Based upon the latest position and forecast track, Tropical Storm Bertha is projected to pass within 100 miles of the British Virgin Islands in the next 12-24 hours. As a result skies will become increasingly cloudy with periods of moderate to heavy showers and isolated to scattered thunderstorms. These showers could cause flash flooding and landslides. As a result, a flash flood watch/warning may become necessary for the islands later this evening.
Jeff Masters, Weather Underground: "I don't see Bertha being stronger than a 60 mph tropical storm as it affects Puerto RIco and the Dominican Republic. Two of our best intensity models, the GFDL and HWRF, predicted in their 06Z Friday runs that Bertha would have winds of about 40 mph as it passed over Puerto Rico on Saturday."
Showers and thunderstorms have increased east of the center during the past couple of hours, and if this development trend continues a tropical storm could form later tonight or early Friday. Regardless of development, gale-force winds are likely to spread across portions of the central Lesser Antilles beginning by midday Friday.