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| - On July 25, an area of thunderstorms part of the ITCZ moved off the Senegal coast into the Atlantic Ocean. The once compact thunderstorm complex dispersed and spread to a greater area, now filled with mostly low clouds. At the time, dry air from the Saharan Air Layer affected the system, preventing it from organizing. Two days later, however, the disturbance began to acquire spin. Additonal convection formed from the wave, and the National Hurricane Center (NHC) noted the large organized area, giving it a "low" 20% chance of formation late on July 28. The wave was designated as Invest 91L shortly after. Invest 91L continued to become better defined as it moved westwards. Thunderstorm activity soon collected towards the center, and the NHC gave the in
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| abstract
| - On July 25, an area of thunderstorms part of the ITCZ moved off the Senegal coast into the Atlantic Ocean. The once compact thunderstorm complex dispersed and spread to a greater area, now filled with mostly low clouds. At the time, dry air from the Saharan Air Layer affected the system, preventing it from organizing. Two days later, however, the disturbance began to acquire spin. Additonal convection formed from the wave, and the National Hurricane Center (NHC) noted the large organized area, giving it a "low" 20% chance of formation late on July 28. The wave was designated as Invest 91L shortly after. Invest 91L continued to become better defined as it moved westwards. Thunderstorm activity soon collected towards the center, and the NHC gave the in vest a 70% chance for formation. As the disturbance neared the Lesser Antilles, multiple aircraft recons and Hurricane Hunter aircraft examined the storm, failing to find a closed circulation in Invest 91L. Soon, the storm became elongated due to shear, and the most westerly part of the system detached and formed its own wave as Invest 91L continued to move west. Convection abruptly exploded to the east of the storm mid-day on August 1. A wall of thunderstorms formed as it neared the Antilles, stretching from Guadeloupe to Barbrados. Hours later, the exposed circulation center made landfall on Dominica. As it did so, thunderstorm activity formed over the circulation, hiding it from satellite imagery. The wave progressively became better defined and was designated as Tropical Storm Emily late on August 1.
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