Earlier today, Caribbean 360 reported that a tropical depression headed for the Windward Islands was likely to become Tropical Storm Harvey. A recent Sun Sentinel article confirmed (as of 15 minutes ago) that it has indeed become a tropical storm, that it has been given a 100 percent chance of becoming a tropical cyclone over the next two days, and that it is expected to become a hurricane by Monday morning. A tropical storm warning is now in effect for Barbados, St. Lucia, Martinique, and St. Vincent and the Grenadines, while a tropical storm watch has been issued for Dominica.
Tropical Storm Harvey is headed toward the Windward Islands at 18 mph and is expected to bring two to four inches of rain with it. Maximum winds are gusting up to 40 mph, forecasters said. Earlier today, the depression was 365 miles east of Barbados and 465 miles east of St Lucia and carrying maximum sustained winds near 35 miles per hour.
According to the National Hurricane Center (NHC) in Miami, the system is expected to produce rainfall totals of 2 to 4 inches across portions of the Windward Islands from Martinique southward to Grenada, which could cause life-threatening flash floods and mudslides.
For more information, see http://www.caribbean360.com/news/potential-tropical-storm-harvey-heading-windward-islands and http://www.sun-sentinel.com/news/weather/fl-reg-tropics-thursday-20170817-story.html