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Tropical Storm Emily2011[ندعوك للتسجيل في المنتدى أو التعريف بنفسك لمعاينة هذه الصورة]
2011 Atlantic hurricane season
Tropical Storm Emily was the fifth named storm of the 2011 Atlantic hurricane season. Emily developed from a strong tropical wave that tracked the open Atlantic for several days in late July. The wave remained fairly disorganized, lacking a defined circulation. By July 31, it approached the Lesser Antilles and became better defined, producing inclement weather over much of the area. Late on August 1, it finally developed a closed circulation center, prompting the National Hurricane Center to declare the formation of Tropical Storm Emily just after it had crossed the islands. The storm remained fairly disorganized as it proceeded into the Caribbean, though it brought strong thunderstorms and gusty winds to many areas along its path. On August 4, Emily was declassified as a tropical cyclone after the mountainous areas of Hispaniola disrupted its weak circulation; however, its remnants continued to produce heavy precipitation over the territory.
Despite its poor organization, Emily wrought havoc across many Caribbean nations. Gusty winds felled trees and heavy rains triggered widespread flooding throughout the Lesser Antilles; any significant damage was confined to Martinique, however, where one fatality occurred. In Puerto Rico, similar floods affected many residences and roads, with infrastructural losses in the territory estimated at $5 million. Even after dissipation, the remnants of Emily continued to produce prolonged rainfall over much of Hispaniola. Subsequent extensive floods and mudslides in the Dominican Republic displaced over 7,000 residents, and three people drowned in the capital of Santo Domingo as a result of the storm. In neighboring Haiti, hundreds of homes were flooded in the Artibonite Department, prompting evacuations. Only minor wind damage occurred throughout the country's southern peninsula, but one death was reported in the region.
Tropical Storm Emily
tropical storm (SSHS)
Tropical Storm Emily near Hispaniola on August 3
Formed August 1, 2011
Dissipated August 4, 2011
50 mph (85 km/h)
Lowest pressure 1003 mbar (hPa; 29.62 inHg)
Fatalities 4 direct, 1 indirect
affected Haiti, Dominican Republic, Lesser Antilles, Puerto Rico
Part of the
The cyclogenesis of Tropical Storm Emily was complicated, extending over several days from late July into early August. An easterly tropical wave—an equatorward trough of low pressure moving generally westward—exited the west African coast in the fourth week of July, at which point it became largely embedded within the monsoon trough. Oriented north to south, the wave supported little to no precipitation for a day or two as it traversed the open Atlantic. By July 28, a weak low-pressure center developed along its southern periphery, and over time clusters of moderate, albeit isolated convection increased around the broad wave axis. Atmospheric conditions favored additional development into a tropical cyclone; an anticyclonic circulation soon formed over the system, creating a supportive upper-level environment. It accordingly became better defined over the next couple of days, retaining unusually low surface pressures as well as concentrated showers and thunderstorms. Following a retrace toward the west-northwest, the threat to nearby land became relative to higher chances of development, with several forecast models projecting a path directly into the northeastern Caribbean.
During the morning of July 31, the large low markedly gained in organization, and the National Hurricane Center (NHC) noted it was close to becoming a tropical depression. Later that day, however, the mean low-pressure envelope became increasingly elongated; its westernmost component promptly detached to form a separate convective system. This new disturbance featured widely scattered convection, with rainbands briefly impacting the Lesser Antilles. As the vigorous low closed in on the Leeward Islands, little change initially occurred in its structure the next day, though associated surface winds rose to near tropical storm-force. A reconnaissance flight into the system finally revealed a well-defined circulation center near the deep convection mass, passing just to the south of Dominica. Correspondingly, the NHC marked the formation of Tropical Storm Emily around 2350 UTC August 1, as it accelerated toward the west in response to high pressure to its north.
Emily moving away from the Windward Islands
With a relatively dry environment along its projected path, Emily was expected to strengthen only gradually until its passage through the Greater Antilles. For several hours into August 2, the cyclone fluctuated little in intensity and organization, and there were few indications of developing banding features. Though the storm's appearance improved on satellite images, reconnaissance found it to remain poorly organized, and at the time several forecast models even supported dissipation prior to landfall in Hispaniola. For the rest of its journey across the eastern Caribbean, the low-level center of the storm became exposed from the deepest thunderstorm activity due to moderate wind shear aloft. On August 4, a brief increase in organization of the cloud pattern and convective banding near the center became notable as the upper outflow over the cyclone expanded. By then, Emily proceeded to track just south of the Dominican Republic, dropping heavy precipitation over the area. Due to the adjacent high terrain, its weak circulation became increasingly disrupted; the cyclone degenerated into an open trough around 2100 UTC that day.
