Upon entering the Caribbean Sea, Allen continued to strengthen and became a Category 5 hurricane on August 5, while about halfway between Puerto Rico and Venezuela.

Later that day, the storm attained its peak intensity with winds of 190 mph (305 km/h) and a minimum barometric pressure of 899 mbar (26.5 inHg).

Immediately following peak intensity, Allen entered the Gulf of Mexico and weakened back to a Category 4 hurricane on August 8.

[19] However, just offshore, Allen abruptly weakened to a low-end Category 3 hurricane prior to landfall near Brownsville, Texas, on August 10.

[7] Having passed only 8 mi (15 km) south of St. Lucia,[19] Allen produced sustained winds as high as 104 mph (167 km/h) on the island.

[21] A total of 24 fatalities occurred in the United States – seven in Texas and seventeen in Louisiana – most resulting from the crash of a helicopter evacuating workers from an offshore platform.

[23] The storm strengthened slightly further and attained its peak intensity with winds of 100 mph (155 km/h) and a minimum pressure of 975 mbar (28.8 inHg).

[2] An extratropical low pressure system was centered over the Mid-Atlantic United States, though it tracked southeastward and emerged into the Atlantic on August 20.

As a result, it was determine that the system developed into a subtropical depression at 12:00 UTC, while located about 150 mi (240 km) east-northeast of Hatteras, North Carolina.

[25] At 12:00 UTC on August 23, Charley attained its peak intensity with winds of 80 mph (130 km/h) and a minimum pressure of 989 mbar (29.2 inHg).

The storm continued eastward and by August 26, Charley became unidentifiable as it merged with an intense extratropical cyclone, while located about 790 mi (1,270 km) southeast of Cape Race, Newfoundland.

[25] While a tropical cyclone, Charley produced rip currents along the Outer Banks of North Carolina, which drowned seven people.

At 00:00 UTC on September 1, the system developed into Tropical Depression Seven, while centered roughly midway between the Lesser Antilles and the west coast of Africa.

After curving northwestward an Air Force reconnaissance flight found little evidence of a closed circulation, while satellite imagery also showed a disorganized and elongated cloud pattern on September 4.

[30] On September 5, satellite imagery suggested a surface circulation had developed, possibly due to interaction with a cold low.

[26] A barge in the Gulf of Mexico capsized due to rough seas, sending 11 of the crewmen overboard; one person drowned as a result.

On the following day, Earl curved north-northwestward and accelerated due to an upper-level low pressure trough in the central Atlantic Ocean.

[42] At 06:00 UTC on that day, Frances attained its peak intensity with winds of 115 mph (185 km/h) and a minimum pressure of 958 mbar (28.3 inHg).

[42] Early on September 20, Frances weakened to a tropical storm,[43] before merging with a frontal low while centered about halfway between Greenland and Iceland.

Several ships reported tropical storm-force winds, but no impacts occurred on land except for minor squalls in Cape Verde.

[39] A tropical wave exited the west coast of Africa on September 11 and tracked westward with minimal development until reaching the Caribbean Sea.

By September 20, a low-level circulation had developed and the system was then classified as Tropical Depression Eleven, while located almost midway between Panama and Jamaica.

Hermine curved west-northwestward and nearly strengthened into a hurricane before landfall in northern British Honduras (present-day Belize) on September 22.

[48] Ivan moved largely in tandem with the upper-level low above it, while its southwest movement was caused by a building ridge to its north.

[50] On October 9, Ivan turned to the north in advance of an approaching cold front and extratropical storm, while slowly weakening as it accelerated over cooler waters of the far northern Atlantic Ocean.

Thereafter, Jeanne began to weaken due to dry air and was downgraded to a tropical storm 24 hours after peak intensity.

Steered northward by deep southerly flow southeast of Jeanne, the depression oscillated in organization while tracking west-northwestward.

[55] Late on November 17, the depression was absorbed by an intense "winter type storm" that was moving across the Southeastern United States.

Thereafter, Karl curved northeastward because of the aforementioned trough and weakened slightly on November 27, with the eye becoming ragged and showing signs of deterioration while passing within 230 mi (370 km) of the Azores.

Later that day, Karl turned north-northeastward around the periphery of the trough and merged with an approaching extratropical cyclone roughly halfway between Cape Race, Newfoundland and Spain.