Tropical Storm Arlene A
tropical wave emerged into the eastern Atlantic on June 13. Tracking westward, the disturbance remained disorganized prior to reaching the western Caribbean.
Cyclonic rotation became increasingly evident on satellite imagery, though organization was halted by the disturbance's passage over the
Yucatán Peninsula on June 26. After emerging into the
Bay of Campeche, favorable environmental conditions allowed for the development of Tropical Storm Arlene by 18:00
UTC on June 28. Moving generally westward due to the influence of high pressure to the cyclone's north, Arlene gradually intensified, reaching its peak intensity with
maximum sustained winds of and a minimum
barometric pressure of at 12:00 UTC on June 30; the strong tropical storm moved ashore in Mexico near
Cabo Rojo,
Veracruz, about an hour later. Once inland, the center of circulation became increasingly diffuse, and the storm dissipated over the
Sierra Madre Mountains early on July 1. Numerous
tropical cyclone watches and warnings were issued for the coastline of Mexico shortly after the formation of Arlene; once inland, all were discontinued. High amounts of precipitation led to numerous mudslides and flooding, causing an estimated $223.4 million in damage. A total of 22 deaths were reported in association with Tropical Storm Arlene.
Tropical Storm Bret An
area of low pressure formed on the southern extent of a stalled
cold front just off the
East Coast of the United States on July 16. Tracking south-southeast, the low-pressure center was initially
baroclinic in nature, but quickly transitioned into a warm-core low over the warm waters of the western Atlantic. Decreasing vertical
wind shear allowed for the development of convection – shower and thunderstorm activity – atop the low-level circulation, and
Dvorak satellite classifications were initiated early on July 17 given the organization on satellite imagery. Following an aircraft reconnaissance flight into the disturbance that afternoon, the National Hurricane Center (NHC) subsequently classified the system as Tropical Depression Two at 18:00 UTC on July 17 about northwest of
Great Abaco Island in the Bahamas. After about six hours, the depression intensified into Tropical Storm Bret. Bret left minimal impact in the Bahamas, with rainfall alleviating drought conditions. Precipitation was also generally beneficial on Bermuda, though minor flooding affected some local businesses in poor-drainage areas.
Tropical Storm Cindy On July 17, an area of showers and thunderstorms, associated with the same
frontal system that spawned Tropical Storm Bret, consolidated around a developing area of low pressure about west-southwest of Bermuda. Tracking east-northeastward, the system gradually organized and became better defined. The disturbance produced moderate rains while passing south of the territory, peaking at ; gusty winds were also observed. At 06:00 UTC on July 20, the low developed into a tropical depression east of Bermuda. Embedded within the mid-latitude
westerlies, the depression moved northeast and maintained this general direction for the remainder of its existence.
Tropical Storm Don A tropical wave emerged off the western coast of Africa on July 16. Tracking westward, the disturbance produced sporadic convection, but remained disorganized through its passage into the Caribbean on July 23. Once there, showers and thunderstorms began to develop within an environment marginally conducive for tropical cyclogenesis. A broad area of low pressure formed and consolidated over the northwestern Caribbean Sea, and the NHC subsequently designated Tropical Depression Four on July 27 about 60 mi (95 km) northeast of
Cancún, Mexico. The depression quickly intensified into Tropical Storm Don as it moved into the Gulf of Mexico. Steered west-northwestward by a subtropical ridge across over the southeastern United States, Don strengthened initially under low wind shear, attaining a peak intensity with maximum sustained winds of and a minimum barometric pressure of 997 mbar (hPa; ). Despite low shear, Don was met with a significantly more stable environment as it emerged into the Gulf of Mexico. The winds decreased as the convection dissipated, and Don made
landfall on
Padre Island National Seashore as a tropical depression at 02:30 UTC on July 30. About three and a half hours later, Don degenerated into a remnant low, and the circulation dissipated six hours after that. The storm produced storm surge values lower than as well. In Don's final discussion, the National Hurricane Center famously stated that "the cyclone literally evaporated over Texas".
