Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

NASA gets an eyeful from major Cyclone Narelle affecting Western Australia

14.01.2013
Tropical Cyclone Narelle "opened" its eye while moving along the coast of Western Australia and NASA's Terra satellite captured a clear image of the well-formed storm center. Narelle is now a major cyclone on the Saffir-Simpson Scale.

NASA's Terra Satellite Gets an Eyeful


NASA's Tropical Rainfall Measuring Mission (TRMM) satellite captured rainfall rates in Major Cyclone Narelle on Jan. 11 at 0654 UTC (1:54 a.m. EST). The heaviest rainfall was occurring at a rate of 2 inches (50 mm) per hour (in red) and stretched from north to west of the center of circulation.

Credit: NASA/SSAI Hal Pierce

When Terra passed over Narelle on Jan. 11 at 0245 UTC the Moderate Resolution Imaging Spectroradiometer (MODIS) instrument captured a visible image of the storm that clearly showed an eye had formed. Satellite imagery indicated that Narelle's eye was approximately 15 nautical miles (17.2 miles/27.8 km) wide. Satellite imagery also showed that Narelle had become more symmetrical and bands of thunderstorms had become more tightly wrapped into the center since Jan. 10.

Narelle Now a Major Cyclone

On Jan. 11 at 1500 UTC (10 a.m. EST), Tropical Cyclone Narelle's maximum sustained winds had increased to 115 knots (132.3 mph/213 kph), just as predicted by the Joint Typhoon Warning Center (JTWC). Narelle is now a major cyclone and a Category 4 hurricane on the Saffir-Simpson Scale. JTWC forecasters expect Narelle has now reached peak intensity and will begin to weaken hereafter as it moves parallel to the coast of Western Australia.

Narelle was located about 255 nautical miles (293.4 miles/472.3 km) north-northwest of Learmonth, Australia, near 18.3 south latitude and 112.6 east longitude. Narelle was moving to the southwest at 8 knots (9.2 mph/14.8 kph). Narelle is moving along the northwestern edge of a sub-tropical ridge (elongated area) of high pressure that is centered over Western Australia. The JTWC forecast noted that Narelle is expected to round the western edge of this ridge over the next three days before it recurves southeastward. By Jan. 14, the JTWC expects the system will become a cold core low pressure system as it moves over cooler waters and encounters increasing vertical wind shear.

NASA Satellite Sees Narelle's Heavy Rainfall

NASA's Tropical Rainfall Measuring Mission (TRMM) satellite captured rainfall rates in Major Cyclone Narelle on Jan. 11 at 0654 UTC (1:54 a.m. EST). The heaviest rainfall was occurring at a rate of 2 inches (50 mm) per hour and stretched from north to west of the center of circulation.

Warnings and Watches Posted

Until that time, however, warnings and watches are posted along the coastal areas of Western Australia. On Jan. 11, a Cyclone Warning was in effect for coastal areas from Mardie to Cape Cuvier. A Cyclone Watch is in effect for coastal areas from Cape Cuvier to Denham. A Blue Alert is effect for coastal and island communities from Mardie to Coral Bay including Onslow, Exmouth.

At 11 a.m. EST (1600 UTC) on Jan. 11, Onslow was reporting thunderstorms and sustained winds from the east-northeast. Onslow is a coastal town in the Pilbara region of Western Australia, located 1,386 kilometers (861 miles) north of Perth. Thunderstorms are expected to continue in the Pilbara region through Sunday, Jan. 13 as Narelle's center passes by while staying off shore. Onslow, Exmouth and other towns and cities in the Pilbara region are expected to clear by Monday, Jan. 14 as Narelle moves away.

For updates on warnings and watches, visit the Australian Bureau of Meteorology website: http://www.bom.gov.au/. The latest forecast from the JTWC (as of Jan. 11) keeps the center of Narelle over open water and never making landfall in any part of Western Australia. Narelle is expected to pass the southwestern tip of Australia sometime on Jan. 16 and move in a southeasterly direction over the Southern Indian Ocean where it will dissipate.

Rob Gutro | EurekAlert!
Further information:
http://www.nasa.gov
http://www.eurekalert.org/pub_releases/2013-01/nsfc-nga011113.php

More articles from Earth Sciences:

nachricht Ice cave in Transylvania yields window into region's past
28.04.2017 | National Science Foundation

nachricht Citizen science campaign to aid disaster response
28.04.2017 | International Institute for Applied Systems Analysis (IIASA)

All articles from Earth Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: Making lightweight construction suitable for series production

More and more automobile companies are focusing on body parts made of carbon fiber reinforced plastics (CFRP). However, manufacturing and repair costs must be further reduced in order to make CFRP more economical in use. Together with the Volkswagen AG and five other partners in the project HolQueSt 3D, the Laser Zentrum Hannover e.V. (LZH) has developed laser processes for the automatic trimming, drilling and repair of three-dimensional components.

Automated manufacturing processes are the basis for ultimately establishing the series production of CFRP components. In the project HolQueSt 3D, the LZH has...

Im Focus: Wonder material? Novel nanotube structure strengthens thin films for flexible electronics

Reflecting the structure of composites found in nature and the ancient world, researchers at the University of Illinois at Urbana-Champaign have synthesized thin carbon nanotube (CNT) textiles that exhibit both high electrical conductivity and a level of toughness that is about fifty times higher than copper films, currently used in electronics.

"The structural robustness of thin metal films has significant importance for the reliable operation of smart skin and flexible electronics including...

Im Focus: Deep inside Galaxy M87

The nearby, giant radio galaxy M87 hosts a supermassive black hole (BH) and is well-known for its bright jet dominating the spectrum over ten orders of magnitude in frequency. Due to its proximity, jet prominence, and the large black hole mass, M87 is the best laboratory for investigating the formation, acceleration, and collimation of relativistic jets. A research team led by Silke Britzen from the Max Planck Institute for Radio Astronomy in Bonn, Germany, has found strong indication for turbulent processes connecting the accretion disk and the jet of that galaxy providing insights into the longstanding problem of the origin of astrophysical jets.

Supermassive black holes form some of the most enigmatic phenomena in astrophysics. Their enormous energy output is supposed to be generated by the...

Im Focus: A Quantum Low Pass for Photons

Physicists in Garching observe novel quantum effect that limits the number of emitted photons.

The probability to find a certain number of photons inside a laser pulse usually corresponds to a classical distribution of independent events, the so-called...

Im Focus: Microprocessors based on a layer of just three atoms

Microprocessors based on atomically thin materials hold the promise of the evolution of traditional processors as well as new applications in the field of flexible electronics. Now, a TU Wien research team led by Thomas Müller has made a breakthrough in this field as part of an ongoing research project.

Two-dimensional materials, or 2D materials for short, are extremely versatile, although – or often more precisely because – they are made up of just one or a...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Fighting drug resistant tuberculosis – InfectoGnostics meets MYCO-NET² partners in Peru

28.04.2017 | Event News

Expert meeting “Health Business Connect” will connect international medical technology companies

20.04.2017 | Event News

Wenn der Computer das Gehirn austrickst

18.04.2017 | Event News

 
Latest News

Wireless power can drive tiny electronic devices in the GI tract

28.04.2017 | Medical Engineering

Ice cave in Transylvania yields window into region's past

28.04.2017 | Earth Sciences

Nose2Brain – Better Therapy for Multiple Sclerosis

28.04.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>