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It may not develop into a cyclone, but should certainly affect diving and worse...
A large region of disturbed weather (Invest 97L), centered about 400 miles east of the northern Lesser Antilles Islands, is headed west-northwest at about 15 mph and will bring heavy rain showers and gusty winds to the northern Lesser Antilles Islands today and Sunday. These showers can be seen approaching the islands on Martinique radar this morning. Wind shear is a moderate 10 - 20 knots over 97L, and the waters beneath are very warm, 29°C, but recent satellite imagery shows that 97L's heavy thunderstorms are limited and not well organized. A pass from the Windsat satellite at 5:51am EDT showed a moderate wind shift associated with 97L, but nothing close to a closed circulation. Top winds were around 30 - 35 mph. The SHIPS model predicts that wind shear over 97L will rise to the high range, 20 - 30 knots, today through Monday, then decline. The ECMWF model is the only model currently showing significant development 97L in the next seven days. The model predicts 97L will be near Puerto Rico on Monday, the Dominican Republic on Tuesday, and Haiti on Wednesday, with the storm developing into a tropical depression on Wednesday just north of Haiti, then moving northwards through the Turks and Caicos Islands and out to sea on Thursday. NHC is giving 97L a 20% chance of developing into a tropical depression by Monday, and has not tasked the Hurricane Hunters to fly into the storm over the next two days. 97L will move at about 10 mph through the islands on Sunday through Wednesday, bringing the potential for an extended 3-day period of heavy rains for the islands in its path. Even if 97L does not develop into a tropical depression, its slow motion may result in life-threatening flash flooding and mudslides in Puerto Rico, the Dominican Republic, Haiti, and eastern Cuba as it moves past.