Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

NASA Spots Active Southern Indian Ocean's Tropical Storm 18S

26.02.2013
The eighteenth tropical cyclone of the Southern Indian Ocean season formed over the weekend of Feb. 23-24 along with Cyclone Rusty as Cyclone Haruna crossed southern Madagascar. NASA's Aqua satellite measured Tropical Storm 18S' cloud top temperatures and saw powerful thunderstorms around the storm's core.

Cyclone Rusty is nearing a landfall in northwestern West Australia, while Tropical Storm 18S is headed in a similar direction.


On Feb. 24 at 2:29 a.m. EST the AIRS instrument aboard NASA's Aqua satellite captured infrared data on TS18S. The coldest temperatures (purple) and highest cloud tops (and strongest thunderstorms) appeared in a large area around TD18S's center. Credit: NASA/JPL, Ed Olsen

Tropical Storm 18S (TS18S) was born on Feb. 24 and achieved tropical storm strengthe with maximum sustained winds near 35 knots (40 mph). It formed about 45 nautical miles southeast of the Cocos Islands, Australia near 12.7 south latitude and 97.3 east longitude.

Wind shear on Feb. 24 was affecting the storm, and pushing the strongest thunderstorms west of the center. NASA's TRMM satellite captured data on rainfall and noted the strongest rainfall was occurring west of the center at a rate of more than 1.4 inches per hour.

On Feb. 24 at 0729 UTC (2:29 a.m. EST), the Atmospheric Infrared Sounder (AIRS) instrument aboard NASA's Aqua satellite captured infrared data on TS18S. The data was created into a false-colored image at NASA's Jet Propulsion Laboratory in Pasadena, Calif. False coloration enables meteorologists to see distinction in temperatures, and the coldest temperatures and highest cloud tops (and strongest thunderstorms) appeared in a large area around TD18S's center. Cloud top temperatures around the center exceeded the -63 Fahrenheit (-52 Celsius) threshold, indicating that those areas were likely dropping heavy rainfall.

Satellite data has shown that wind shear is still affecting the tropical storm, and pushing the main convection to the west. That wind shear is expected to persist over the next couple of days before easing up.

On Feb. 25 at 1500 UTC (10 a.m. EST) Tropical Storm 18S was located about 980 nautical miles (1,128 miles/1,815 km) west-northwest of Learmonth, Australia, near 14.7 south and 99.0 east. TS18S had maximum sustained winds near 35 knots (40.2 mph/64.8 kph) and was moving to the southeast near 6 knots (6.9 mph/11.1 kph).

Forecasters at the Joint Typhoon Warning Center expect TS18S to take an easterly track, toward Port Hedland and Learmonth, Western Australia after the second of March. If that occurs, the residents of northwestern Australia will be recovering from Cyclone Rusty when Tropical Storm 18S approaches.

Text Credit: Rob Gutro
NASA's Goddard Space Flight Center, Greenbelt, Md.

Rob Gutro | EurekAlert!
Further information:
http://www.nasa.gov
http://www.nasa.gov/mission_pages/hurricanes/archives/2013/h2013_18S.html

More articles from Earth Sciences:

nachricht Volcanic eruption masked acceleration in sea level rise
26.08.2016 | National Science Foundation

nachricht Biomass turnover time in ecosystems is halved by land use
23.08.2016 | Alpen-Adria-Universität Klagenfurt

All articles from Earth Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: Streamlining accelerated computing for industry

PyFR code combines high accuracy with flexibility to resolve unsteady turbulence problems

Scientists and engineers striving to create the next machine-age marvel--whether it be a more aerodynamic rocket, a faster race car, or a higher-efficiency jet...

Im Focus: X-ray optics on a chip

Waveguides are widely used for filtering, confining, guiding, coupling or splitting beams of visible light. However, creating waveguides that could do the same for X-rays has posed tremendous challenges in fabrication, so they are still only in an early stage of development.

In the latest issue of Acta Crystallographica Section A: Foundations and Advances , Sarah Hoffmann-Urlaub and Tim Salditt report the fabrication and testing of...

Im Focus: Piggyback battery for microchips: TU Graz researchers develop new battery concept

Electrochemists at TU Graz have managed to use monocrystalline semiconductor silicon as an active storage electrode in lithium batteries. This enables an integrated power supply to be made for microchips with a rechargeable battery.

Small electrical gadgets, such as mobile phones, tablets or notebooks, are indispensable accompaniments of everyday life. Integrated circuits in the interiors...

Im Focus: UCI physicists confirm possible discovery of fifth force of nature

Light particle could be key to understanding dark matter in universe

Recent findings indicating the possible discovery of a previously unknown subatomic particle may be evidence of a fifth fundamental force of nature, according...

Im Focus: Wi-fi from lasers

White light from lasers demonstrates data speeds of up to 2 GB/s

A nanocrystalline material that rapidly makes white light out of blue light has been developed by KAUST researchers.

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

The energy transition is not possible without Geotechnics

25.08.2016 | Event News

New Ideas for the Shipping Industry

24.08.2016 | Event News

A week of excellence: 22 of the world’s best computer scientists and mathematicians in Heidelberg

12.08.2016 | Event News

 
Latest News

Symmetry crucial for building key biomaterial collagen in the lab

26.08.2016 | Health and Medicine

Volcanic eruption masked acceleration in sea level rise

26.08.2016 | Earth Sciences

Moth takes advantage of defensive compounds in Physalis fruits

26.08.2016 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>