Tropical Storm Tammy moved away from Bermuda on Saturday. At 11:00 a.m. EDT on Saturday the center of Tropical Storm Tammy was located at latitude 33.3°N and longitude 58.7°W which put it about 360 miles (580 km) east-northeast of Bermuda. Tammy was moving toward the east at 12 m.p.h. (19 km/h). The maximum sustained wind speed was 50 m.p.h. (80 km/h) and there were wind gusts to 65 m.p.h. (105 km/h). The minimum surface pressure was 985 mb.

Tropical Storm Tammy weakened on Saturday as it moved under the southern extent of the upper level westerlies in the middle latitudes. The upper level westerly winds blew toward the top of Tammy’s circulation and they also caused strong vertical wind shear. The wind shear caused the distribution of thunderstorms in Tropical Storm Tammy to become asymmetrical. Thunderstorms were occurring in bands in the eastern side of Tammy’s circulation. Bands in the western half of Tropical Storm Tammy consisted primarily of showers and lower clouds. Winds to tropical storm force extended out 140 miles (220 km) from the center of Tammy’s circulation.

Tropical Storm Tammy will move through an environment that will be unfavorable for intensification during the next 24 hours. Tammy will move over water where the Sea Surface Temperatures are near 25°C. The upper level westerly winds will continue to cause strong vertical wind shear. The combination of marginal Sea Surface Temperatures and strong vertical wind shear will continue to create an environment unfavorable for intensification during the next 24 hours.

Tropical Storm Tammy will move around the northern side of a high pressure system over the eastern Atlantic Ocean. The high pressure system will steer Tammy toward the east during the next 24 hours. On its anticipated track, Tropical Storm Tammy will move farther away from Bermuda.