Unnamed subtropical storm An amplified mid-latitude deep-layer trough moved offshore the
East Coast of the United States on January 14. After becoming cutoff from polar flow to the north, the trough decelerated and developed some convection, due to cold air aloft resulting in high
atmospheric instability and
sea surface temperatures around over the
Gulf Stream. A non-tropical
low-pressure area formed on January 15. it became a subtropical storm around 12:00
UTC about southeast of
Nantucket,
Massachusetts, with sustained winds of 60 mph (95 km/h). The system then intensified, peaking with maximum sustained winds of 70 mph (110 km/h) early on January 17. Thereafter, some weakening occurred as the cyclone moved away from the Gulf Stream. At 12:45 UTC on January 17, it made landfall at
Louisbourg, Nova Scotia, with winds of 50 mph (85 km/h), then soon became a post-tropical low, before dissipating over
far eastern Quebec the next day. The most intense winds related to the storm remained offshore, limiting impacts on land. Wind gusts ranging from 45–55 mph (75–90 km/h) occurred in eastern
Plymouth County, downing some trees. In Nova Scotia, the storm brought wind gusts of near to
Sable Island. Convection associated with this disturbance, a non-tropical mid- to upper-level trough, spawned a surface low on the following day.
Hurricane hunters investigated the depression on the morning of June 2, and determined that it had strengthened into Tropical Storm Arlene. Moving southward, Arlene remained a minimal tropical storm throughout the day with sustained winds of . At 06:00 UTC on June 3, it weakened to a tropical depression, six hours before degenerating into a remnant low about west of
Key West, Florida. The low subsequently dissipated north of Cuba the next day. including a peak total of in
Lakeland. However, this precipitation was mostly beneficial, alleviating drought conditions along with other rains that week. Nearby, winds caused the partial roof collapse of an apartment building in
Pembroke Park, forcing two families to evacuate. Damage from this incident totaled $50,000. The remnants of Arlene also dropped rainfall on several islands in the Bahamas, peaking at of precipitation in
Cockburn Town. The remnant wave later crossed Central America and contributed to the formation of
Hurricane Beatriz. Bret brought gusty winds and heavy rains to the Windward Islands, damaging 17 homes and the roofs of 35 other structures. Tropical storm-force winds damaged several buildings on Barbados, including a tree falling onto a home in
Bridgetown. Agricultural losses from the storm on Saint Lucia were $445,000.
Tropical Storm Cindy On June 18, the NHC began tracking a tropical wave that had recently moved off the coast of West Africa, which became more organized the next day. Though the system initially struggled to become better organized, it was in an environment overall conducive to development, and organized into Tropical Depression Four on the morning of June 22, while about east of the
Lesser Antilles. Despite marginal atmospheric conditions, the depression strengthened into Tropical Storm Cindy early the next day. At 12:00 UTC on June 24, Cindy's sustained winds intensified to , based on reconnaissance flight and satellite estimates. But later that day and continuing into the next, the storm grew progressively weaker. Then, at 06:00 UTC on June 26, Cindy dissipated about north-northeast of the Northern
Leeward Islands.
