Tropical Storm Chantal formed over the central tropical Atlantic late Sunday night and, at 8:00 am EDT on Monday, was located about 630 miles east-southeast of Barbados, moving towards the west near 26 mph.
According to the National Hurricane Center in Miami, a west-northwestward motion at about the same forward speed is expected over the next couple of days.
On the forecast track, the centre of Chantal should reach the Lesser Antilles early Tuesday and move into the eastern Caribbean Sea later on Tuesday.
Maximum sustained winds remain near 40 mph, with higher gusts. Some increase in strength is forecast during the next 48 hours.
Tropical-storm-force winds extend outward up to 60 miles from the centre.
Interests elsewhere in the eastern Caribbean should monitor the progress of Chantal.
Tropical storm conditions are expected within the warning area, and are possible in the watch area by early Tuesday. Chantal is expected to produce rain accumulations of 2 to 4 inches over the Leeward and Windward Islands, with maximum amounts of 6 inches possible.