Advisories for Tropical Storm Don were initiated at 5 p.m. EDT. (Credit: NHC)
The fourth named storm of the Atlantic hurricane season formed late Monday in the Central Atlantic. But Tropical Storm Don — which was packing winds of 40 mph — was not expected to strengthen much and appeared to be no threat to the U.S.
And top winds were confined to a small area east of the center of circulation, the National Hurricane Center in Miami said. Don was expected to strengthen only slightly, withg winds of 45 mph forecast by Tuesday and Wednesday.
“The associated convection is not particularly well-organized, but there is a curved band located to the north of the center and a couple of bursts have formed closer to the small circulation center,” NHC forecaster Dan Brown said.
Although wind shear was low on Monday and the system was over warm water, Brown added: “Once the system enters the eastern Caribbean Sea, strong upper-level westerly winds and strong low-level easterly flow are likely to cause the small circulation to open up into a trough. As a result, dissipation is forecast within 72 hours.”
Tropical storm watches and warnings were posted for some of the Windward Islands, including Barbados, Trinidad and Tobago.
On the forecast track, Don would move due west, just north of the coast of South America, through Wednesday. In fact, some of the GFS Ensemble members bring Don into Venezuela. Whatever is left of the system by the end of the week is likely to wash ashore in Central America.
A disturbance to the east of Don was given a 30 percent chance of becoming a depression or named storm by the weekend. The next name on the Atlantic list is Emily.