The hurricane weakened early on October 7 due to a slight increase in mid-level wind shear, which inhibited upper-level outflow from the storm and disrupted its small core. Epsilon then peaked with maximum sustained winds of 115 mph (185 km/h) and a minimum pressure of 952 mbar (28.1 inHg) early on October 22. Epsilon was also the farthest east a major hurricane had been observed after October 20. However, the storm quickly weakened to Category 1 strength as its inner core eroded, though Epsilon then maintained this intensity over the next two days. Early on October 30, Zeta's remnants dissipated east of the mid-Atlantic U.S. A tropical wave emerged into the Atlantic from the west coast of Africa on September 26. There was little convection associated with the wave until September 30, with shower and thunderstorm activity increased. Thunderstorm activity continued to increase after formation, but was initially confined to the southern portion of the circulation due to northerly wind shear. This period of rapid intensification resulted in a 105 mph (170 km/h) increase in winds over a 36-hour period.

Zeta peaked later that day at 21:00 UTC when it became a Category 3 major hurricane with maximum sustained winds of 115 mph (185 km/h) and a minimum barometric pressure of 970 mbar (29 inHg), as it made its second landfall near Cocodrie, Louisiana. Its landfall location was only about 10 mi (15 km) east of where Hurricane Laura's eye crossed the coast on August 27. Inland, Delta weakened to tropical storm strength at 06:00 UTC on October 10 near Alexandria, Louisiana. Early on October 23, the hurricane made its closest advance toward Bermuda, passing about 185 mi (300 km) to its east. A large cluster of deep convection formed just east of the low by 06:00 UTC on October 19 while it was located about 830 mi (1,335 km) east of Bermuda, resulting in a sufficiently organized structure for it to be designated as Tropical Depression Twenty-Seven. However, a well-defined center of circulation formed with sufficiently organized deep convection around 18:00 UTC on October 4, marking the formation of Tropical Depression Twenty-Six.

However, the storm soon encountered a conducive environment of low shear and warm sea surface temperatures, allowing Zeta to become a hurricane again early on October 28; this marked the start of a period of rapid intensification. The hurricane and its remnants produced heavy rain, strong winds, storm surge, and tornadoes across much of the Southeastern United States. In Louisiana, the cyclone produced hurricane-force winds, with the highest reported sustained wind speed being 94 mph (151 km/h) at Golden Meadow, while the same location recorded gusts up to 110 mph (180 km/h). Gamma's outerbands also produced heavy rainfall in the Cayman Islands, Cuba, and Florida. In Mississippi, roughly 100,000 businesses and homes lost electricity after rainfall and tropical storm-force wind gusts uprooted trees. Zeta steadily lost strength after landfall, weakening to a tropical storm over Alabama at 06:00 UTC on October 29, before transitioning into a post-tropical cyclone over central Virginia by 18:00 UTC that day, while moving rapidly northeastward. Roughly 500,000 households in the state lost electricity.

Much of the rest of the state reported generally minor impact. The rest of the formation is shallow subtidal storm deposits; the different beds seem to have been subjected to storms many times, and most of the fossils have been broken. Six hours later, the system strengthened into Tropical Storm Epsilon, and then slowly intensified the following day, as it encountered sporadic bouts of dry-air intrusion imported by moderate vertical wind shear while executing a small counter-clockwise loop. The vertical shear subsided somewhat and the remaining dry air was ejected from the core between October 20 and October 21, enabling the storm to undergo rapid intensification, despite relatively cool sea temperatures and moderate wind shear remaining. Convection then fluctuated as it moved across the Caribbean Sea due to moderate wind shear and dry air. A large area of unsettled weather developed due to the combination of a tropical wave and a midlevel trough October 18-October 19 over the southwestern Caribbean Sea. The hurricane also generated large sea swells from Bermuda to the Bahamas, the Greater Antilles, and the Leeward Islands. As it began moving away from Bermuda on October 23, the tropical storm warning was cancelled. Delta soon began to rapidly intensify, attaining hurricane strength 12 hours later.

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