Tropical Depression Fifteen was a tropical depression that did not reach tropical storm status during the 2007 Atlantic hurricane season. The cyclone developed on October 11 in the open Atlantic Ocean well southeast of Atlantic Canada. The cyclone was short-lived, and dissipated the next day on October 12, due to strong vertical shear associated with an upper-level trough. The depression eventually became an extratropical cyclone that attained gale force winds.
There were no damage or deaths associated with the short-lived tropical depression.
|Formation||October 11, 2007|
|Dissipation||October 12, 2007|
|Highest winds||35 mph|
|Lowest pressure||1011 mbar|
|Part of the||2007 Atlantic hurricane season|
Beginning on October 4, a large and complex area of disturbed weather extended from the northwestern Carribean Sea into the western Atlantic Ocean. On October 8, a surface low developed along the eastern end of the activity about 150 miles northeast of the Turks and Caicos Islands. As the low moved east-northeast, the associated convection gradually became better organized, and by 1200 UTC October 11, it developed into Tropical Depression Fifteen while about 645 miles east-southeast of Bermuda. After developing, the cyclone moved eastward, slowing its forward speed. On October 12, the depression began to drift slowly northward. Late on October 11, an upper-level trough moved across the system, resulting in strong northerly shear in the wake of the trough. The shear caused the convection associated with the depression to weaken, and late on October 12, the depression succumbed to the shear as it degenerated into a remnant low while located about 790 miles east of Bermuda. On October 13, the low moved northwest, then on October 14, turned northeast and merged with a frontal zone. The resulting extratropical cyclone developed gale force winds on October 16, and maintained them until it was absorbed by a larger extratropical low north of the Azores the next day.