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.

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

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

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 NASA sees Gonzalo affect Bermuda's ocean sediment: Stirred, not shaken
22.10.2014 | NASA/Goddard Space Flight Center

nachricht NASA's Aqua satellite sees Tropical Storm Ana still affecting Hawaii
22.10.2014 | NASA/Goddard Space Flight Center

All articles from Earth Sciences >>>

The most recent press releases about innovation >>>

Anzeige

Anzeige

Event News

Comparing Apples and Oranges? A Colloquium on International Comparative Urban Research

22.10.2014 | Event News

Battery Conference April 2015 in Aachen

16.10.2014 | Event News

Experts discuss new developments in the field of stem cell research and cell therapy

10.10.2014 | Event News

 
Latest News

Earliest modern human sequenced

22.10.2014 | Life Sciences

Continuous slab caster from Siemens receives FAC from Maanshan

22.10.2014 | Press release

'Shrinking goats' another indicator that climate change affects animal size

22.10.2014 | Ecology, The Environment and Conservation

VideoLinks
B2B-VideoLinks
More VideoLinks >>>