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Atlantic Ocean's First Tropical Depression… Gone

Reports and Proceedings

NASA/Goddard Space Flight Center

Atlantic Ocean's First Tropical Depression… Gone

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The Atlantic Ocean's first tropical depression broke down on Friday, May 29, and by June 1 it was a memory.

On May 29, Tropical Depression One (TD#1) weakened into a remnant low pressure area over colder waters and winds that helped tear it apart.

By 5 p.m. EDT that evening, the National Hurricane Center said it lost its tropical characteristics. At that time, it remnants were near 40.3 north latitude and 62.3 west longitude, about 305 miles south-southeast of Halifax, Nova Scotia, Canada. It was later absorbed by a cold front that developed northeast of its center.

The infrared imagery of the Atmospheric Infrared Sounder (AIRS) instrument on NASA's Aqua satellite that's used to identify the cloud temperatures in tropical cyclones captured TD#1 before it "died."

The infrared image, taken on May 29, at 1:35 p.m. EDT (17:35 UTC) shows the cold cloud temperatures in TD#1. There's a large temperature difference between typhoon's cloudtops and the warmer ocean waters. The lowest temperatures (in purple) are associated with high, cold cloud tops in the fading TD#1. The blue areas are around 240 degrees Kelvin, or minus 27 Fahrenheit. In this image, TD#1 is seen as the small round blue area southeast of Nova Scotia, Canada.

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Credit: NASA


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