Franklin Intensifies to a Hurricane

Former Tropical Storm Franklin intensified to a hurricane over the Atlantic Ocean south-southeast of Bermuda on Saturday morning. At 11:00 a.m. EDT on Saturday the center of Hurricane Franklin was located at latitude 23.5°N and longitude 66.7°W which put it about 620 miles (995 km) south-southwest of Bermuda. Franklin was moving toward the north-northwest at 7 m.p.h. (11km/h). The maximum sustained wind speed was 75 m.p.h. (120 km/h) and there were wind gusts to 90 m.p.h. (145 km/h). The minimum surface pressure was 989 mb.

Tropical Storm Franklin moved under the northeastern part of an upper level low centered near the southeastern Bahamas. When Franklin moved under the northeastern part of the upper level low, it moved into a region where there was less vertical wind shear. Less wind shear allowed the inner end of a rainband to wrap around the center of Franklin’s circulation. A small eye appeared to be forming at the center of Hurricane Franklin. Storms near the center of Franklin’s circulation generated upper level divergence that pumped mass away to the northeast of the hurricane. Bands of showers and thunderstorms were revolving around the center of Hurricane Franklin.

The strongest winds were occurring just to the northeast of the developing eye of Hurricane Franklin. Winds to hurricane force extended out 15 miles (25 km) to the northeast of the center of Franklin’s circulation. Winds to tropical storm force extended out 140 miles (220 km) from the center of Hurricane Franklin.

Hurricane Franklin will move through an environment favorable for intensification during the next 24 hours. Franklin will move over water where the Sea Surface Temperatures are near 30°C. Ir will move under an upper level ridge south of Bermuda. The ridge will enhance upper level divergence that will pump mass away from Franklin. The removal of mass will cause the surface pressure to decrease. Hurricane Franklin is likely to intensify during the next 24 hours.

Hurricane Franklin will move around the western part of a subtropical high pressure system over the Atlantic Ocean. The high pressure system will steer Franklin toward the north-northwest during the next 24 hours. On its anticipated track, Hurricane Franklin will move southwest of Bermuda.