page_title: Tropical Depression One (2009)
hierarchical_section_title: Tropical Depression One (2009)
caption_attribution_description: English: Shower activity has increased this morning in association with the area of low pressure located about 225 miles east-northeast of Cape Hatteras North Carolina. The low is currently moving to the northeast at 15 MPH along the relatively warm waters of the gulf stream. This system still has some potential to become a tropical cyclone over the next 12-24 hours but is not expected to threaten any land areas.
context_page_description: Tropical Depression One was the northernmost forming Atlantic tropical cyclone on record in the month of May. Upon being declared a tropical depression on May 28, it marked the third time that a pre-season storm formed in three consecutive years. The first tropical cyclone to develop during the 2009 Atlantic hurricane season, the depression originated from a disorganized area of low pressure off the coast of North Carolina, and quickly developed over the Gulf stream. After attaining winds of 35 mph along with a minimum pressure of 1006 mbar, the depression began to weaken due to increasing wind shear and cooling sea surface temperatures. During the afternoon of May 29, convection associated with the system was significantly displaced from the center of circulation; this led the National Hurricane Center to issue their final advisory on the depression as it had degenerated into a remnant-low pressure area. As a tropical cyclone, Tropical Depression One had no effects on land; however, the precursor to the depression brought minor rainfall and light winds to parts of coastal North Carolina.
context_section_description: Tropical Depression One was the northernmost forming Atlantic tropical cyclone on record in the month of May. Upon being declared a tropical depression on May 28, it marked the third time that a pre-season storm formed in three consecutive years. The first tropical cyclone to develop during the 2009 Atlantic hurricane season, the depression originated from a disorganized area of low pressure off the coast of North Carolina, and quickly developed over the Gulf stream. After attaining winds of 35 mph (55 km/h) along with a minimum pressure of 1006 mbar (hPa; 29.71 inHg), the depression began to weaken due to increasing wind shear and cooling sea surface temperatures. During the afternoon of May 29, convection associated with the system was significantly displaced from the center of circulation; this led the National Hurricane Center to issue their final advisory on the depression as it had degenerated into a remnant-low pressure area. As a tropical cyclone, Tropical Depression One had no effects on land; however, the precursor to the depression brought minor rainfall and light winds to parts of coastal North Carolina.  Its track, formation, and timing were relatively similar to Tropical Storm One of the 1940 Atlantic hurricane season.
caption: Tropical Depression One off the U.S. East Coast on May 28
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