Since Tropical Storm Karina weakened from hurricane status, and since then, NASA satellite data has shown that the storm has been pretty consistent with strength and thunderstorm development.
Hurricane Karina formed on August 13, 2014 off the Mexican coast. The Tropical Rainfall Measuring Mission or TRMM satellite passed directly above the center of intensifying tropical storm Karina on August 14, 2014 at 1927 UTC (3:27 p.m. EDT).
NASA's Aqua satellite passed over Tropical Storm Karina on August 18 at 6:23 a.m. EDT on Monday, August 18 and the AIRS instrument captured an infrared image. The image showed strong thunderstorms (purple) continued to circle the center.
Credit: NASA JPL/Ed Olsen
TRMM's Microwave Imager showed that storms near Karina's center were dropping rain at a rate of over 50mm (almost 2 inches) per hour. After that TRMM fly over, Karina was upgraded to a hurricane within a couple hours. However, in less than 24 hours, by August 15 at 5 a.m. EDT (0900 UTC), Karina weakened back to tropical storm status.
In the days that followed, Karina's cloud pattern didn't change much. Satellite data showed that strong thunderstorms still circle the center, especially on the northern edge.
NASA's Aqua satellite passed over Tropical Storm Karina on August 18 at 6:23 a.m. EDT on Monday, August 18 and the Atmospheric Infrared Sounder or AIRS instrument captured infrared data on the storm's clouds.
Infrared data basically shows temperature, and the AIRS data showed strong thunderstorms with cloud top temperatures near -63F/-52C indicating they were high in the troposphere. The bulk of the strong thunderstorms continued to be pushed to the northern quadrant as a result of southerly wind shear.
At 11 a.m. EDT (1500 UTC) Karina's maximum sustained winds remain near 45 mph (75 kph). The center of Tropical Storm Karina was located near latitude 16.8 north and longitude 132.4 west, that's about 1,500 miles (2,415 km) east of Hilo, Hawaii.
Karina is moving toward the west-southwest near 9 mph (15 kph) and is expected to slow down. The estimated minimum central pressure is 1002 millibars.
NHC's forecaster Avila noted that "Karina has the chance to slightly strengthen since the circulation is moving over warmer waters and into weaker shear. By the end of the forecast period, the outflow from larger Tropical Depression 12-E to the northeast should induce stronger shear and prevent additional strengthening."
Text credit: Rob Gutro
NASA's Goddard Space Flight Center
Rob Gutro | Eurek Alert!
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
Climate change: In their old age, trees still accumulate large quantities of carbon
17.08.2017 | Universität Hamburg
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
18.08.2017 | Life Sciences
18.08.2017 | Physics and Astronomy
18.08.2017 | Materials Sciences