Activity then quieted down across the basin for most of July after Beryl dissipated, with no new tropical cyclones forming due to the presence of the Saharan air layer (SAL) across much of the Atlantic.

Hurricane Helene developed over the western Caribbean before moving toward the Big Bend region of Florida and making landfall there on September 26 at Category 4 strength, causing catastrophic flooding and numerous fatalities over central Appalachia.

[2] In mid-November, the last system, Tropical Storm Sara, moved very slowly along the coast of Honduras, before making landfall in Belize, while producing widespread heavy rainfall resulting in severe flash flooding and mudslides across northern Central America.

[nb 1][5] They took into account ongoing warm sea-surface temperatures (SST) throughout most of the basin, specifically in the Main Development Region and in the Caribbean Sea on top of the 2023–2024 El Niño event which was predicted to weaken to a neutral phase by August 2024.

They cited expected moderate La Niña conditions and record-warm sea surface temperatures in the tropical Atlantic tied to large-scale warming.

After forming on June 28 in the main development region (MDR), the storm rapidly intensified as it approached the Windward Islands,[35][36][37] peaking as a Category 5 hurricane early on July 2.

[85] Located south of a strong subtropical ridge, the depression moved generally westward through an unusually favorable environment for the time of year with warm sea surface temperatures (SST) and minimal wind shear, consequently beginning a period of rapid intensification.

The depression strengthened into Tropical Storm Beryl six hours after formation,[86] and the thunderstorms quickly organized into a central dense overcast, with a symmetric cloud pattern surrounded by rainbands.

[126] Chris generated heavy rains in the states of Chiapas, Hidalgo, Morelos, San Luis Potosí, and Veracruz, causing flooding, overflowing rivers, and mudslides.

[154] After a brief period of re-intensification throughout August 19, re-strengthening to sustained winds of 90 mph (145 km/h),[155] Ernesto began to weaken once again due to colder sea surface temperatures and environmental conditions becoming unfavorable, as it brushed the coast of Newfoundland.

As of November 14, a total of about 246 deaths have been attributed to Helene, making it the second-deadliest hurricane to strike the continental United States in fifty years, after Katrina in 2005 and the deadliest overall since Maria in 2017.

The low detached from the frontal boundary and acquired organized convection, transitioning into a tropical storm late on September 25 about 590 mi (955 km) northeast of Bermuda.

[199] Isaac's intensification then leveled off under the influence of increasingly unfavorable sea surface temperatures, wind shear, and dry air,[201] weakening back to a tropical storm late on September 29.

Joyce reached its peak intensity at 18:00 UTC with winds of 50 mph (80 km/h) and a minimum pressure of 1001 millibars as calculated by a mix of the Knaff-Zehr-Courtney model and Dvorak wind-pressure relationship.

[208] On September 28, the NHC began monitoring a broad area of low pressure producing limited shower activity west of Cabo Verde.

[213] Amidst "quite conducive" environmental conditions, Kirk strengthened at a quick pace, with the National Hurricane Center noting a partial eyewall by early on September 30.

[228] The next day, a broad area of low pressure formed along wave south of the Cabo Verde Islands amid conditions conducive for additional development.

[61] Late that same day, the system strengthened, becoming Tropical Storm Leslie, while moving slowly to the west within a moderate wind shear environment due to the outflow from Hurricane Kirk to its northwest.

[239] As this broad trough began interacting with a stationary front and the remains of Tropical Depression Eleven-E in the eastern Pacific,[240] a new low-pressure area developed in the Gulf of Mexico on October 4.

[264] The system quickly developed a closed circulation, and was designated as Tropical Storm Nadine early the next day, while about 120 mi (190 km) east of Belize City.

[267] Nadine's remnants ultimately entered the Pacific basin, where they facilitated the development of a trough of low pressure in the Gulf of Tehuantepec,[268] which led to the formation of Hurricane Kristy on October 21.

Two people died inside a house in the municipality of Tila, which was hit during a landslide; and in San Juan Chamula, a man drowned when his vehicle was swept away by flood waters.

[275] There were also two fatalities in Veracruz: one after his house was overtaken by a mudslide in Sierra de Zongolica, and another in Santiago Tuxtla as a result of an electrocution; a man also went missing after being swept away by flooding.

[281] The disturbance remained disorganized as it passed to the north of Puerto Rico on October 18, though strong convection persisted around an emerging mid-level center of circulation.

[227] On October 31, a storm-force non-tropical low located about 550 mi (890 km) west of the western Azores began producing showers and thunderstorms near its center.

[305] That afternoon, however, the system turned westward and began losing strength and organization, due to increasing westerly wind shear and dry air intrusion.

[321] The system moved generally westward toward Central America into the next day, and the NHC noted the high possibility of further organization due to favorable environmental conditions.

[324] Later that day, Air Force Reserve reconnaissance aircraft found maximum sustained winds of around 40 mph (65 km/h), prompting the NHC to name the depression Tropical Storm Sara.

[325] Late that same day, data from an Air Force Hurricane Hunter passed over Sara's northern semicircle indicated that the storm had moved just inland or very near the northeastern coast of Honduras,[326] striking about 105 mi (165 km) west-northwest of Cabo Gracias a Dios.

[332][333] The precursor disturbance of Sara caused flooding in the Dominican Republic, resulting in the evacuation of 1,767 people, isolating 54 communities, destroying two homes and damaging 487 more.