Tropical Storm Emily A tropical wave emerged off the west coast of Africa on July 25. Tracking westward, the disturbance gradually consolidated as multiple centers of circulation eventually dissipated and a new one formed. A marginally favorable atmospheric environment allowed for convection to develop, and a
reconnaissance aircraft flight into the system led to the classification of Tropical Storm Emily around 00:00 UTC on August 2 near
Dominica. Turning west-northwestward along the southwest edge of a large subtropical ridge to its northeast, Emily remained relatively disorganized on satellite imagery due to strong westerly wind shear. Despite a large burst of convection south of Hispaniola on August 3, the center of circulation accelerated west-northwestward, with a mid-level center moving inland over the island. At 18:00 UTC the following day, Emily degenerated into a tropical wave. Heavy rainfall and landslides in
Martinique damaged 29 homes. One indirect death was reported on the island. In
Puerto Rico, flooding and mudslides damaged roads, homes, and crops. About $5 million in infrastructural damage occurred, with $55 million in capital losses over. In Dominican Republic, flooding and mudslides left 56 communities isolated and caused three people to drown. Flooding in Haiti damaged over 300 homes and destroyed several cholera treatment centers. One death occurred in the country. The storm brought up to of rainfall to the Bahamas.
Tropical Storm Franklin A low-pressure area developed in association with a slow-moving frontal boundary over western Atlantic on August 10 and August 11. Tracking northeastward in response to deep southeasterly flow, the disturbance was initially slow to organize, but a marked organization of thunderstorm activity took place on August 12. Thus, Tropical Depression Six developed at 18:00 UTC while situated roughly north of Bermuda. The system brought unsettled weather to island, with rainfall reaching at
L.F. Wade International Airport. Passing roughly east of Bermuda, Gert brought light rain and winds up to . By August 16, convection had mostly dissipated due to increasing wind shear and cooler water temperatures, degenerating into post-tropical cyclone about northeast of Bermuda. The remnant low dissipated well east of Newfoundland on August 17. The precursor disturbance produced squally weather and gusty winds throughout the
Lesser Antilles. On
Saint Croix in the
United States Virgin Islands, gusty winds downed trees, which struck power lines, leaving minor electrical outages. Along its path, Harvey dropped heavy rainfall across much of Central America. A tornado in northern Belize also caused wind damage in a few villages. Heavy rains in Mexico triggered numerous landslides, one of which killed three people. Two other fatalities occurred in the country. Landslides and overflowing rivers damaged 36 homes and 334 homes in the states of
Chiapas and Veracruz, respectively. In Puerto Rico, heavy rainfall caused several rivers burst their banks, damaging roads and crops, particularly in
Maunabo and
Yabucoa. One death occurred on the island. Overall, damage in Puerto Rico totaled approximately $500 million. In Dominican Republic, flooding displaced more than 37,700 people and left at least 88 communities isolated. A total of 2,292 homes were damaged, 16 of which were rendered beyond repair. In Haiti, brisk winds in the
Port-au-Prince area blew down many refuge tents home to victims from the major
2010 earthquake. Two people were killed after being caught in rain-swollen rivers. In the Bahamas, strong winds damaged at least 40 homes on
Mayaguana, while dozens of homes on
Acklins were destroyed. On
Cat Island, the storm caused "millions of dollars" in structural damage and left many people homeless. Damage throughout the Bahamas reached about $40 million. Irene impacted the East Coast of the United States from Florida to
Maine. Damage in the state reached about $1.2 billion. New Jersey was also hit hard by flooding, strong winds, and storm surge. A number of rivers and creeks reached record or near record levels. Winds left approximately 1.6 million people without electricity. About 200,000 buildings and homes across the state suffered some degree of damage. The cost of damage throughout the state was approximately $1 billion. but the state received only minor wind damage overall. Storm surge left hundreds of millions in damage in New York City and on
Long Island. Severe flooding occurred in the
Catskill Mountains region, with three towns rendered completely uninhabitable. The remnants of Irene also brought flooding to Canada, especially
Quebec. One death and about $130 million in insured damage were reported.
Tropical Depression Ten A well-organized tropical wave moved into the eastern Atlantic on August 22. Tracking westward at a fast pace, the wave gradually developed shower and thunderstorm activity and a closed center of low pressure. Curved bands extended from the center by 00:00 UTC on August 25, indicating the development of a tropical depression; at this time, the system was centered about west-southwest of the southernmost
Cape Verde Islands. Unfavorable northeasterly shear prevented intensification, with the depression peaking with winds of and a minimum pressure of 1006 mbar (hPa; ) at the time of formation. As a mid-level ridge to the north of the cyclone weakened, it turned west-northwest while gradually weakening. By late on August 26, little convection existed over the center of circulation. At 00:00 UTC on August 27, the depression degenerated into a remnant area of low pressure and dissipated a few hours later after the center deteriorated into a trough.
