Tropical Depression One (2009)
On May 28, the NHC started to monitor the storm again and on 11:00 am EDT (1500 UTC), they declared the storm to be a tropical cyclone and named it Tropical Depression One. At that time, the storm's location was about 310 mi (500 km) south of Providence, Rhode Island. After it was named as a depression, the storm showed deep convection and the center of circulation was at the northwestern part of the storm. The reason why the depression restrengthened was because of lower wind shear and warmer ocean waters from the Gulf Stream. Later that day, the depression started to weaken when it moved into an area with higher wind shear and colder ocean waters. Around 7:30 pm EDT (2330 UTC), a QuikSCAT satellite flew over the depression and found tropical storm-force winds. But the NHC thought the depression didn't strengthen and that winds were affected by rain. After the satellite passed over the depression, the center of circulation moved closer to the northwest edge of the storm and convection started to decrease.