Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

NASA Sees Typhoon Halong's Eye Wink

05.08.2014

As Super Typhoon Halong tracks north through the Northwestern Pacific Ocean, NASA's Aqua and Terra satellites have seen the powerful storm appear to wink at space as it developed and "opened" an eye and then close its eye as clouds moved over it. That wink appears to be a sign of eyewall replacement in the powerful storm.

On August 2 at 01:45 UTC (August 1 at 9:45 p.m. EDT) NASA's Terra satellite captured a visible image of a wide-eyed Super Typhoon Halong moving through the Northwestern Pacific Ocean. At the time of the image, Halong was a powerful Category 5 Super Typhoon on the Saffir-Simpson Scale. Satellite data showed that Halong had a 10-nautical mile (11.5 mile/18.5 km) wide eye.


On August 4 at 12:40 a.m. EDT NASA's Aqua satellite captured this visible image of Typhoon Halong and its cloud-filled eye as it continued tracking north toward Japan.

Image Credit: NASA Goddard MODIS Rapid Response Team


On August 2 at 01:45 UTC NASA's Terra satellite captured this visible image of a wide-eyed Typhoon Halong moving through the Northwestern Pacific Ocean.

Image Credit: NASA Goddard MODIS Rapid Response Team

On August 4 at 04:40 UTC (12:40 a.m. EDT), NASA's Aqua satellite captured a visible image of Super Typhoon Halong that showed its eye had become cloud filled. The image also showed that the bulk of strongest bands of thunderstorms were over the southern quadrant of the storm.

Forecasters at the Joint Typhoon Warning Center or JTWC noted that microwave satellite imagery suggests an on-going eyewall replacement. That's when the thunderstorms that circle the eye of a powerful hurricane are replaced by other thunderstorms. Basically, a new eye begins to develop around the old eye.

Many intense hurricanes undergo at least one of these eyewall replacements during their existence. JTWC noted that the eyewall replacement correlates to the recent weakening trend.

On Monday, August 4, Super Typhoon Halong's maximum sustained winds had dropped to near 105 knots (120.8 mph/190.4 kph), making it a Category Two hurricane on the Saffir-Simpson Scale. On August 3, Halong was a Super Typhoon with maximum sustained winds near 130 knots (149.6 mph/240.8 kph) on August 3, which made it a Category Four storm.

On August 4, Halong was centered near 17.3 north and 130.3 east, about 588 nautical miles (676.7 miles/1,089 km) south-southeast of Kadena Air Base, Okinawa, Japan. Halong was moving northwest at 4 knots (4.6 mph/7.4 kph). Because Halong is such a powerful storm, it is generating extremely rough seas. The Joint Typhoon Warning Center noted that wave heights were near 42 feet (12.8 meters).

The JTWC expects Halong to continue moving in a northerly direction for the next couple of days.

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

Rob Gutro | Eurek Alert!
Further information:
http://www.nasa.gov/content/goddard/11w-northwestern-pacific-ocean/

Further reports about: Category Eye JTWC NASA Super Typhoon UTC Warning hurricane knots satellite thunderstorms winds

More articles from Earth Sciences:

nachricht Earth Day: Disease spread among species is predictable
24.04.2015 | National Science Foundation

nachricht Warming climate may release vast amounts of carbon from long-frozen Arctic soils
24.04.2015 | University of Georgia

All articles from Earth Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: Fast and Accurate 3-D Imaging Technique to Track Optically-Trapped Particles

KAIST researchers published an article on the development of a novel technique to precisely track the 3-D positions of optically-trapped particles having complicated geometry in high speed in the April 2015 issue of Optica.

Daejeon, Republic of Korea, April 23, 2015--Optical tweezers have been used as an invaluable tool for exerting micro-scale force on microscopic particles and...

Im Focus: NOAA, Tulane identify second possible specimen of 'pocket shark' ever found

Pocket sharks are among the world's rarest finds

A very small and rare species of shark is swimming its way through scientific literature. But don't worry, the chances of this inches-long vertebrate biting...

Im Focus: Drexel materials scientists putting a new spin on computing memory

Ever since computers have been small enough to be fixtures on desks and laps, their central processing has functioned something like an atomic Etch A Sketch, with electromagnetic fields pushing data bits into place to encode data.

Unfortunately, the same drawbacks and perils of the mechanical sketch board have been just as pervasive in computing: making a change often requires starting...

Im Focus: Exploding stars help to understand thunderclouds on Earth

How is lightning initiated in thunderclouds? This is difficult to answer - how do you measure electric fields inside large, dangerously charged clouds? It was discovered, more or less by coincidence, that cosmic rays provide suitable probes to measure electric fields within thunderclouds. This surprising finding is published in Physical Review Letters on April 24th. The measurements were performed with the LOFAR radio telescope located in the Netherlands.

How is lightning initiated in thunderclouds? This is difficult to answer - how do you measure electric fields inside large, dangerously charged clouds? It was...

Im Focus: On the trail of a trace gas

Max Planck researcher Buhalqem Mamtimin determines how much nitrogen oxide is released into the atmosphere from agriculturally used oases.

In order to make statements about current and future air pollution, scientists use models which simulate the Earth’s atmosphere. A lot of information such as...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

HHL Energy Conference on May 11/12, 2015: Students Discuss about Decentralized Energy

23.04.2015 | Event News

“Developing our cities, preserving our planet”: Nobel Laureates gather for the first time in Asia

23.04.2015 | Event News

HHL's Entrepreneurship Conference on FinTech

13.04.2015 | Event News

 
Latest News

Electrons Move Like Light in Three-Dimensional Solid

24.04.2015 | Materials Sciences

Connecting Three Atomic Layers Puts Semiconducting Science on Its Edge

24.04.2015 | Materials Sciences

Understanding the Body’s Response to Worms and Allergies

24.04.2015 | Health and Medicine

VideoLinks
B2B-VideoLinks
More VideoLinks >>>