The disturbance continued to organize over the next day as a well-defined surface low developed. Helene's Status on Sept. 13, 2018 At 5 a.m. EDT (0900 UTC), the center of Hurricane Helene was located near latitude 23.5 degrees north and … Two hurricanes are pushing through the tropical Atlantic. Helene is moving toward the north-northwest near 14 mph (22 kph). [25], Alberto and its precursor caused flooding in the Yucatán Peninsula, particularly in Mérida. However, on July 10, a developing trough over the northeastern United States accelerated Chris eastward into warmer waters, allowing for the formation of an inner core. Ocean Heat Content & Forecast Track. [45], A tropical wave and a broad low-pressure area exited the west coast of Africa on August 30. At 17:30 UTC on October 10, Michael made landfall near Panama City, Florida, at its peak intensity as a Category 5 hurricane with maximum sustained winds of 160 mph (260 km/h) and a minimum barometric pressure of 919 mbar (27.1 inHg). The U.K. Meteorological Service noted that the Yellow Alert means “a spell of very windy weather is expected. Leslie resulted in the cancellation of over 180 sports matches, more than half of them affecting the Madeira Football Association. [50] One death occurred in Miami on Interstate 95 when a truck driver lost control of his vehicle, crashed into a wall, and was ejected from the truck. Extensive wind damage also occurred in southeastern Alabama. What years were the greatest and fewest seen? [23], The combined effects of the precursor low to Michael and a disturbance over the Pacific Ocean caused significant flooding across Central America. Oscar's extratropical transition ended the season's activity on October 31. Here you can see the frequency, location and extent of lightning in each of the storms, and other parts of the western Atlantic basin. • … [63], A tropical wave moved off the west coast of Africa on September 14, with signs of rotation. Moving northward along the western side of a mid-level ridge, deep convection increased near the center of the cyclone, and Debby transitioned to a tropical storm at 00:00 UTC on August 8. The frontal system dissipated a few days later, but the remaining shower and thunderstorm activity developed into a non-tropical low by July 3. Wind shear seems to be affecting several storms in the Atlantic Ocean today, Sept. 13, 2018. At 12:00 UTC on September 8, the depression intensified into Tropical Storm Isaac. [83] Catastrophic damage occurred in portions of the Florida Panhandle, particularly in and around Mexico Beach, Panama City, and Panama City Beach. A two-week period of inactivity ensued as the season began to wind down. These swells are likely to cause life-threatening surf and rip current conditions. Don't Edit ... Hurricane Helene … About 27,000 people lost electricity, with most in Alabama and the Florida Panhandle. Weak steering currents caused the depression to initially move slowly, while moderate wind shear temporarily prevented the system from strengthening. After Ernesto became a warm core system, with sufficient convective organization and anticyclonic outflow, the cyclone transitioned into a fully tropical storm late on August 16. Michael quickly became a hurricane around midday on October 8 as a result of rapid intensification. [57] At 00:00 UTC on September 14, Joyce transitioned into a tropical storm. A turn toward the north-northeast with an increase in forward speed is expected tonight followed by a turn toward the northeast over the weekend of Sept 15 and 16. The depression strengthened into Tropical Storm Kirk about six hours later, becoming a named storm at 8.1°N, the lowest latitude for a system of tropical storm strength or higher in the north Atlantic since an a hurricane in 1902. NASA-NOAA’s Suomi NPP satellite passed over the eastern Atlantic Ocean and analyzed the storm. At 00:00 UTC on September 19, Joyce degenerated into a remnant low, which continued an eastward motion for another couple of days, before dissipating late on September 21. [23], Early on October 6, a tropical wave moved off the west coast of Africa. Particularly hard hit was western North Carolina, where flooding and mudslides led to the closure of more than 40 roads, including parts of the Blue Ridge Parkway. [64], A tropical wave emerged into the Atlantic from the west coast of Africa on September 22. However, the anticipated El Niño failed to develop in time to suppress activity, and activity exceeded most predictions. Nearly 2,000 homes in Nicaragua suffered damage and 1,115 people evacuated. On August 31, the depression that would later become Hurricane Florence developed. Approximately 2,000 people fled their homes in McDowell County due to the threat of failure of the dam at Lake Tahoma. [69] Approximately 2,000 chickens died at a poultry farm after their pens collapsed during the storm. Thereafter, the cyclone began moving westward between 12 and 17 mph (19 and 27 km/h) after a subtropical ridge situated north of the storm strengthened. Oscar, forming as a subtropical storm on October 26, intensified into a hurricane the