Tropical Depression 27 Forms Southeast of Bermuda

Tropical Depression Twentyseven formed southeast of Bermuda on Monday morning.  At 8:00 a.m. EDT on Monday the center of Tropical Depression Twentyseven was located at latitude 25.8°N and longitude 55.5°W which put it about 720 miles (1155 km) southeast of Bermuda.  The depression was nearly stationary.  The maximum sustained wind speed was 35 m.p.h. (55 km/h) and there were wind gusts to 45 m.p.h. (75 km/h).  The minimum surface pressure was 1003 mb.

More thunderstorms developed near the center of a low pressure system southeast of Bermuda on Monday morning and the National Hurricane Center designated the system as Tropical Depression Twentyseven.  The distribution of thunderstorms around the newly formed depression was asymmetrical.  Many of the thunderstorms were occurring in bands in the eastern half of the depression.  Bands in the western half of the depression consisted primarily of showers and lower clouds.  Storms near the center of circulation began to generate upper level divergence which pumped mass away to the east of the depression.

Tropical Depression Twentyseven will move through an environment that will be somewhat favorable for intensification during the next 24 hours.  The depression will move over water where the Sea Surface Temperature is near 28°C.  It will be south of an upper level trough.  The trough will produce westerly winds which will blow toward the top of the depression.  Those winds are contributing to the asymmetrical distribution of thunderstorms and they will cause moderate vertical wind shear.  The shear will inhibit intensification but it will not be strong enough to keep the depression from strengthening into a tropical storm.  The upper level trough will move northeast in a day or so and the wind shear will decrease.  The depression could intensify into a hurricane later this week.

Tropical Depression Twentyseven will be in an area where the steering winds are weak during the next day or so.  After that time a ridge of high pressure will develop northeast of the depression.  The ridge will start to steer the depression toward the northwest.  On its anticipated track the depression could approach Bermuda by the end of the week.  It could be a hurricane when it approaches Bermuda.