Tropical Storm Franklin Moves North of Hispaniola

Tropical Storm Franklin moved north of Hispaniola on Thursday. At 11:00 a.m. EDT on Thursday the center of Tropical Storm Franklin was located at latitude 22.2°N and longitude 69.9°W which put it about 90 miles (145 km) east-northeast of Grand Turk Island. Franklin was moving toward the northeast at 7 m.p.h. (11 km/h). The maximum sustained wind speed was 60 m.p.h. (95 km/h) and there were wind gusts to 75 m.p.h. (120 km/h). The minimum surface pressure was 998 mb.

The circulation around Tropical Storm Franklin began to strengthen on Thursday morning as Franklin moved over the Atlantic Ocean north of Hispaniola. Even though Tropical Storm Franklin was getting stronger, the distribution of thunderstorms was asymmetrical. Most of the thunderstorms were occurring in bands in the eastern half of Franklin’s circulation. Bands in the western half of the circulation consisted primarily of showers and lower clouds. The distribution of wind speeds was also asymmetrical. Winds to tropical storm force extended out 115 miles (185 km) in the eastern half of Franklin. Winds to tropical storm force only extended out 35 miles (55 km) in the western half of the circulation around Franklin.

Tropical Storm Franklin will move through an environment somewhat favorable for intensification during the next 24 hours. Franklin will move over water where the Sea Surface Temperatures are near 30°C. It will move under the eastern part of an upper level trough that is east of Florida. The upper level trough will produce westerly winds that will blow toward the top of Franklin’s circulation. Those winds are contributing to the asymmetrical distribution of thunderstorms and wind speeds. The upper level westerly winds will cause moderate vertical wind shear. The vertical wind shear will inhibit intensification, but it may not be strong enough to prevent intensification. Tropical Storm Franklin could get a little stronger during the next 24 hours.

The upper level trough east of Florida will steer Tropical Storm Franklin toward the east-northeast during the next 24 hours. On its anticipated track, Tropical Storm Franklin will move farther away from the Dominican Republic and the Turks and Caicos. Franklin is forecast to remain well to the north of Puerto Rico.