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 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 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 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 Miranda: An Icy Moon Deformed by Tidal Heating
19.09.2014 | Geological Society of America

nachricht NASA Sees Odile Soaking Mexico and Southwestern U.S.
18.09.2014 | NASA/Goddard Space Flight Center

All articles from Earth Sciences >>>

The most recent press releases about innovation >>>

Anzeige

Anzeige

Event News

"Start-ups and spin-offs funding – Public and private policies", 14th October 2014

12.09.2014 | Event News

BALTIC 2014: Baltic Sea Geologists meet in Warnemünde

03.09.2014 | Event News

IT security in the digital society

27.08.2014 | Event News

 
Latest News

No sedative necessary: Scientists discover new “sleep node” in the brain

19.09.2014 | Life Sciences

Sensing Neuronal Activity With Light

19.09.2014 | Life Sciences

Miranda: An Icy Moon Deformed by Tidal Heating

19.09.2014 | Earth Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>