Tropical Storm Jose A
mesoscale convective system developed north of an upper-level low east-southeast of Bermuda on August 25. A small mid-level area of low pressure formed on the western side of the convective complex later that same day, gradually developing into the lower levels of the atmosphere. As convection near the center of circulation increased in coverage and intensity, the system developed into a tropical depression at 06:00 UTC on August 27. Six hours later, the depression intensified into Tropical Storm Jose. After formation, strong wind shear from nearby Hurricane Irene slowed, and eventually halted, development trends. Jose attained its peak intensity with winds of and a minimum barometric pressure of 1006 mbar (hPa; ) but slowly weakened thereafter. Accelerating to the north and northeast, shower and thunderstorm activity gradually diminished, the low-level circulation became exposed, and the NHC determined Jose degenerated into a remnant area of low pressure near 00:00 UTC on August 29, roughly north-northwest of Bermuda. As a tropical cyclone, Jose produced tropical storm-force wind gusts on the island and several nearby buoys.
Hurricane Katia A tropical wave developed into a tropical depression about southwest of the southernmost Cape Verde Islands early on August 29. It intensified into a tropical storm the following day and further developed into a hurricane by September 1, although unfavorable atmospheric conditions hindered strengthening thereafter. As the storm began to recurve over the western Atlantic, favorable conditions allowed Katia to become a major hurricane by September 5 and peak as a Category 4 hurricane with winds of . However, internal core processes, increased wind shear, an impinging cold front, and increasingly cool ocean temperatures caused the cyclone to weaken almost immediately. Katia ultimately transitioned into an extratropical cyclone on September 10 about south-southeast of Newfoundland. At 00:00 UTC on September 13, Katia's remnant merged with a larger extratropical system, over the
North Sea. Although Katia passed well north of the Lesser Antilles, a yellow alert was hoisted for
Guadeloupe to notify residents of dangerous seas. Strong
rip currents along the East Coast of the United States led to the deaths of two swimmers. After losing its tropical characteristics, Katia prompted the issuance of numerous warnings across Europe. Hurricane-force winds impacted numerous locations, downing trees and power poles, leaving thousands of people without electricity. The storm was responsible for two deaths in the United Kingdom, with one from when a tree fell on a vehicle in
County Durham and another during a multi-car accident on the
M54 motorway resulting from adverse weather conditions. The post-tropical cyclone caused approximately £100m ($157 million) in damage in the United Kingdom alone. That day, an approaching trough caused the storm to accelerate northeastward. Cooler waters and increased wind shear stripped away the convection, resulting in the storm becoming extratropical early on September 3. The remnants continued northeastward, with the circulation dissipating by September 4.
Tropical Storm Lee A tropical wave developed into the season's thirteen tropical depression in the Gulf of Mexico about southwest of the mouth of the
Mississippi River at 00:00 UTC on September 2. About 12 hours later, the depression intensified into Tropical Storm Lee. The cyclone moved slowly north-northwestward and continued to strengthen. However, Lee transitioned into a subtropical storm at 12:00 UTC on September 3 due to a significantly expanded wind field, further interaction with an upper-level low pressure, and weak convection near the center. Around that time, the cyclone peaked with maximum sustained winds of and a minimum barometric pressure of . Lee weakened slightly before making landfall near
Intracoastal City, Louisiana, at 10:30 UTC on September 4. After moving inland, the storm moved northeastward and merged with a cold front over eastern Louisiana early on September 5. The remnant low dissipated over Georgia by late on the following day. In Louisiana, storm surge from
Lake Pontchartrain flooded more than 150 homes in
Jefferson and
St. Tammany parishes. Freshwater flooding also occurred in low-lying areas of southeastern Louisiana and southern and central Mississippi due to of rainfall across the area. Several roads were inundated, while 35 roads were damaged, 5 of which were washed out, in
Neshoba County, Mississippi. The storm spawned 46 tornadoes, one of which damaged about 400 homes in
Cherokee County, Georgia. In the Mid-Atlantic, the remnants of Lee produced over of rainfall in a wide area, causing worse flooding than in
June and July 2006 and
Hurricane Agnes in 1972. About 100,000 people in Pennsylvania evacuated, including the
governor's residence. In
Dauphin and
Lebanon counties alone, nearly 5,000 dwellings were damaged or demolished. Extensive flooding also occurred in western New York, particularly in
Binghamton,
Endicott,
Johnson City,
Owego,
Vestal, and
Waverly.
