Tropical Storm Robyn nested away from land

Apr 05, 2010
NASA's Aqua satellite flew over Tropical Storm Robyn on April 2, 1929 UTC and the Atmospheric Infrared Sounder instrument captured an infrared image of the storm's cloud temperatures. The images showed high, cold, thunderstorm cloud tops (purple) as cold as -63 F. Credit: NASA JPL, Ed Olsen

Tropical Storm "Robyn" didn't have to fly south for the northern hemisphere winter, like the birds (Robins), it formed in the southern hemisphere this past weekend in the Southern Indian Ocean. Infrared satellite imagery from NASA's Aqua satellite revealed that the storm's strong thunderstorms and heavy rainfall are safely "nested" over open waters.

Formerly 23S, Robyn strengthened into a tropical storm this weekend. As of Monday, April 5, Robyn had near 60 knots (69 mph) gusting to 75 knots (86 mph). It was located about 370 nautical miles southwest of Cocos Islands, Australia, near 16.1 South and 92.0 East. Robyn was moving south-southeast at 7 mph (6 knots) and as it moves it is kicking up waves up to 18 feet high.

The Cocos Islands and Keeling Islands, also called the Territory of Cocos (Keeling) Islands, is an Australian territory. There are twenty-seven coral islands and two atolls in the group of islands.

NASA's Aqua satellite has been flying over Tropical Storm Robyn since it developed on Friday, April 2. The Atmospheric Infrared Sounder (AIRS) instrument captured of the storm that showed high, cold, tops as cold as -63 Fahrenheit (-52 Celsius). That data helped forecasters see that Robyn had powerful rain-making thunderstorms. AIRS provided valuable infrared data on Robyn's cloud top temperatures, which are important because they tell forecasters how high thunderstorms are and the rule is: the higher the thunderstorm, the more powerful the tropical cyclone. AIRS imagery revealed this morning that deep convection (rapidly rising air that condenses and forms thunderstorms that power a tropical cyclone) has decreased. Meanwhile, the low-level center of circulation continues to remain well-organized and the strongest winds are in the southwestern quadrant of the storm.

The Atmospheric Infrared Sounder instrument on NASA's Aqua satellite captured a visible image of Tropical Storm Robyn on Monday, April 5, at 0729 UTC (3:29 a.m. EDT). The white areas on the sides of the image are outside of the "vision" of the AIRS instrument as the satellite passed over the storm from space. Credit: NASA JPL, Ed Olsen

The Joint Typhoon Warning Center noted that Robyn's movement southeastward is taking the tropical storm further into an area of higher vertical wind shear (which can weaken and tear the storm apart). As a result, Robyn is expected to weaken over the next three days while remaining at sea.

Explore further: TRMM Satellite calculates Hurricanes Fay and Gonzalo rainfall

add to favorites email to friend print save as pdf

Related Stories

Tropical Storm Oli kicking up waves in south Pacific

Feb 02, 2010

Tropical Storm Oli is headed between the islands of Bora Bora and Raratonga in the South Pacific, while maintaining its intensity as a tropical storm. Infrared satellite data from NASA's Aqua satellite reveals ...

Tropical Storm 23S born in Southern Indian Ocean

Apr 02, 2010

According to data from the Tropical Rainfall Measuring Mission, or TRMM satellite mostly light to moderate rain is falling in the latest tropical cyclone born in the waters of the Southern Indian Ocean. TRMM ...

Imani on the weakening on weekend

Mar 26, 2010

This isn't a good weekend for keeping tropical cyclones alive, as Tropical Storm Omais is becoming extra-tropical in the northwestern Pacific Ocean and Tropical Storm Imani appears doomed over the weekend in the Southern ...

Powerful Cyclone Tomas battering Northern Fiji islands

Mar 15, 2010

Tomas grew into a monster Category 4 cyclone and thrashed the northern Fiji Islands with heavy rains and maximum sustained winds of up to 170 mph (275 km). The Moderate Resolution Imaging Spectroradiometer ...

Recommended for you

Tropical Depression 9 forms in Gulf of Mexico

6 hours ago

Tropical Depression Nine formed over the western Bay of Campeche, Gulf of Mexico and is forecast to make a quick landfall on Mexico's Yucatan Peninsula. NOAA's GOES-East Satellite captured the birth of the ...

$58 million effort to study potential new energy source

11 hours ago

A research team led by The University of Texas at Austin has been awarded approximately $58 million to analyze deposits of frozen methane under the Gulf of Mexico that hold enormous potential to increase ...

And now, the volcano forecast

12 hours ago

Scientists are using volcanic gases to understand how volcanoes work, and as the basis of a hazard-warning forecast system.

User comments : 0