Nav: Home

NASA sees 18th Atlantic depression form

October 22, 2012

Tropical Depression 18 (TD18) formed over the southwestern Caribbean Sea at 11 a.m. EDT on Oct. 22, and NASA's TRMM satellite saw a "hot towering" thunderstorm near its center of circulation hinting that it could become a tropical storm soon. A tropical storm watch has been issued for Jamaica.

When NASA's Tropical Rainfall Measuring Mission (TRMM) satellite flew over the developing TD18 early on Oct. 22 at 0040 UTC (Oct. 21 at 8:40 p.m. EDT), the satellite measured rainfall rates within the low pressure area and measured cloud heights of the thunderstorms that make up the low.

TRMM noticed that the developing depression had a "hot towering" thunderstorm over 9.3 miles (15 kilometers) high. That same area also revealed heavy rainfall where rain was falling at 2 inches/50 mm per hour. Hot Towers are towering clouds that emit a tremendous amount of latent heat (that's why they're called "hot" towers). NASA research indicates that whenever a hot tower is spotted, a tropical cyclone will likely intensify within 6 or more hours, and the low pressure system intensified into a tropical depression.

Satellite data also showed that the depression also has a closed surface circulation and the banding of thunderstorms around the center has increased during the early morning hours on Oct. 22. These are all signs that the depression is getting more organized.

At 11 a.m. EDT, TD18 had maximum sustained winds near 30 mph (45 kph). It was located near 13.5 North latitude and 78.0 West longitude, about 320 miles (515 km) south-southwest of Kingston, Jamaica. TD18 was moving to the southwest at 5 mph 7 kph) and had a minimum central pressure of 1003 millibars.

The National Hurricane Center (NHC) noted that a tropical storm warning could be needed later in the day on Monday, Oct. 22 for Jamaica. Also, interests in eastern Cuba, Hispaniola, and the Bahamas should monitor the progress of this system. According to NHC, the depression is expected to drift westward and the turn to the north-northeast on Oct. 23 and 24. The forecast track takes TD18's center near Jamaica during the night-time hours on Oct. 23.

Tropical Depression 18 was born from the low pressure area formerly known as System 99L. The NHC expects TD18 to strengthen and become a tropical storm later on Oct. 22 or on Oct. 23. Once the depression becomes a tropical storm it would be renamed "Tropical Storm Sandy."

In addition to the new tropical depression, there's another area that forecasters are watching in the Atlantic. System 90L is producing showers and thunderstorms in the central Atlantic about 700 miles east-northeast of the Leeward Islands. During the morning hours of Oct. 22, the showers had become a little better organized, and the NHC gives the low a 50 percent chance of becoming the nineteenth tropical depression of the Atlantic hurricane season.
-end-


NASA/Goddard Space Flight Center

Related Depression Articles:

Which comes first: Smartphone dependency or depression?
New research suggests a person's reliance on his or her smartphone predicts greater loneliness and depressive symptoms, as opposed to the other way around.
Depression breakthrough
Major depressive disorder -- referred to colloquially as the 'black dog' -- has been identified as a genetic cause for 20 distinct diseases, providing vital information to help detect and manage high rates of physical illnesses in people diagnosed with depression.
CPAP provides relief from depression
Researchers have found that continuous positive airway pressure (CPAP) treatment of obstructive sleep apnea (OSA) can improve depression symptoms in patients suffering from cardiovascular diseases.
Post-natal depression in dads linked to depression in their teenage daughters
Fathers as well as mothers can experience post-natal depression -- and it is linked to emotional problems for their teenage daughters, new research has found.
Being overweight likely to cause depression, even without health complications
A largescale genomic analysis has found the strongest evidence yet that being overweight causes depression, even in the absence of other health problems.
Don't let depression keep you from exercising
Exercise may be just as crucial to a depression patient's good health as finding an effective antidepressant.
Having an abortion does not lead to depression
Having an abortion does not increase a woman's risk for depression, according to a new University of Maryland School of Public Health-led study of nearly 400,000 women.
Mother's depression might do the same to her child's IQ
Roughly one in 10 women in the United States will experience depression, according to the Centers for Disease Control and Prevention.
Teenage depression linked to father's depression
Adolescents whose fathers have depressive symptoms are more likely to experience symptoms of depression themselves, finds a new Lancet Psychiatry study led by UCL researchers.
Anxiety and depression linked to migraines
In a study of 588 patients who attended an outpatient headache clinic, more frequent migraines were experienced by participants with symptoms of anxiety and depression.
More Depression News and Depression Current Events

Best Science Podcasts 2019

We have hand picked the best science podcasts for 2019. Sit back and enjoy new science podcasts updated daily from your favorite science news services and scientists.
Now Playing: TED Radio Hour

Rethinking Anger
Anger is universal and complex: it can be quiet, festering, justified, vengeful, and destructive. This hour, TED speakers explore the many sides of anger, why we need it, and who's allowed to feel it. Guests include psychologists Ryan Martin and Russell Kolts, writer Soraya Chemaly, former talk radio host Lisa Fritsch, and business professor Dan Moshavi.
Now Playing: Science for the People

#538 Nobels and Astrophysics
This week we start with this year's physics Nobel Prize awarded to Jim Peebles, Michel Mayor, and Didier Queloz and finish with a discussion of the Nobel Prizes as a way to award and highlight important science. Are they still relevant? When science breakthroughs are built on the backs of hundreds -- and sometimes thousands -- of people's hard work, how do you pick just three to highlight? Join host Rachelle Saunders and astrophysicist, author, and science communicator Ethan Siegel for their chat about astrophysics and Nobel Prizes.