Hurricane Don A trough of low pressure formed over the central Atlantic on July 11, east-northeast of Bermuda. Though the system remained embedded within the trough and had not acquired a compact wind field, a well-defined center of circulation developed along with persistent deep convection early on July 14. Consequently, Subtropical Storm Don formed around then about east-northeast of Bermuda. Don's deep convection decreased later that day, and it weakened to a subtropical depression on July 16. the system transitioned to a tropical depression, based on Don's wind field and convective core becoming more consolidated. A few days later, while moving over the Gulf Stream on July 22, the storm quickly strengthened into a Category 1 hurricane with sustained winds of . While situated about east of Newfoundland early on July 24, Don degenerated into a non-tropical low, which continued east-northeastward across the Atlantic and transitioned into an extratropical cyclone late on the next day. The system struggled to organize amid conditions only marginally favorable while moving west-northwestward. By early on August 19, a low formed, which quickly organized into Tropical Depression Six about east of the Lesser Antilles. the depression intensified into Tropical Storm Gert on August 20. weakening Gert to a tropical depression by the next day. The low eventually opened up into a trough, but the remnants remained identifiable over the next week as the system trekked slowly northward into the central Atlantic. The remnant low again became well-defined, and the system regenerated into Tropical Depression Gert around 18:00 UTC on August 31. Gert continued its rebound, becoming a tropical storm once again about 24 hours later. Moving north-northeastward, its winds reached early on September 3, However, Gert began deteriorating several hours later while being drawn quickly northward and degenerated into a remnant low on September 4 about south-southeast of
Cape Race, Newfoundland,
Tropical Storm Emily On August 16, a tropical wave emerged into the Atlantic from the west coast of Africa and traversed the Cabo Verde Islands on the next day. Over the next few days, the system gradually organized under generally favorable conditions. On August 20, satellite wind data indicated that it was producing gale-force winds in its northern side, and the center became well-defined. Consequently, the disturbance developed into Tropical Storm Emily that day approximately west of the northernmost islands of Cabo Verde. Around 12:00 UTC on August 20, the storm peaked with winds of 50 mph (85 km/h) and a minimum pressure of . As a result, the cyclone degenerated into a remnant low early on August 21. However, the NHC continued to monitor the system for the chance of it redeveloping. The system showed some signs of reorganization as it moved through the subtropical Atlantic, but failed to organize further and dissipated on August 25. Franklin weakened slightly while crossing the Dominican Republic and emerged into the Atlantic later on August 23. After struggling with strong westerly shear and land interaction for a few more days, Franklin entered a more favorable environment on August 25 and promptly intensified into hurricane on August 26 while turning northwestward. Franklin then rapidly strengthened beginning on August 28, with the storm becoming a major hurricane that day, and then peaking as a Category 4 hurricane with winds of 150 mph (240 km/h) early on August 29. However, the system then weakened due to an
eyewall replacement cycle and wind shear from the outflow of Idalia. Then, on September 1, Franklin transitioned into an extratropical cyclone about northeast of Bermuda. Though some reorganization did take place, the extratropical system dissipated on September 9. In the Dominican Republic, Franklin brought heavy rainfall, typically ranging from of precipitation, and wind gusts up to in
Barahona. At least 350 people were displaced, and more than 500 homes and 2,500 roads were affected or damaged. Several communities became isolated, and nearly 350,000 homes lost electricity and another 1.6 million residents lost access to potable water. soon becoming better organized amid near record-warm sea surface temperatures of . Late on August 21, the system developed into Tropical Depression Nine about east of
Brownsville, Texas. Moving quickly westward, the depression intensified into Tropical Storm Harold at 06:00 UTC on August 22. Harold strengthened some more before making landfall on
Padre Island, in the
Texas Coastal Bend region, at around 15:00 UTC that day with maximum sustained winds of 60 mph (95 km/h). About five hours later, it weakened into a tropical depression. Harold generated modest storm surge in Texas as it approached landfall, reaching at
San Luis Pass. The storm brought up to of rainfall near
Orange Grove, Tropical storm-force winds also spread across the region, with sustained winds reaching and gusts peaking at , both recorded at
Loyola Beach. Over 35,000 customers across southern Texas lost power. Harold also brought heavy rain and strong winds to parts of northern Mexico, but caused only minor damage. In
Piedras Negras, of rain fell within a few hours. The remnants of Harold brought severe flooding to portions of the
American Southwest, including
Las Vegas, where one person died and another was reported missing. Overall, Harold caused approximately $505,000 in damage.
