NASA sees Nadine weaken to a tropical storm again

Oct 01, 2012
TRMM satellite data from Sept. 30 were used to make this 3-D view of Nadine from the northeast. Convective thunderstorms appear in the northwestern part of the hurricane were reaching to heights of about 12km (~7.5 miles). Credit: SSAI/Hal Pierce

NASA satellites continue to watch the long-lived Nadine in the eastern Atlantic. Today, Oct. 1, NASA satellite data revealed that Nadine has weakened from a hurricane and is now a tropical storm.

Over the weekend of Sept. 29 and 30, Hurricane Nadine dramatically rebounded. On September 19, 2012 Nadine appeared to be dissipating quickly and was expected to become post-tropical but after over a week of meandering near the Azores, Nadine sprang to life again as a hurricane on Friday September 28, 2012.

NASA's Tropical Rainfall Measuring Mission (TRMM) satellite's path took it almost directly above hurricane Nadine on Sept. 30 at 0452 UTC (12:52 a.m. EDT) when it was still a hurricane.

At NASA's Goddard Space Flight Center in Greenbelt, Md. an enhanced infrared image from TRMM's Visible and (VIRS) was overlaid with a derived from TRMM's (TMI) and (PR). The final image revealed that Nadine had a well-defined but ragged eye with the heaviest rainfall of about 50mm/hour (~2 inches) located on the western side of the hurricane.

TRMM PR data were used to also create a 3-D view from the northeast that showed convective thunderstorms in the northwestern part of the hurricane were reaching to heights of about 12km (~7.5 miles).

On Oct. 1 at 11 a.m. EDT, the center of was 690 miles (1,110 km) west of the Azores near latitude 35.8 north and longitude 39.2 west. have decreased to near 70 mph (110 kph). Nadine is moving toward the south-southeast near 5 mph (7 kph) and expected to do a counter-clockwise loop over the next day, turning southeast and east.

A Tropical Storm Watch is again in effect for the Azores.

Satellite data reveals that the strongest thunderstorms within Nadine are in the northern and eastern quadrants. Wind shear is increasing and are below the 80 degree Fahrenheit (26.6 Celsius) threshold needed to keep a tropical storm going, so weakening is expected.

Infrared imagery from NASA's Atmospheric Infrared Sounder (AIRS) instrument aboard the Aqua satellite show that sea surface temperatures near Nadine are around 23 Celsius (73.4 Fahrenheit), too cold to maintain a tropical storm.

According to the National Hurricane Center, tropical storm conditions are possible in the Azores by late Wednesday, Oct. 3.

Explore further: Tropical depression 21W forms, Philippines under warnings

add to favorites email to friend print save as pdf

Related Stories

NASA sees wind shear battering Tropical Storm Nadine

Sep 13, 2012

Tropical Storm Nadine is struggling against wind shear and some dry air. Infrared satellite imagery from NASA showed that Nadine's most powerful thunderstorms were being pushed east of the center.

Satellites see Tropical Storm Nadine 'refuse to go away'

Sep 25, 2012

Nearly two weeks after becoming a tropical storm in the central Atlantic back on September 11th, NASA satellites confirm that Nadine is still spinning away south of the Azores as a minimal tropical storm. ...

Recommended for you

Questions of continental crust

17 hours ago

Geological processes shape the planet Earth and are in many ways essential to our planet's habitability for life. One important geological process is plate tectonics – the drifting, colliding and general ...

Better forecasts for sea ice under climate change

Nov 25, 2014

University of Adelaide-led research will help pinpoint the impact of waves on sea ice, which is vulnerable to climate change, particularly in the Arctic where it is rapidly retreating.

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.