Hurricane Maria A tropical wave developed into a tropical depression about west-southwest of the southern Cape Verde Islands on late September 6. Early the following day, the depression strengthened into Tropical Storm Maria. The system reached winds of on September 8, before encountering stronger wind shear and cooler water temperatures near the Leeward Islands, degenerating into a low-pressure area on September 9. It slowly curved toward the north and northeast around the western periphery of the subtropical ridge, and regained tropical storm status on September 10. Maria further strengthened to attain hurricane status while making its closest approach to Bermuda. The cyclone peaked with winds of on September 16, but soon weakened due to an increase in wind shear and cooler ocean temperatures. Maria made landfall near
Cape St. Mary's, Newfoundland, on September 16, before being absorbed by a frontal system later that day. Despite its poor organization, Maria brought heavy rainfall to portions of the eastern Caribbean, especially Puerto Rico. Numerous roadways and homes were flooded, with 150 dwellings in the Yabucoa area receiving water damage. Many people were forced to evacuate after water and mud began entering their homes. Nearly 16,000 people were without electricity in Puerto Rico. In addition, tropical storm-force winds were observed on many of the U. S. Virgin Islands. As the system passed west of Bermuda, brief tropical storm-force sustained winds were recorded, along with higher gusts; rainfall on the island, however, was minimal. In Newfoundland, fairly strong winds were recorded, but rainfall totals were generally minimal. In the Bay of Campeche, 10 oil rig workers evacuated the Trinity II rig, but were forced to abandon their lifeboat. Seven of the ten were rescued, though the other four perished. One person died in the state after being struck by lightning. As the system made its closest approach to the Leeward Islands, Ophelia produced over of rainfall on some islands, Light precipitation totals and gusty winds below tropical storm force were observed on Bermuda, while storm surge and dangerous rip currents along the coast caused minimal damage. Following Ophelia's transition into an extratropical cyclone, residents in the
British Isles were urged to prepare for strong winds in excess of and precipitation accumulations up to . In the northern regions of Ireland, a combination of moisture and significantly cooler weather produced several inches of snow, leaving hundreds without electricity.
Hurricane Philippe On September 23, a well-defined tropical wave emerged off the coast of Africa, associated with plentiful shower and thunderstorm activity. Moving westward and embedded within a favorable environment for development, the wave quickly became organized. On September 24, a tropical depression developed about south of the southernmost Cape Verde Islands. Later that day, the depression intensified into Tropical Storm Philippe. Strong wind shear from upper-level winds and later on from Ophelia's outflow, as well as periodic entrainment of dry air, kept the cyclone both small and disorganized. Additionally, the low-level circulation was often exposed. Because of this hostile environment, Philippe remained near the minimum for a tropical storm and briefly weakened to a tropical depression on September 28. The storm began to strengthen significantly by October 1, with an
Advanced Scatterometer (ASCAT) pass on the following day confirming that Philippe was a strong tropical storm, contrary to satellite estimates. Despite high wind shear, it briefly strengthened to a hurricane on October 4 when it developed an eye feature, before weakening back to a tropical storm several hours later. Philippe re-acquired hurricane intensity on October 6 and peaked with maximum sustained winds of later that day. However, Philippe weakened to a tropical storm on October 8, before transitioning into an extratropical cyclone later that day. Early on October 9, the remnants extratropical storm was absorbed by larger low-pressure area to the west of the Azores. After the storm reaching peak intensity, upper-level winds and wind shear quickly became unfavorable, weakening Rina to a Category 2 later on October 26. While moving west-northwest and northward along the western periphery of the ridge, the cyclone weakened to a tropical storm on October 27. Later that day, Rina curved northward. Around 02:00 UTC on October 28, Rina struck
Quintana Roo about southwest of
Playa del Carmen with winds of . The storm left little impact in the Yucatán Peninsula due to its weakened state. Rina degenerated into a remnant low late on October 28, upon emerging into the
Yucatán Channel. The remnant low dissipated near the western tip of Cuba on October 29. Farther north, two tornadoes touched down in the vicinity of
Hobe Sound, one of which damaged 42 mobile homes, 2 vehicles, and a number of trees.
Tropical Storm Sean A low-pressure area of non-tropical origins developed into Subtropical Storm Sean at 06:00 UTC on November 8 about southwest of Bermuda. While convection and the wind field had become more symmetric, the system remained a subtropical cyclone due to the associated
upper-level low. Within 12 hours, Sean separated from the low and transitioned into a tropical cyclone, after developing a
warm core. It developed outflow and intensified due to light wind shear, combined with sufficiently warm water temperatures of at least . With a
ridge to the northeast, the storm moved slowly to the west. which later morphed into a ring of convection. The storm peaked with winds of on November 10 as reported by the
hurricane hunters. Shortly after development, the
Bermuda Weather Service issued a tropical storm watch, which was later upgraded to a tropical storm warning. When Sean passed near the island on November 11, it produced sustained winds of , with gusts to . Rip currents were also observed in North Carolina. ==Storm names==