Hurricane Idalia On August 23, a trough of low pressure formed in the Eastern Pacific basin offshore of the Central America coast. The disturbance crossed over into the Atlantic basin and began to organize as it moved northward through the northwestern Caribbean, where a low-pressure area formed on August 25. The pace of organization quickened on August 26, with a tropical depression developing at 12:00 UTC about east-southeast of
Cancún, Mexico. Later that day, and into the next, the depression drifted due to weak surrounding steering currents, with its center moving in a small counter-clockwise loop. A brief jog southward moved the depression over Cancún around 06:00 UTC on August 27. About six hours later, the cyclone intensified into Tropical Storm Idalia. Early on August 28, Idalia began moving northward toward the
Yucatán Channel west of
Cuba, intensifying along the way. After passing near the
western tip of Cuba early the next day, the storm strengthened into a hurricane. Due to warm sea surface temperatures, low wind shear, and moist air, Idalia rapidly intensified as it accelerated northward through the Gulf of Mexico, reaching Category 4 strength early on August 30 and peaking with maximum sustained winds of and a minimum central pressure of . Idalia quickly weakened as it moved inland into southeast
Georgia, and it was downgraded to a tropical storm at 18:00 UTC that same day. Strong southwesterly wind shear then pushed the storm's convection well north and east of its center as it moved off the northeastern
South Carolina coast and emerged into the Atlantic early on August 31. Around 12:00 UTC, while about east of
Cape Fear, North Carolina, Idalia transitioned into an extratropical cyclone. Consequently, flooding occurred in some areas of the latter, especially in
Artemisa and
Pinar del Río provinces, forcing the evacuation of over 10,000 people. In Florida, high winds and storm surge reaching up to above the ground between Keaton Beach and
Steinhatchee caused significant damage across the
Big Bend region of Florida to agriculture, infrastructure, and buildings and residences, which were flooded up to several miles inland. Tens of thousands of structures in Florida outside the Big Bend region sustained some degree of damage. Parts of Georgia and the Carolinas experienced rains, strong winds, storm surge, and tornadoes, but with lesser impacts than in Florida, while high tides were reported as far north as the
Mid-Atlantic. Overall, Idalia caused approximately $3.6 billion in damage and twelve deaths in the United States – four in Florida, three each in North Carolina and New Jersey, and one each in Georgia and Delaware.
Tropical Storm Jose On August 19, a vigorous tropical wave moved off the west coast of Africa. After traversing the Cabo Verde Islands, a low-pressure area developed on August 24. The disturbance struggled to organize until August 29, when persistent deep convection reignited over the eastern side of the circulation. Consequently, Tropical Depression Eleven formed about southeast of Bermuda. However, the shear briefly relaxed, and the storm's convective bursting pattern abruptly evolved into curved banding early on August 31, signifying that the depression had strengthened into Tropical Storm Jose. Further development occurred slowly as Jose's banding features remained limited, and the convection at its center was shallow. Even so, the storm's structure improved markedly early on September 1 as convection near the center deepened and a small mid-level eye feature appeared, causing Jose to peak with maximum sustained winds of . Jose then accelerated northward, pulled by the larger and stronger Franklin, and was absorbed into the latter late that day about northeast of Bermuda. By 00:00 UTC on September 4, far northwest of the Cabo Verde Islands, the storm had weakened to a tropical depression, six hours before degenerating into a remnant low. The low made an elongated loop and then began moving quickly southwestward. Several days later, the low made another loop over the Central Atlantic and turned southeastward before dissipating on September 15.
Hurricane Lee On September 1, a tropical wave emerged into the tropical Atlantic from the west coast of Africa. A broad surface low formed by September 4, which acquired multiple low-level bands developing and a well-defined center on the next day. Consequently, Tropical Depression Thirteen developed at 12:00 UTC that day about halfway between the west coast of Africa and the Lesser Antilles. Amid favorable conditions for intensification, the depression quickly strengthened into Tropical Storm Lee six hours later and a then a hurricane by late on September 6. Then, during the 24hour period ending at 06:00 UTC on September 8, Lee experienced
explosive intensification, and reached Category 5 strength, with its winds increasing by 80 mph (130 km/h) to 165 mph (270 km/h). The pace of weakening quickened as the day progressed, and Lee fell below major hurricane status by late on September 9, By September 10, wind shear abated, permitting the new, larger-diameter eye to contract and to grow more symmetric. As a result, Lee intensified to Category 3 strength once again that same day. Another series of eyewall replacement cycles led to fluctuations in its size and intensity, but Lee remained a major hurricane throughout. After tracking west-northwestward to northwestward for much of its transAtlantic journey, Lee turned northward on September 13, moving around the western side of the steering subtropical ridge. That same day, it also weakened to Category 2 strength. which it passed to the west by later in the day. As the hurricane pushed northward, continued drier air entrainment and increasingly strong southerly wind shear displaced Lee's convection to the northern side of the system, weakening it further. These factors caused the hurricane to commence its extratropical transition, which was completed by 06:00 UTC on September 16. Later that day and throughout the next two days, the extratropical cyclone made several landfalls in Atlantic Canada before moving into the northern Atlantic and merging with another extratropical low late on September 18. By 12:00 UTC on September 7, the system organized into Tropical Depression Fourteen about northwest of
