Nadine initially formed into a tropical depression from an African easterly wave that had propagated westward out into the central Atlantic from the coast of Africa. Nadine initially moved northwestward then northward before getting caught up in the westerlies over the north-central Atlantic on Sept. 15. It was there that Nadine became a minimal hurricane as it moved due east.
This TRMM image taken on Sept. 24 at 08:49 UTC provided a look into the structure of Nadine and showed some towering thunderstorms reaching heights of almost 9.3 miles (15km). Credit: NASA/SSAI, Hal Pierce
After two days, Nadine turned to the northeast in the direction of the Azores and weakened back to a tropical storm. Nadine slowed down as it approached the Azores and became almost stationary on Sept. 20 about 150 miles (~240 km) southwest of the islands. Nadine than began moving just south of due east again then finally southward away from the islands.
At this point, Nadine lost some of its tropical characteristics as convection died out around the center, and it was declared post-tropical by the National Hurricane Center. A day and a half later on Sept. 23, Nadine regained some of its thunderstorm activity and was declared a tropical storm again. By now, Nadine was well south of the Azores and beginning to move westward again.
The Tropical Rainfall Measuring Mission (TRMM) satellite has been keeping tabs on Nadine in the central Atlantic. TRMM captured an image of Nadine on the morning of the September 24 after Nadine had again become a tropical storm. The image taken at 08:49 UTC (4:49 pm EDT) September 24, provided a look into the structure of Nadine by way of the storm's rain pattern.
The TRMM imagery is created at NASA's Goddard Space Flight Center in Greenbelt, Md. To make the images of rainfall, rain rates in the center of the image are created from the TRMM Precipitation Radar (PR), while those in the outer swath are from the TRMM Microwave Imager (TMI). The rain rates are then overlaid on infrared (IR) data from the TRMM Visible Infrared Scanner (VIRS).
The TRMM imagery showed that Nadine's cyclonic circulation is clearly evident in the swirling cloud elements (visible in white) as they spiral in towards the center in a counter clockwise direction. In terms of rainfall, Nadine is very asymmetric with nearly all of the rain contained in a rainband north of the center (shown in green, indicating moderate rain).Right near the center, there were some smaller areas of rain present (shown in blue, indicating light rain), but nothing significant that would indicate Nadine is preparing to intensify.
In fact, Nadine had been and continues to experience some southwesterly wind shear and dry air. Combined with marginal sea surface temperatures, it is not an environment conducive for development. However, conditions are forecast to become more favorable in a couple of days and Nadine could become a little stronger.
On Sept. 25, at 5 a.m. EDT (0900 UTC0, Nadine's maximum sustained winds were near 45 mph (75 kmh) with higher gusts. The National Hurricane Center expects some slow strengthening over the next two days. The center of Tropical Storm Nadine was located near latitude 32.1 north and longitude 29.6 west. Nadine is moving toward the west near 6 mph (9kmh) and a turn toward the southwest with a reduction in forward speed is expected later today, followed by a turn to the south on Wednesday, Sept. 26. Nadine's estimated minimum central pressure is 996 millibars.
Despite its relatively long life, Nadine has a ways to go before capturing the record. Hurricane Ginger was around for 27 days back in 1971, and the 1899 Puerto Rico Hurricane lasted 28 days as a tropical cyclone.
TRMM is a joint mission between NASA and the Japanese space agency JAXA.Text credit: Steve Lang
Steve Lang | EurekAlert!
Hidden river once flowed beneath Antarctic ice
22.08.2017 | Rice University
Greenland ice flow likely to speed up: New data assert glaciers move over sediment, which gets more slippery as it gets wetter
17.08.2017 | Swansea University
Whether you call it effervescent, fizzy, or sparkling, carbonated water is making a comeback as a beverage. Aside from quenching thirst, researchers at the University of Illinois at Urbana-Champaign have discovered a new use for these "bubbly" concoctions that will have major impact on the manufacturer of the world's thinnest, flattest, and one most useful materials -- graphene.
As graphene's popularity grows as an advanced "wonder" material, the speed and quality at which it can be manufactured will be paramount. With that in mind,...
Physicists at the University of Bonn have managed to create optical hollows and more complex patterns into which the light of a Bose-Einstein condensate flows. The creation of such highly low-loss structures for light is a prerequisite for complex light circuits, such as for quantum information processing for a new generation of computers. The researchers are now presenting their results in the journal Nature Photonics.
Light particles (photons) occur as tiny, indivisible portions. Many thousands of these light portions can be merged to form a single super-photon if they are...
For the first time, scientists have shown that circular RNA is linked to brain function. When a RNA molecule called Cdr1as was deleted from the genome of mice, the animals had problems filtering out unnecessary information – like patients suffering from neuropsychiatric disorders.
While hundreds of circular RNAs (circRNAs) are abundant in mammalian brains, one big question has remained unanswered: What are they actually good for? In the...
An experimental small satellite has successfully collected and delivered data on a key measurement for predicting changes in Earth's climate.
The Radiometer Assessment using Vertically Aligned Nanotubes (RAVAN) CubeSat was launched into low-Earth orbit on Nov. 11, 2016, in order to test new...
A study led by scientists of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg presents evidence of the coexistence of superconductivity and “charge-density-waves” in compounds of the poorly-studied family of bismuthates. This observation opens up new perspectives for a deeper understanding of the phenomenon of high-temperature superconductivity, a topic which is at the core of condensed matter research since more than 30 years. The paper by Nicoletti et al has been published in the PNAS.
Since the beginning of the 20th century, superconductivity had been observed in some metals at temperatures only a few degrees above the absolute zero (minus...
16.08.2017 | Event News
04.08.2017 | Event News
26.07.2017 | Event News
23.08.2017 | Life Sciences
23.08.2017 | Life Sciences
23.08.2017 | Physics and Astronomy