Virgin Islands waters... elongated low pressure prevails across the north Caribbean and adjacent regional Atlantic tonight...with Tropical Storm Gustav slowly exiting Haiti to the west...and a low pressure center near 19.5 north...57 west...and drifting northwestward. This pattern will maintain an unusual and varying wind flow across the area waters through Friday. An upper level trough just north of Puerto Rico extends southwest across Hispaniola...and will act to significantly enhance thunderstorm activity across the area waters through at least through Thursday.

Wind variable less than 5 knots becoming southeast around 5 knots after midnight. Seas 1 feet. Isolated showers.

South winds 5 to 9 knots. Seas 1 feet. Scattered showers. Isolated thunderstorms in the afternoon.

South winds 5 to 8 knots. Seas 2 feet or less. Isolated showers.

South southwest winds 5 to 9 knots. Seas 2 feet or less. Scattered showers and isolated thunderstorms.

Southeast winds 6 to 11 knots. Seas 2 feet or less. Isolated thunderstorms in the evening...then isolated showers after midnight.

Southeast winds 7 to 12 knots. Seas 2 feet or less. Scattered showers.

East southeast winds 5 to 8 knots. Seas 2 feet or less. Isolated showers.

Southeast winds 5 to 7 knots. Seas 2 feet or less. Isolated showers.

North northeast winds 5 to 8 knots. Seas 2 feet or less. Isolated showers.