next day, making it the eighth hurricane of the season. Florence then slowed significantly due to collapsed steering currents and made landfall near Wrightsville Beach, North Carolina, as a Category 1 with winds of 90 mph (150 km/h) around 11:15 UTC on September 14. Approximately one million people lost electricity at the height of the storm. [74] The threat of the storm caused eight airlines to cancel flights into Madeira. By Len Melisurgo | NJ Advance Media for NJ.com Facebook Share. Around 21:00 UTC, Alberto made landfall near Laguna Beach, Florida, with winds of 45 mph (75 km/h). After additional strengthening, the cyclone reached its peak intensity around 18:00 UTC on September 11, with maximum sustained winds of 150 mph (240 km/h) and a minimum barometric pressure of 937 mbar (27.7 inHg). This was the same list used in the 2012 season, with the exception of the name Sara, which replaced Sandy. Helen is 1,350 miles (2,170 km) south-southwest of the Azores Islands. [71], A non-tropical area of low pressure formed over the central Atlantic on September 22, quickly transitioning into Subtropical Storm Leslie by 12:00 UTC on the next day about 945 mi (1,520 km) southwest of Flores Islands in the Azores. The remnant low degenerated into a trough early on September 8 before merging with a developing extratropical low later that day. The wave moved swiftly westward and organized into a tropical depression about 520 mi (835 km) south-southeast of the Cabo Verde Islands early on September 22. [19] The names not retired from this list will be used again in the 2024 season. In the satellite era (since 1966), the only Atlantic hurricane further east to be this strong in the tropics (south of 23.5°N) is Fred (2015)", "Tropical Storm Joyce Discussion Number 7", "Met Éireann briefing on Ex Tropical Storm Helene 4pm Monday 17th September – Met Éireann – The Irish Meteorological Service", "UK weather: Storm Ali brings danger-to-life warning with 80mph winds", "Tempête Isaac : en Martinique et en Guadeloupe, plus de peur que de mal", Tropical Cyclone Report: Tropical Storm Joyce, Tropical Cyclone Report: Tropical Depression Eleven, Tropical Cyclone Report: Tropical Storm Kirk, "Poultry farmer loses 2000 chickens during storm", "Arquipélago da Madeira em "alerta máximo" devido ao furacão Leslie", "Furacão Leslie: mais de 180 jogos cancelados na Madeira e duas exceções nas modalidades", "Épisode pluvio-orageux exceptionnel dans l'Aude le 15 octobre", "Tres muertos y más de 1900 viviendas afectadas por lluvias", "Al menos 9 muertos y miles de afectados por un temporal en Centroamérica", "Huracán Michael deja daños significativos en Cuba", "Hurricane Michael causes some destruction in western Cuba", Tropical Cyclone Report: Tropical Storm Nadine, "#Nadine has formed in the eastern tropical Atlantic", Florence and Michael retired by the World Meteorological Organization, National Hurricane Center's Atlantic Tropical Weather Outlook, Tropical Cyclone Formation Probability Guidance Product, Weather Underground tropical cyclone tracker, https://en.wikipedia.org/w/index.php?title=2018_Atlantic_hurricane_season&oldid=1016775100#Hurricane_Helene, Articles which contain graphical timelines, Creative Commons Attribution-ShareAlike License, This page was last edited on 9 April 2021, at 00:35. Jogging to the west-southwest, the cyclone remained near the coast and weakened to a tropical storm over eastern South Carolina early on September 15. [29] Farther inland, Alberto caused flooding in several states. On September 9, 2018, Florence, Isaac, and Helene were all churning up the North Atlantic. After convection to migrated closer to the circulation and the storm's wind field decreased in size, the cyclone became a tropical storm around 00:00 UTC on May 28. At 12:00 UTC on July 12, Chris became an extratropical cyclone well southeast of Newfoundland. Gradual organization ensued as the low drifted northward, with the shower and thunderstorm activity becoming better defined. [43] By the following day, Ernesto began accelerating northeastward due to the influence of the mid-latitude westerlies. [21] The Atlantic hurricane season officially ended on November 30, 2018. [44] Around 18:00 UTC, the cyclone peaked with maximum sustained winds of 45 mph (75 km/h) and a minimum barometric pressure of 1,003 mbar (29.6 inHg). The system steadily weakened thereafter due to upwelling and eyewall replacement cycles, with the storm falling below major hurricane intensity on September 13 as it neared the Carolinas. [18], The first forecast for the year was released by TSR on December 7, 2017, which predicted a slightly above-average season for 2018, with a total of 15 named storms, 7 hurricanes, and 3 major hurricanes. [14] Four days later, TSR issued their final forecast for the season, slightly increasing their numbers to 11 named storms, 5 hurricanes and only one major hurricane, with the reason of having two unexpected hurricanes forming by the beginning of July. Hurricane … After conditions became more favorable, Beryl regenerated into a subtropical storm near Bermuda at 12:00 UTC on July 14. 