On June 13, a non-tropical low pressure center developed just off the coast of the southeastern United States in association with a stalled warm front. It moved northeastward a little farther from land and encountered the hot waters of the Gulf stream; sea surface temperature anomalies were extremely high just off of the North Carolina. By the morning of June 14, a burst of convection had covered the low. It was designated Tropical Depression Two shortly after.
The system strengthened steadily during the next day despite moderate wind shear. As a result it was upgraded to Tropical Storm Bill. It also accelerated significantly on its northeastward path. By the afternoon of the 15th, Bill had reached its peak intensity of 60 mph winds, but was already beginning extratropical transition. The central thundestorm activity was displaced from the center by strong upper-level winds and the cyclone became extratropical that evening.
The above image shows Bill as a tropical storm on June 15.
Bill formed near land, but rapidly moved out to sea during its brief stint as a tropical cyclone.
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