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Hurricane Season 2007: Melissa (Atlantic)
09.28.07
 
Tropical Depression Melissa Comes and Goes Quickly

Satellite image of Tropical Storm Melissa
Click image for enlargement.

Short-lived Tropical Depression Melissa faded into a remnant low pressure system on Monday, Oct. 1 in the central Atlantic Ocean after developing on Friday, Sept. 28.

Tropical Depression Fourteen became Tropical Storm Melissa on Saturday, Sept. 29 as of 5:00 a.m. EDT. By 11:00 a.m. EDT on Sunday, Sept. 30, she weakened to a tropical depression.

The National Hurricane Center issued its last advisory on the remains of Melissa at 5:00 p.m. EDT on Sept. 30. At that time, the center of what was then Tropical Depression Melissa was located near 16.3 north latitude and 34.0 west longitude or 665 miles west of the Cape Verde Islands. Melissa was moving west-northwest near 14 mph, and the maximum sustained winds were near 30 mph, with minimum central pressure of 1007 millibars.

The image above was made from the Tropical Rainfall Measuring Mission (TRMM) satellite data received on September 30, 2007 at 9:27 a.m. EDT (1327 UTC) and shows the horizontal pattern of rain intensity within the fading Melissa. It shows the heaviest rainfall at up to 20 mm/per hour ..8 inches/hour in the northwest quadrant of the storm (top left area of circulation).

For more information about how TRMM looks at rainfall, visit NASA's TRMM website at http://trmm.gsfc.nasa.gov/. TRMM is a joint mission between NASA and the Japanese space agency JAXA.

Rob Gutro Goddard Space Flight Center
Steve Lang SSAI/Goddard Space Flight Center
Image credit: NASA/SSAI, Hal Pierce




Three Active Tropical Cyclones in the Atlantic

GOES image of the three active tropical storms on Sept. 28, 2007
Click image to enlarge


The fourteenth tropical depression of the Atlantic Ocean hurricane season formed in the far eastern Atlantic Ocean on Friday, Sept. 28, bringing three active storms in the Atlantic in one week.

Hurricane Lorenzo just made landfall in eastern Mexico, and tropical depression Karen is fizzling in the central Atlantic.

At 11:00 a.m. EDT on Sept. 28, Tropical Depression #14 (TD#14) was located near 14.1 degrees north latitude and 26.5 degrees west longitude, or about 210 miles southwest of Africa's Cape Verde Islands.

The depression is moving toward the west near 7 mph. This general motion should continue today with a gradual turn to the northwest on Saturday, Sept. 29. TD#14's maximum sustained winds are near 35 mph with higher gusts. Some strengthening is possible during the next 24 hours. TD#14's minimum central pressure is 1008 millibars.

This image was created from data from the Geostationary Operational Environmental Satellite (GOES-12), which is operated by the National Oceanic and Atmospheric Administration. It was created by NASA's GOES Project, located at NASA's Goddard Space Flight Center, Greenbelt, Md. It shows all three tropical cyclones. Tropical Depression Lorenzo now over land in south-east Mexico, Tropical Storm Karen in the central Atlantic Ocean, and Tropical Depression #14 to the far right, in the far eastern Atlantic. Credit: Rob Gutro, Goddard Space Flight Center



A Look at Tropical Depression 14's Clouds in Two Ways

These two images from the Atmospheric Infrared Sounder (AIRS) on NASA's Aqua satellite show the coldest and highest clouds, as well as a visible image of the clouds in Tropical Depression 14.

A Look at the Coldest and Highest Cloud Tops

Satellite image of Tropical Depression 14
Click image for enlargement.

In this infrared image from September 28 at 14:59 UTC (12:59 p.m. EDT), created by data from the AIRS instrument, Tropical Depression #14 can be seen in the eastern Atlantic Ocean. On the far right of the image is the western African coast. The blue areas show clouds and rains. This AIRS image shows the temperature of the cloud tops or the surface of the Earth in cloud-free regions. The lowest temperatures (in purple) are associated with high, cold cloud tops that make up the top of the typhoon. The infrared signal does not penetrate through clouds. Where there are no clouds the AIRS instrument reads the infrared signal from the surface of the Earth, revealing warmer temperatures (orange and red).

Satellite image of Tropical Depression 14
Click image for enlargement.

The second image is an AIRS visible image that shows the clouds of Tropical Depression 14.

Rob Gutro
Goddard Space Flight Center
Images credit: NASA/JPL