The remnant low proceeded northwestward into the Bahamas, where the NHC assessed a high chance of redevelopment based on relenting upper winds
In light of high potential for tropical cyclone development, Météo-France declared yellow cyclone alerts for Guadeloupe and Martinique, warning of imminent squally weather. Due to the presence of Emily, officials in Puerto Rico promptly ordered the preparation of over 400 storm shelters, and ensured adequate water supply island-wide. Government workers were dismissed the morning prior to the passage of the storm; national courtrooms opted to remain closed during that time. A
dditionally, a state of emergency was declared for the entire island prior to Emily's arrival. The United States Coast Guard issued a statement urging residents of Puerto Rico and the U.S. Virgin Islands to avoid recreational boating and swimming until Emily passes. JetBlue Airways announced that it would be waiving fees for flights into the Dominican Republic, due to inclement conditions being caused by Emily. Four cruise ships, Oasis of the Seas, Freedom of the Seas, Carnival Dream and Carnival Liberty altered their courses through the Caribbean to avoid impact.
In Haiti, about 630,000 people are still living in tents across areas devastated by the 12 January 2010 earthquake. Due to the lack of sturdy structure to ride out a storm, fears arose over how they would fare with a tropical cyclone passing through the country. Emergency officials in the country set aside 22 large buses to evacuate thousands of people at the risk of flooding. Additionally, residents were urged to conserve food and safeguard their belongings. The United Nations placed 11,500 troops in the country on standby to assist in recovery efforts should they be necessitated. The International Federation of Red Cross and Red Crescent Societies also put emergency teams on standby to deliver food support in addition to the 125,000 people already being assisted
Intense rainbands produced gusty winds and dropped heavy precipitation in Martinique, triggering widespread street flooding and inundating homes. At the height of the storm, power was lost to roughly 5,000 residences, though the outages were brief and confined to the southeast of the island. A large landslide occurred in the capital of Fort-de-France as a consequence of excessive soil saturation, prompting some 40 families to evacuate the area. In the city, at least 29 houses were severely affected by flooding; a man was electrocuted and killed by an exposed wire in his flooded home.
In Guadeloupe, damage from the storm was limited; potent gusts uprooted numerous trees and blew debris onto streets throughout Basse-Terre. One road was blocked off to traffic during its passage as a precautionary measure, but was reopened soon thereafter. Enhanced moisture produced intermittent torrents over the Virgin Islands, with localized totals of no more than 1 inch (25 mm). Winds in the area were also limited; the highest gust was experienced on Buck Island, at 52 mph (83 km/h).
While moving little near Puerto Rico, Emily brought prolonged tropical storm conditions to many parts of the island. High winds damaged an electrical grid, cutting off power to about 18,500 customers; roughly 6,000 people were left without drinking water during the storm. Dozens of residents evacuated to shelters, in particular those living near risk zones. Torrential rains of up to 10 inches (250 mm) overflowed three rivers, which resulted in the flooding and subsequent closure of the PR-31 highway and PRI-3 intersection. Throughout the island, multiple other roads were made impassable by landslides and fallen objects; infrastructural damage surmounted $5 million, according to preliminary estimates. Additionally, the two-day suspension of about 280,000 employees—about 30 percent of the territory's workforce—affected the local economy significantly, with capital losses estimated at $55 million.
In San Lorenzo, imminent bridge collapse lead to the isolation of about 25 families. Flooded homes and cluttered streets were reported in Ceiba, with one residential gate collapsing in the municipality. The agricultural sector also sustained losses from the storm; in Yabucoa, heavy rains washed out 1,200 acres (500 ha) of banana seedlings.
View from Santo Domingo just prior to the passage of the storm
Albeit disorganized, Emily and its remnants dropped extensive precipitation across the Dominican Republic, with maximum totals of up to 21 inches (528 mm) recorded in Neiba. Among other consequences, severe flooding and isolated mudslides left at least 56 isolated from surrounding areas. The storm displaced up to 7,534 people throughout the country, of which 1,549 sought refuge in storm shelters. Consecutive hours of rainfall resulted in the overflow of some rivers, although no significant damage was reported to adjacent areas. Offshore, squalls generated rough waves that briefly affected boating operations and oceanside homes. To the east of Santo Domingo, two men drowned after they were caught in a swollen river. A third drown fatality occurred elsewhere in the capital, reportedly due to flooding.
Owing to its promptly dissipation, Emily spared neighboring Haiti from the devastation initially anticipated. At least 235 people required evacuation in Jacmel and Tabarre at the height of the storm, as well as 65 prisoners from Gonaïves and Miragoâne. In the Artibonite Department, civil protection teams evacuated roughly 300 residents in the region. Rainfall triggered floods that damaged over 300 homes throughout the country, and several cholera treatment centers were destroyed.At the risk of new outbreaks, anti-bacterial sterilizers were distributed to sanitize possibly contaminated waters.
Rising flood waters posed a threat to at least 50 homes in L'Estère, with a dozen homes already reported to be inundated in adjacent areas] Considerable damage also occurred in the country's southern peninsula, where several homes and villages were submerged by flood waters. A body was recovered from a ravine near Les Cayes, but the exact cause of death remains disputed; another person in the area sustained injuries after being hit by a fallen tree. Additionally, high winds caused some property damage in Léogâne and Jacmel