Tropical Storm Dexter moved south of Nova Scotia on Tuesday evening.  At 11:00 p.m. EDT on Tuesday the center of Tropical Storm Dexter was located at latitude 38.9°N and longitude 61.3°W which put the center about 410 miles (660 km) south-southeast of Halifax, Nova Scotia.  Dexter was moving toward the east-northeast at 12 m.p.h. (19 km/h).  The maximum sustained wind speed was 40 m.p.h. (65 km/h) and there were wind gusts to 50 m.p.h. (80 km/h).  The minimum surface pressure was 1005 mb.

The structure of Tropical Storm Dexter did not change much on Tuesday.  Strong westerly winds in the upper troposphere were blowing toward the top of Dexter’s circulation.  Those winds were causing strong vertical wind shear.  The vertical wind shear was making the distribution of thunderstorms asymmetrical.  Thunderstorms were still forming in bands in the eastern side of Tropical Storm Dexter.  Bands in the western side of Dexter’s circulation consisted primarily of showers and lower clouds.

Winds to tropical storm force extended out 80 miles (130 km) from the center of Tropical Storm Dexter.

Tropical Storm Dexter will move through an environment unfavorable for intensification of a tropical cyclone during the next 24 hours.  Dexter will move over water where the Sea Surface Temperatures are near 26°C. An upper level trough over eastern Canada U.S. will continue to cause strong vertical wind shear.  The strong wind shear will prevent Tropical Storm Dexter from intensifying as a tropical cyclone.  However, Tropical Storm Dexter will make a transition to and extratropical cyclone during the next day or two.  Dexter is likely to get stronger when it starts to make a transition to an extratropical cyclone.

The upper level trough over eastern Canada U.S. will steer Tropical Storm Dexter toward the east-northeast during the next 24 hours. On its anticipated track, Tropical Storm Dexter will move south of Newfoundland on Wednesday.