2018 Atlantic Hurricane Season: From Zero to 2017 Hurricane Florence, Isaac, Helene named, plus two disturbances On the next day, Florence underwent a second bout of rapid intensification, reaching Category 4 intensity again late on September 10. Temperature is important when trying to understand how strong storms can be. –––––––––––––––––––––––––––––––––––––––––––––––––––––––, Ahead of and during the season, several national meteorological services and scientific agencies forecast how many named storms, hurricanes, and major hurricanes will form during a season or how many tropical cyclones will affect a particular country. Michael caused at least $25 billion in property damage in the United States. [53] Heavy rainfall from the precursor tropical wave in Guinea triggered flooding, which claimed three lives in Doko. A tornado in Chesterfield County overturned cars, downed a number of power lines, deroofed several buildings, and destroyed a warehouse, killing a man inside. MODIS saw coldest cloud top temperatures were as cold as minus 70 degrees Fahrenheit (minus 56.6 degrees Celsius) in those areas. Southwesterly shear continues to affect now Tropical Storm Helene as it nears the Azores. [53] The remnants continued onwards to impact Ireland and the United Kingdom, prompting warnings for wind gusts up 65 mph (105 km/h) for southern and western areas of the United Kingdom. A building mid-level ridge halted Florence's northward movement, leading to a westward turn. [77] The flooding left 15 deaths, all in the Aude department. [19] The season produced sixteen tropical depressions, all but one of which further intensified into tropical storms. Florence weakened to a tropical depression over the western part of the state late on the next day before turning northward. Early on September 29, Kirk degenerated into an open tropical wave over the eastern Caribbean. [20] Florence, Helene, Isaac, and Joyce existed simultaneously for a few days in September, becoming the first time since 2008 that four named storms were active at the same time. These agencies include the Tropical Storm Risk (TSR) Consortium of University College London, the National Oceanic and Atmospheric Administration (NOAA) and Colorado State University (CSU). The extratropical low became ill-defined after emerging into the Bay of Biscay on the next day. When it became a tropical storm it was re-named Helene. At 06:00 UTC on October 3, Leslie strengthened into a hurricane and turned northward, but weakened back to a tropical storm later on the next day. NASA’s Goddard Space Flight Center. When NASA’s Terra satellite passed over the Eastern Atlantic Ocean on Sept. 12 it analyzed water vapor within Hurricane Helene. Most forecasting groups called for a below-average season due to cooler than normal sea surface temperatures in the tropical Atlantic and the anticipated development of an El Niño. [80] More than 22,700 people were directly affected throughout the three countries. Wind shear can tear a tropical cyclone apart or weaken it. However, the formation of Tropical Storm Alberto on May 25 marked the fourth consecutive year in which a storm developed before the official start of the season. The cyclone then accelerated due to the influence of the mid-latitude westerlies. Roughly 59,000 electrical customers lost power. On October 31, Oscar underwent an extratropical transition, a process it completed by 18:00 UTC that day about 605 mi (975 km) south-southeast of Cape Race, Newfoundland. Pulled slowly southeastward by a passing cold front, Chris intensified little throughout the rest of the day due to upwelling. Maximum sustained winds have increased to near 105 mph (165 kph) with higher gusts. [13] On August 2, CSU updated their forecast again, increasing their numbers to 12 named storms, 5 hurricanes, and 1 major hurricane, citing the increasing chance of a weak El Niño forming later in the year. Hurricane Helene was one of the most destructive tropical cyclones to affect the United States east coast. They will be replaced with Francine and Milton, respectively, for the 2024 season.[88]. Gordon resulted in approximately $200 million in damage throughout the United States. [32] Gusty winds in Puerto Rico left approximately 47,000 people without power. Michael, which peaked as a Category 5 hurricane with maximum sustained winds of 160 mph (260 km/h) and a minimum barometric pressure of 919 mbar (27.1 inHg), was the most intense tropical cyclone of the season and one of only four storms to make landfall in the United States mainland as a Category 5,[20][23] the others being the 1935 Labor Day hurricane, Hurricane Camille in 1969, and Hurricane Andrew in 1992. Although Debby's passage over a warm Gulf Stream eddy allowed it to maintain its intensity for a short time, the entrainment of dry air into its circulation and passage over cooler waters caused its deep convection to dissipate. After further organization, a tropical depression formed around 12:00 UTC on July 6 about 345 mi (555 km) south-southeast of Cape Hatteras, North Carolina.
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