Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

NASA sees Tropical Cyclone Ita over the Coral Sea

15.04.2014

Tropical Cyclone Ita made landfall in northeastern Queensland, Australia on April 11 as a powerful Category 4 hurricane on the Saffir-Simpson scale, moved south and re-emerged in the Coral Sea on April 14 where NASA's TRMM and NASA-NOAA's Suomi NPP Satellites captured imagery of the weakened storm.

The VIIRS instrument aboard NASA-NOAA's Suomi NPP satellite captured a visible look at Ita's elongating structure on April 14 at 4:12 UTC/12:12. The Visible Infrared Imaging Radiometer Suite (VIIRS) instrument collects visible and infrared imagery and global observations of land, atmosphere, cryosphere and oceans. Strong northwesterly vertical wind shear was evident because the bulk of the storm's clouds were pushed southeast of the center. The VIIRS image also revealed that Ita no longer maintained a rounded shape.


NASA's TRMM satellite rainfall data was combined with infrared data from Japan's MTSAT-2 to create this image of Tropical Cyclone Ita over the Coral Sea on April 14 at 1050 UTC. Heavy rainfall appears in red at 1.4 inches per hour.

Credit: NRL/NASA/JAXA

NASA and the Japan Aerospace Exploration Agency's Tropical Rainfall Measuring Mission (TRMM) satellite's Precipitation Radar instrument gathered rainfall data from Ita when it flew overhead on April 14. That rainfall data was combined with infrared data of Ita's clouds from Japan's MTSAT-2 satellite.

The image taken on April 14 at 1050 UTC/6:50 a.m. EDT showed rain fall rates of up to 1.4 inches/35.5 mm per hour falling southeast of Ita's elongated center.

After Tropical cyclone Ita made landfall on April 11, it continued tracking over land on the eastern Cape York Peninsula of Queensland, Australia where it weakened to a tropical storm. The Moderate Resolution Imaging Spectroradiometer (MODIS) instrument aboard NASA's Terra satellite captured an infrared image of Ita on April 12 at 1225 UTC/8:25 a.m. EDT. The MODIS image showed very high, powerful thunderstorms with very cold cloud top temperatures were south of the center of circulation. The thick band of thunderstorms had cloud top temperatures that were as cold as -80F/-62.2C. Those thunderstorms had the potential for heavy rainfall.

According to the Brisbane Times, Ita did not cause any loss of life, but did damage agriculture. Ita reportedly destroyed banana crops and flattened cane fields. Flooding from heavy rainfall also cut off the Bruce Highway, Queensland's main highway.

On April 12 at 1200 UTC (8 a.m. EDT U.S. and April 13 at 2:00 a.m. local time) the Australian Bureau of Meteorology (ABM) noted that a Cyclone Warning remained in effect for coastal areas from Cape Tribulation to St. Lawrence. A Cyclone Watch remained in effect for coastal areas from St. Lawrence to Yeppoon. Heavy rainfall, flash flooding, gale-force winds and rough surf can be expected in the warning area. ABM warned that abnormally high tides were expected between Innisfail and Townsville.

On April 12, the Joint Typhoon Warning Center (JTWC) reported animated multispectral satellite imagery revealed that Ita's structure remained well-defined, even over land. Radar imagery from Cairns showed strong bands of thunderstorms along the eastern quadrant of the storm.

On April 12 at 0900 UTC/5 a.m. EDT, Tropical Storm Ita had maximum sustained winds near 50 knots/57.5 mph/92.6 kph. It was centered near 17.0 south latitude and 145.5 east longitude, about 31 nautical miles/35.7 miles/57.4 km west-northwest of Cairns, Queensland. Tropical cyclone Ita has tracked south-southeastward at 6 knots/6.9 miles/11.1 kph.

By April 13 at 12:06 UTC/7 a.m. local time Monday/8 p.m. EDT/U.S., Ita's maximum sustained winds dropped to 45 knots/51.7 mph/83.3 kph. Tropical Cyclone Ita was located off the central Queensland coast near latitude 22.0 south longitude 152.2 east, which is about 121.2 miles/195 km northeast of Yeppoon and 142.9 miles/230 km north northeast of Gladstone.

