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Tropical Storm Debby (1994)
Tropical Storm Debby was a weak but costly tropical cyclone that affected the Lesser Antilles in September 1994. It was the fourth named tropical storm of the 1994 Atlantic hurricane season; it developed on September 9 east of Barbados. Debby made landfall on Saint Lucia early on September 10, producing heavy rainfall and tropical storm-force wind gusts. The rains caused flooding and landslides, damaging about half of the island's banana plantations. Several villages were isolated after roads and bridges were damaged. Damage totaled about $103 million (1994 USD). On nearby Dominica, Debby damaged crops and fisheries.
While Debby was crossing Saint Lucia, its strongest thunderstorms were located north and east of the center due to wind shear. A station in Martinique reported hurricane-force winds, and about 20,000 people on the island lost power. After entering the eastern Caribbean Sea, Debby attained peak winds of , although continued wind shear caused the storm to dissipate on September 11. In Puerto Rico, one person died due to high waves. The storm caused power outages and flooding in the Dominican Republic. Throughout its path, Debby killed nine people.
==Meteorological history==
The origins of Tropical Storm Debby were from a tropical wave that moved off the coast of Africa on September 4. By September 6, satellite images indicated a vigorous tropical wave with intense convection about midway between Africa and the Lesser Antilles. Encountering northwesterly vertical wind shear, convection markedly decreased and weakened on the following day, only to redevelop on September 8 after the shear dropped. Post-analysis indicate that the sixth tropical depression of the season developed on September 9 at 1200 UTC, about 185 mi (300 km) east of Barbados; however, it was not operationally classified as Tropical Depression Six until almost 24 hours later. Early on September 10, satellite imagery indicated a surface circulation just north of Barbados,〔 around which time the National Hurricane Center (NHC) initiated advisories.〔
The increasing organization of the tropical depression prompted a reconnaissance aircraft investigation, which reported flight-level winds of around in an intense rainband northeast of the center. The same flight estimated surface winds of 58 mph (93 km/h), which indicated that the depression intensified into Tropical Storm Debby.〔 However, ongoing wind shear removed all thunderstorms from the circulation.〔 At 0300 UTC on September 10, the storm made landfall on Saint Lucia with winds of .〔 Although Debby was not very well-organized on satellite imagery, stations on Martinique and nearby ships reported that the storm intensified further in the eastern Caribbean Sea to a peak strength of at 0600 UTC.〔 Such winds were not known while the storm was active, and around the time of Debby's peak intensity, the NHC operationally estimated winds of only . The storm continued quickly to the west-northwest, affected by strong wind shear while maintaining strong winds.〔 A reconnaissance flight on September 12 did not observe a closed circulation; as a result, it is estimated that Debby dissipated at around 0600 UTC that day to the south of Puerto Rico. The remnants of Debby continued to the west and diminished over Mexico on September 15, although residual clouds spread into the Gulf of Mexico.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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