NASA infrared imagery sees tropical depression 14 becomes 12th tropical storm: Lisa

Sep 21, 2010
This infrared image of Tropical Storm Lisa from the AIRS instrument aboard NASA's Aqua satellite shows that the strongest convection, highest thunderstorms and heaviest rainfall on Sept. 20 at 15:05 UTC (11:05 a.m. EDT) were concentrated in the system's center (purple) and there were bands of thunderstorms surrounding the center. Those cloud top temperatures were as cold as -94 Fahrenheit, indicating strong thunderstorms. Credit: NASA/JPL, Ed Olsen

This Atlantic hurricane season has now spawned 14 tropical depressions and 12 of them have strengthened into tropical storms. The latest is now called Tropical Storm Lisa and is in the Eastern Atlantic Ocean. NASA's Aqua satellite flew over Lisa when she was still a low pressure area, but showed a center of circulation and banding of thunderstorms circling it, indicating the storm was getting organized.

The Atmospheric Infrared Sounder (AIRS) instrument that flies aboard NASA's Aqua satellite captured "Lisa" when she was still a low pressure area yesterday, Sept. 20 at 15:05 UTC (11:05 a.m. EDT). AT that time, infrared imagery showed the strongest convection, highest thunderstorms and heaviest rainfall were concentrated in the system's center and there were bands of thunderstorms surrounding the center. Those cloud top temperatures were as cold as -94 Fahrenheit (-70 Celsius), indicating strong thunderstorms. AIRS data indicated that overnight, those cloud top temperatures cooled. That indicates that the thunderstorms that are powering Lisa are higher, colder and stronger than they were yesterday. helped forecasters see that Tropical Depression 14 became better organized and that it had become a tropical storm. also showed that bursts of deep convection are forming near Lisa's circulation center.

At 5 a.m. EDT on Sept. 21, Tropical Depression 14 strengthened into Lisa with near 40 mph. Lisa is in the Eastern Atlantic Ocean, about 530 miles west-northwest of the Cape Verde Islands near 17.7 North and 31.8 West. Lisa is moving north near 5 mph and is expected to turn to the north-northwest tomorrow, and then west-northwest on Thursday. The National Hurricane Center in Miami, Fla. noted that some strengthening is possible. Lisa's minimum central pressure is 1005 millibars.

Because Lisa is in an environment with low , it will allow her to strengthen further. Lisa will remain far at sea for now.

Explore further: Suomi NPP satellite spots birth of Tropical Cyclone Kate

add to favorites email to friend print save as pdf

Related Stories

Recommended for you

Suomi NPP satellite spots birth of Tropical Cyclone Kate

Dec 24, 2014

The tropical low pressure area previously known as System 95S organized and strengthened into Tropical Cyclone Kate on Dec. 24 and the Cocos Keeling Islands are expected to feel its effects on Dec. 25 and ...

NASA looks at some severe holiday weather from space

Dec 24, 2014

Severe weather in the form of tornadoes is not something people expect on Christmas week but a storm system on Dec. 23 brought tornadoes to Mississippi, Georgia and Louisiana. As the storm moved, NASA's RapidScat ...

NASA satellite spots Christmas

Dec 24, 2014

If you're looking for Christmas NASA's Aqua satellite spotted it in the Southern Indian Ocean. It's a coral atoll (a ring-shaped reef, island, or chain of islands made up of coral) in the northern Line Islands ...

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.