Winds blow off Omais' thunderstorm tops

March 26, 2010

Tropical Storm Omais is fading fast in the northwestern Pacific Ocean, and will dissipate over the weekend according to the Joint Typhoon Warning Center. When NASA's Aqua satellite flew over Omais late on March 25, it already showed signs of falling apart.

At 0900 UTC (5 a.m. EDT)on Friday, March 26, Tropical Storm Omais was barely hanging onto tropical storm strength with maximum sustained winds near 39 mph. It was located about 655 nautical miles southwest of the island of Iwo To (formerly Iwo Jima) near 18.3 North and 132.1 East. It was moving north-northeastward at 12 mph (11 knots) and quickly losing its tropical characteristics.

The infrared image from the Atmospheric Infrared Sounder (AIRS) instrument that flies on NASA's Aqua satellite captured an image of Omais on March 25 at 16:53 UTC (12:53 p.m. EDT) and revealed that its convection (rapidly rising air that creates the thunderstorms that power a tropical cyclone) was scattered and limited. It appears as if the convection center of circulation was blown apart - which is exactly what the wind shear had done to those high thunderstorm tops.

There is an upper level trough nearby and that has increased the vertical wind shear has elevated to near 46 mph (40 knots)! The system is expected to become fully extratropical on Saturday, March 27.
-end-


NASA/Goddard Space Flight Center

Related Wind Shear Articles from Brightsurf:

NASA imagery reveals Tropical Storm Gamma battered by wind shear
NASA's Terra satellite obtained visible imagery of Tropical Storm Gamma being battered by outside winds in the south central Gulf of Mexico.

NASA finds wind shear displacing Lowell's strongest storms
NASA's Aqua satellite provided an infrared view of Tropical Storm Lowell that revealed the effects of outside winds battering the storm.

NASA finds Dolphin swimming against wind shear
NASA's Terra satellite provided a visible image of a slightly elongated Tropical Storm Dolphin as it battled wind shear upon its approach to east central Japan.

NASA finds wind shear not letting up on Tropical Storm Vicky
NASA's Terra satellite obtained visible imagery of Tropical Storm Vicky as it continued moving through the eastern North Atlantic Ocean fighting strong wind shear.

NASA finds Tropical Storm Rene less affected by wind shear
NASA's Terra satellite obtained visible imagery of Tropical Storm Rene is it continued moving north though the central North Atlantic Ocean.

NASA's Aqua Satellite finds wind shear not letting up on Omar  
Tropical Depression Omar is one stubborn storm. Since it developed early in the week, it was being affected by wind shear.

NASA's Terra Satellite provides clear picture of wind shear battering Omar
NASA's Terra satellite provided a visible image that showed Tropical Storm Omar had weakened to a depression as it continued to be battered by strong upper level winds.

NASA sees wind shear still battering tropical storm Iselle
NASA infrared imagery shows wind shear continued to batter Tropical Storm Iselle in the Eastern Pacific Ocean for the second day.

NASA finds new Tropical Storm Iselle already battling wind shear
NASA infrared imagery shows that newly formed Tropical Storm Iselle is already battling for its life under wind shear.

NASA finds wind shear affecting Tropical Storm Josephine
NASA-NOAA's Suomi NPP satellite provided forecasters with a visible image of Tropical Storm Josephine east of the Lesser Antilles island chain.

Read More: Wind Shear News and Wind Shear Current Events
Brightsurf.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com.