Satellite imagery showed that the bulk of the convection and thunderstorms associated with Ita were being blown to the south of the center because of strong northwesterly wind shear.

The JTWC's final warning on Ita was issued on April 14 at 0900 UTC/5 a.m. EDT when Ita was back over the Coral Sea. At that time, Ita's maximum sustained winds were down to 40 knots/46.0 mph/74.0 kph. It was centered near 23.7 north latitude and 155.1 east longitude, about 299.2 miles/481.5 km north-northeast of Brisbane, Queensland, Australia. Tropical Storm Ita was moving to the east-southeast at 23 knots/26.4 mph/42.6 kph. All warnings in Queensland were canceled.

JTWC forecasters using animated multispectral satellite imagery noted that Ita was quickly becoming extra-tropical. Ita was embedded in the mid-latitude westerly winds and as a result of that its circulation was starting to stretch out. Strong vertical wind shear was also pushing the strongest thunderstorms to the southeast of the center, and Ita had began taking on frontal characteristics.

JTWC forecasters expect that the vertical wind shear from the westerly winds will speed up the transition into an extra-tropical storm, and by April 15, Ita is expected to be fully extra-tropical.

Rob Gutro | Eurek Alert!
Further information:
http://www.nasa.gov

Further reports about: EDT NASA Radar atmosphere circulation clouds observations satellite

More articles from Earth Sciences:

nachricht Evidence points to widespread loss of ocean oxygen by 2030s
02.05.2016 | National Science Foundation

nachricht Forming fogbows: Study finds limit on evaporation to ice sheets, but that may change
02.05.2016 | Oregon State 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: 2+1 is Not Always 3 - In the microworld unity is not always strength

If a person pushes a broken-down car alone, there is a certain effect. If another person helps, the result is the sum of their efforts. If two micro-particles are pushing another microparticle, however, the resulting effect may not necessarily be the sum their efforts. A recent study published in Nature Communications, measured this odd effect that scientists call “many body.”

In the microscopic world, where the modern miniaturized machines at the new frontiers of technology operate, as long as we are in the presence of two...

Im Focus: Tiny microbots that can clean up water

Researchers from the Max Planck Institute Stuttgart have developed self-propelled tiny ‘microbots’ that can remove lead or organic pollution from contaminated water.

Working with colleagues in Barcelona and Singapore, Samuel Sánchez’s group used graphene oxide to make their microscale motors, which are able to adsorb lead...

Im Focus: ORNL researchers discover new state of water molecule

Neutron scattering and computational modeling have revealed unique and unexpected behavior of water molecules under extreme confinement that is unmatched by any known gas, liquid or solid states.

In a paper published in Physical Review Letters, researchers at the Department of Energy's Oak Ridge National Laboratory describe a new tunneling state of...

Im Focus: Bionic Lightweight Design researchers of the Alfred Wegener Institute at Hannover Messe 2016

Honeycomb structures as the basic building block for industrial applications presented using holo pyramid

Researchers of the Alfred Wegener Institute (AWI) will introduce their latest developments in the field of bionic lightweight design at Hannover Messe from 25...

Im Focus: New world record for fullerene-free polymer solar cells

Polymer solar cells can be even cheaper and more reliable thanks to a breakthrough by scientists at Linköping University and the Chinese Academy of Sciences (CAS). This work is about avoiding costly and unstable fullerenes.

Polymer solar cells can be even cheaper and more reliable thanks to a breakthrough by scientists at Linköping University and the Chinese Academy of Sciences...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

The “AC21 International Forum 2016” is About to Begin

27.04.2016 | Event News

Soft switching combines efficiency and improved electro-magnetic compatibility

15.04.2016 | Event News

Grid-Supportive Buildings Give Boost to Renewable Energy Integration

12.04.2016 | Event News

 
Latest News

Identifying drug targets for leukaemia

02.05.2016 | Life Sciences

Clay nanotube-biopolymer composite scaffolds for tissue engineering

02.05.2016 | Materials Sciences

NASA's Fermi Telescope helps link cosmic neutrino to blazar blast

02.05.2016 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>