Brava in the Cabo Verde Islands. Six hours later, the depression intensified into Tropical Storm Margot. Margot reached hurricane status by September 11, It continued along a north to north-northwest track for a few days, exhibiting a double eyewall with a well-defined inner core and reaching winds of on September 13. After convection became increasingly farther from the center, Margot degenerated into a remnant low about southwest of the Azores late on September 16. The remnant low completed the loop before dissipating two days later. After merging with a nearby low-pressure area on September 12, the system gradually organized into Tropical Depression Fifteen by early on September 15 about east of Barbados. the depression developed convective banding in its northern semicircle late on September 16. Around 00:00 UTC the next day, the depression strengthened into Tropical Storm Nigel and then to a Category 1 hurricane early on September 18, as an eyewall began to develop. Although Nigel's eye became better defined and warmer on September 19, intruding dry air disrupted convection on the storm's north side. Nigel turned northward along the western edge of a mid-level ridge over the central subtropical Atlantic. The system's large eye became fully surrounded by a solid band of deep convection, enabling Nigel to become a Category 2 hurricane later on September 19, displaying characteristics typical of an
annular tropical cyclone. Early on September 20, Nigel peaked with winds of 100 mph (155 km/h). causing the storm to weaken to Category 1 strength on September 20. The hurricane curved north-northeastward and then northeastward on September 21, and accelerated, within the flow on the southeastern side of a strong mid-latitude trough. At the same time, increasing southwesterly wind shear began causing an elongation of Nigel's cloud pattern, resulting in further weakening. Nigel also encountered sea surface temperatures falling below , leading to an extratropical transition northwest of the Azores early on September 22. A broad non-tropical low formed on September 21, aided by the presence of a mid- to upper-level trough moving off the Southeastern United States. By late the following, the low shed its frontal characteristics and acquired more deep convection and tropical storm-force winds, leading to the development of Tropical Storm Ophelia. Early on September 23, the cyclone peaked with winds of 70 mph (110 km/h) and a minimum pressure of . Ophelia then made landfall around 10:15 UTC near
Emerald Isle, North Carolina, about west-northwest of
Cape Lookout. Inland, Ophelia quickly weakened and lost tropical characteristics, transitioning into an extratropical cyclone late on September 23 over southern
Virginia. The low associated with Ophelia dissipated over
Maryland on September 24, while the remnants meandered offshore the
Mid-Atlantic for a few more days, until being absorbed by another nearby low.
States of emergency were declared in Virginia, North Carolina, and
Maryland ahead of the storm. Five people aboard an anchored
catamaran near
Cape Lookout, North Carolina, had to be rescued by the
U.S. Coast Guard due to deteriorating conditions as the storm approached. The highest storm surge was above mean sea level at
Sewell's Point, Virginia. while also leaving about 70,000 homes without electricity in eastern North Carolina and Virginia combined.
Tropical Storm Philippe On September 20, a tropical wave moved offshore West Africa and into the Atlantic. The wave developed into a low-pressure area by the next day, which organized into Tropical Depression Seventeen roughly east of Barbados on September 23. Later that day, the depression became Tropical Storm Philippe and continued to strengthen due to warm waters and light to moderate wind shear while moving westward along the southern side of a mid-level ridge. After reaching winds of 60 mph (95 km/h) early on September 25, Philippe encountered stronger wind shear, causing the center to become exposed. Between September 27 and September 28, the cyclone nearly stalled and moved north-northwestward before curving southwestward due to the aforementioned ridge being replaced by another one and the close proximity of Rina. Philippe's slowed motion allowed for some re-intensification, again reaching winds of 60 mph (95 km/h) late on September 30. However, wind shear soon stripped convection away from the center again by the next day. On October 2, the storm turned northwestward and struck
Barbuda at 22:45 UTC with winds of 50 mph (85 km/h), before passing near the Virgin Islands the next day. Philippe turned northward on October 4, and weakened some due to wind shear. The storm briefly re-strengthened on October 5 due to interaction with a trough. However, the trough also generated a non-tropical low, which absorbed Philippe around 12:00 UTC on October 6 about south of Bermuda. Floodwaters inundated several homes and vehicles in Antigua and Barbuda. In Antigua, a fire ignited due to a lightning strike produced by Philippe burned down several buildings at a yacht club. Preliminary losses for the fire are in the millions of Eastern Caribbean Dollars (US$370,000). Off the United States Virgin Islands, 12 people were rescued after a ship started to submerge in rough seas. Authorities reported widespread damage to buildings, roads, and agriculture. Premier
