ahead of Easy and passing to the east of Bermuda.
[5][8] George later made landfall on September 21 in Mexico about 55 mi (89 km) south of Tampico as a moderate tropical storm.
[8] Based on Hurricane Hunter reports, the depression intensified into Tropical Storm How late on September 30, and it continued to strengthen as it approached Southwest Florida.
On October 2, How attained its first peak of 65 mph (105 km/h) just before making landfall near Boca Grande, and within the day it crossed southern Florida.
[29][30] The storm emerged into the Atlantic Ocean between Fort Pierce and Vero Beach, quickly intensifying to hurricane strength by October 3.
Turning northeastward, How reached its second and strongest peak of 100 mph (161 km/h) on October 4 as it passed near the Outer Banks of North Carolina.
[8] It passed southeast of Cape Cod before turning more to the east-northeast,[5] causing road closures due to high tides.
Continuing a slow weakening trend, it passed just east of the Isla de la Juventud before striking western Cuba as a tropical depression on October 17.
Given the name "Jig", it moved northeastward, quickly attaining hurricane status with winds of 75 mph (121 km/h), which it maintained for a full day.
During this time, the storm made its closest approach to the southeastern United States while passing well southeast of Cape Hatteras.
After the storm turned to the southeast, a ship in the region reported winds of 75 mph (121 km/h) near the center and a pressure of 995 mbar (29.4 inHg), while a weather station indicated that the system had a warm core.
A building ridge near Spain forced the extratropical system to the southeast, eventually dissipating after coming ashore in Morocco on December 15.