Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

NASA Sees Hurricane Barbara Quickly Weaken to a Depression

31.05.2013
Tropical Storm Barbara strengthened into a hurricane just before it made landfall late on May 29, and after landfall it weakened into a tropical depression. NASA satellite imagery showed that cloud tops warmed and thunderstorms became more fragmented around the storm's center after Barbara made landfall.

Barbara is moving across the Isthmus of Tehuantepec today, May 30. Barbara could regenerate over the Bay of Campeche, on the Gulf of Mexico side of Mexico, and satellite imagery is watching Barbara closely. The Bay of Campeche is surrounded on three sides by the Mexican states of Campeche, Veracruz and Tabasco and is part of the Gulf of Mexico.


The MODIS instrument aboard NASA’s Aqua satellite captured this visible image of Hurricane Barbara as it was making landfall in southwestern Mexico. The image was taken at 19:30 UTC (3:30 p.m. EDT). Credit: NASA Goddard MODIS Rapid Response Team

At 2 p.m. EDT on May 29, Barbara became a hurricane with maximum sustained winds near 75 mph. Just three hours later Barbara was already moving over land. It brought heavy rainfall to eastern Oaxaca and Western Chiapas, Mexico.

The MODIS instrument aboard NASA’s Aqua satellite captured a visible image of Hurricane Barbara as it was making landfall in southwestern Mexico. The image was taken at 19:30 UTC (3:30 p.m. EDT). The image showed a large “tail” of thunderstorms that extended into the eastern Pacific Ocean.

By 8 p.m. EDT Barbara weakened back to tropical storm status as maximum sustained winds dropped to 60 mph. At 11 p.m. EDT, Barbara, still a tropical storm, although weaker was dropping a lot of rain. It was located near 17.1 north and 93.8 west, about 50 miles (85 km) west-northwest of Tuxtla Gutierrez, Mexico.

The Atmospheric Infrared Sounder (AIRS) instrument that flies aboard NASA’s Aqua satellite captured infrared images of Barbara’s cloud top temperatures on May 29 and May 30. The images showed that the interaction with landfall had a large toll on the organization and uplift of air within the storm. In an image from May 29 at 19:23 UTC (3:23 p.m. EDT) Barbara contained a large area of powerful thunderstorms, where cloud top temperatures were as cold as -63F (-52C). Those storms had the potential for heavy rainfall. After Barbara made landfall, AIRS captured another infrared image that showed how the friction of Barbara’s land interaction drastically reduced the uplift and thunderstorm development as cloud top temperatures warmed. The AIRS image, taken on May 30 at 07:35 UTC (3:35 a.m. EDT) showed fragmented strong thunderstorms around the center of circulation, with the largest area over the Gulf of Campeche.

By 5 a.m. EDT on May 30, Barbara weakened to a tropical depression with maximum sustained winds near 35 mph (55 kph). It was centered near 17.8 north and 93.9 west, about 40 miles (60 km) southeast of Coatzacoalcos, Mexico. Barbara is moving to the north at 8 mph (13 kph) and has a minimum central pressure of 1000 millibars. At that time, there were no warnings or watches in effect.

Barbara continues to be a big rainmaker over land. The National Hurricane Center (NHC) expects Barbara to produce total rain accumulations of 6 to 10 inches with isolated maximum amounts of 20 inches possible over portions of southeastern Mexico. The NHC reports that Arriaga, located in the State of Chiapas recorded a rainfall total of 16.02 inches (407 mm) in 18 hours from 11 a.m. EDT on May 29 to 5 a.m. EDT, May 30.

The Independent.ie reported that two people were killed as a result of the storm. A 26 year old Mexican resident was killed in an attempt to cross a rain swelled river and a 61-year-old U.S. man who was surfing at a Salina Cruz beach drowned during the storm.

The National Hurricane Center expects Barbara to keep dropping large amounts of rain over portions of southeastern Mexico today, May 30 as it heads for the Bay of Campeche. Barbara is expected to drop between 6 and 10 inches of rainfall with isolated maximum amounts up to 20 inches today, so inland flooding and mudslides are possible.

Text credit: Rob Gutro
NASA’s Goddard Space Flight Center

Rob Gutro | EurekAlert!
Further information:
http://www.nasa.gov
http://www.nasa.gov/mission_pages/hurricanes/archives/2013/h2013_Barbara.html

More articles from Earth Sciences:

nachricht NASA finds newly formed tropical storm lan over open waters
17.10.2017 | NASA/Goddard Space Flight Center

nachricht The melting ice makes the sea around Greenland less saline
16.10.2017 | Aarhus University

All articles from Earth Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Neutron star merger directly observed for the first time

University of Maryland researchers contribute to historic detection of gravitational waves and light created by event

On August 17, 2017, at 12:41:04 UTC, scientists made the first direct observation of a merger between two neutron stars--the dense, collapsed cores that remain...

Im Focus: Breaking: the first light from two neutron stars merging

Seven new papers describe the first-ever detection of light from a gravitational wave source. The event, caused by two neutron stars colliding and merging together, was dubbed GW170817 because it sent ripples through space-time that reached Earth on 2017 August 17. Around the world, hundreds of excited astronomers mobilized quickly and were able to observe the event using numerous telescopes, providing a wealth of new data.

Previous detections of gravitational waves have all involved the merger of two black holes, a feat that won the 2017 Nobel Prize in Physics earlier this month....

Im Focus: Smart sensors for efficient processes

Material defects in end products can quickly result in failures in many areas of industry, and have a massive impact on the safe use of their products. This is why, in the field of quality assurance, intelligent, nondestructive sensor systems play a key role. They allow testing components and parts in a rapid and cost-efficient manner without destroying the actual product or changing its surface. Experts from the Fraunhofer IZFP in Saarbrücken will be presenting two exhibits at the Blechexpo in Stuttgart from 7–10 November 2017 that allow fast, reliable, and automated characterization of materials and detection of defects (Hall 5, Booth 5306).

When quality testing uses time-consuming destructive test methods, it can result in enormous costs due to damaging or destroying the products. And given that...

Im Focus: Cold molecules on collision course

Using a new cooling technique MPQ scientists succeed at observing collisions in a dense beam of cold and slow dipolar molecules.

How do chemical reactions proceed at extremely low temperatures? The answer requires the investigation of molecular samples that are cold, dense, and slow at...

Im Focus: Shrinking the proton again!

Scientists from the Max Planck Institute of Quantum Optics, using high precision laser spectroscopy of atomic hydrogen, confirm the surprisingly small value of the proton radius determined from muonic hydrogen.

It was one of the breakthroughs of the year 2010: Laser spectroscopy of muonic hydrogen resulted in a value for the proton charge radius that was significantly...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

ASEAN Member States discuss the future role of renewable energy

17.10.2017 | Event News

World Health Summit 2017: International experts set the course for the future of Global Health

10.10.2017 | Event News

Climate Engineering Conference 2017 Opens in Berlin

10.10.2017 | Event News

 
Latest News

Researchers release the brakes on the immune system

18.10.2017 | Health and Medicine

Separating methane and CO2 will become more efficient

18.10.2017 | Life Sciences

Ocean atmosphere rife with microbes

17.10.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>