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GOES-13 sees a weaker Hurricane Julia in the 'tropical trio'
Date:9/16/2010

GOES-13 satellite imagery this morning showed the "tropical trio": Tropical Storm Karl over the Gulf of Mexico, Hurricane Igor in the central Atlantic, and a waning Hurricane Julia in the eastern Atlantic Ocean. Hurricane Julia has now lost her Category 4 Hurricane status, and is currently a Category 2 hurricane in the eastern Atlantic and weakening. Wind shear, cooler sea surface temperatures and warmer cloud top temperatures all spell a weaker Julia.

The Geostationary Operational Environmental Satellite known as GOES-13 that monitors weather over the U.S. East Coast and the Atlantic Ocean basin captured an amazing visible image of the three tropical cyclones at 1145 UTC (7:45 a.m. EDT).

GOES satellites are operated by NOAA. The NASA GOES Project at NASA's Goddard Space Flight Center in Greenbelt, Md. uses the data from GOES satellites and creates images and animations.

In this morning's GOES-13 image, Karl is a tightly wound tropical storm that appears to be strengthening today over the Bay of Campeche. Farther to the east and in the open waters of the central Atlantic, the massive and powerful Hurricane Igor spins toward Bermuda. Igor is twice as large as Hurricane Julia today as is evident in the GOES-13 image.

Igor's 550 mile cloud cover dwarfs Karl (in the Gulf of Mexico) and Hurricane Julia (which is about 280 miles in diameter) located in the eastern Atlantic Ocean. In the GOES-13 visible image, Julia's eye is no longer visible indicating that the storm has weakened considerably over the last day.

At 5 a.m. EDT today, Sept. 16, Hurricane Julia's maximum sustained winds were near 105 mph. She is centered about 875 miles west-northwest of the Cape Verde Islands, near 21.2 North and 36.2 West. She's moving northwest near 18 mph and her minimum central pressure is 970 millibars.

What is Weakening Hurricane Julia?

Wind shear and cooler sea surface temperatures are responsible for Julia's
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Contact: Rob Gutro
Robert.j.gutro@nasa.gov
443-858-1779
NASA/Goddard Space Flight Center
Source:Eurekalert  

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