At 1100 PM AST (0300 UTC), the center of Tropical Storm Dorian was located by an Air Force Reserve Unit Hurricane Hunter aircraft near latitude 13.2 North, longitude 59.7 West.
Dorian is moving toward the west-northwest near 13 mph (20 km/h) and this motion is expected to continue through Tuesday night, followed by a turn toward the northwest on Wednesday.
On the forecast track, the center of Dorian is expected to move near or over the Windward Islands tonight and move into the eastern Caribbean Sea on Tuesday.
Dorian is forecast to pass near or south of Puerto Rico on Wednesday, move near or over eastern Hispaniola, and move north of Hispaniola on Thursday. Maximum sustained winds are near 50 mph (85 km/h) with higher gusts.
Some strengthening is forecast during the next 48 hours, and Dorian is expected to be a hurricane when it moves near Puerto Rico and eastern Hispaniola.
Tropical-storm-force winds extend outward up to 45 miles (75 km) from the center. A wind gust to 55 mph (89 km/h) was recently reported in Barbados. The estimated minimum central pressure is 1003 mb (29.62 inches).