Natalio Wheatley issued a contingency warrant totaling $500,000 to support recovery efforts from the storm. Puerto Rico also felt impacts from Philippe's strong winds and rain. Damage totaled to $16,000. Bermuda experienced some strong winds and rain but reported only minor damage. Gusts in the state were in the 50–60 mph (85–95 km/h) range, while many locations in Atlantic Canada reported gale-force winds. A broad area of low pressure formed the next day, and the showers and thunderstorms within this disturbance began showing signs of organization a couple days later. Early on September 28, the system organized into Tropical Storm Rina about east-northeast of Barbados. But it only intensified for a brief time, peaking with winds of 50 mph (85 km/h) before weakening on account of strong northeasterly wind shear and dry mid-level air. Rina became devoid of organized deep convection early on October 1, and its surface circulation became increasingly ill-defined during the day. Consequently, the system degenerated into a remnant low around 18:00 UTC about southeast of Bermuda. The remnant low dissipated early on October 2. Around 12:00 UTC on October 12, Sean re-strengthened into a tropical storm, shortly before peaking with winds of 45 mph (75 km/h). Thereafter, Sean degraded slowly, lingering for a day and a half before becoming a remnant low on October 15 about east of the Leeward Islands. The low continued slowly west-northwestward before dissipating late the next day. After pulling away from the Leeward Islands that day, Tammy weakened to a minimal hurricane while struggling against wind shear. By October 25, however, Tammy began to strengthen while interacting with an upper-level trough and later that day peaked as a Category 2 hurricane with maximum sustained winds of 110 mph (175 km/h). a drier air mass, and an increase in wind shear diminished the cyclone's convection and caused it to weaken to a tropical storm early on October 27. Though the storm became significantly asymmetrical, it maintained a warm core. Tammy then turned eastward along the northern periphery of a subtropical ridge and briefly re-developed more convection, but degenerated into a remnant low late on October 28 about east-northeast of Bermuda. The remnant low opened into a trough over the central Atlantic late on October 31. There were no reports of serious storm damage. Rainfall amounts across the Leeward Islands were between , and storm surge heights were between . Puerto Rico was also affected by Tammy's strong winds and rain. Damage totaled to $13,000.
Bermuda was impacted with wind gusts of .
Tropical Depression Twenty-One {{Infobox hurricane small An area of disturbed weather within the eastern Pacific monsoon trough developed into a broad low-pressure area over the far southwestern Caribbean on October 22. The low quickly acquired more deep convection and a well-defined circulation, signaling the formation of a tropical depression at 12:00 UTC on the next day roughly east of southern
Nicaragua. However, no intensification occurred prior to the depression making landfall in Nicaragua near
Pearl Lagoon in the
South Caribbean Coast Autonomous Region at 01:30 UTC on October 24 with winds of 30 mph (45 km/h). By 12:00 UTC, the depression degenerated into a remnant low, which dissipated shortly thereafter near
Rosita. The remnants of the depression crossed over Central America and contributed to the formation of
Tropical Storm Pilar in the Eastern Pacific. The depression produced of rain over southeastern Nicaragua, with some locally higher totals, including of precipitation in
Bluefields over a 48-hour period. Despite heavier rains, there were no visible reports of damages or casualties from the system. The disturbance became more organized on November 16. Satellite images and data gathered during a U.S. Air Force Reserve hurricane hunter flight showed that the system had a closed yet elongated circulation, but there was not a well-defined low level center. At 21:00 UTC on November 16, the NHC designated the system Potential Tropical Cyclone Twenty-Two. The system was unable to organize further due to persistent high wind shear, and only produced near
gale-force peak winds of . At 03:00 UTC on November 18 the NHC issued their final advisory on the system, then located between Cuba and Jamaica, after it seemed likely that the disturbance would neither develop nor produce tropical storm-force winds. The latter region recorded heavy rainfall, with up to of precipitation in
Jamaica and in the Dominican Republic. In Jamaica, flooding forced the rescue of 24 people, while about 24,000 customers lost electricity as heavy precipitation downed trees and power lines and caused mudslides. The disturbance left at least three people dead in
Haiti. Between November 17 and November 19, the Dominican Republic Emergency Operations Center rescued over 2,500 people. Flooding damaged several bridges and roads and over 2,600 homes, while 17 were destroyed. The disturbance killed at least 21 people in the Dominican Republic. According to AON, 32 fatalities occurred from the system in the Caribbean and damages totaled approximately $605 million. == Storm names ==