One NASA instrument that flies aboard two different NASA satellites has been providing very clear pictures of Hurricane Katia's transition over the last couple of days. The Moderate Resolution Imaging Spectroradiometer or MODIS instrument flies on NASA's Aqua and Terra satellites.
The MODIS instrument on NASA's Terra satellite captured this visible image of Hurricane Katia on Sept. 5 at 11:30 a.m. EDT. Katia is a major hurricane in the Atlantic Ocean, and her eye, although filled with some clouds, remains visible. Credit: Credit: NASA Goddard/MODIS Rapid Response Team
At 11:00 a.m. AST, September 2, Hurricane Katia had winds of 75 miles per hour with higher gusts when MODIS captured a natural color image of her. The image was taken by the MODIS instrument on NASA's Aqua satellite at 12:25 p.m. AST when Katia was east of the Leeward Islands. Although the hurricane lacked a distinct eye, it sported the spiral shape characteristic of strong storms.
Two days later, the MODIS instrument on NASA's Terra satellite captured a visible image of Hurricane Katia and her eye was completely cloud-filled. Then, on Sept. 5 at 11:30 a.m. EDT, when Katia was a major hurricane in the Atlantic Ocean, some of the cloud cover cleared over her eye as a testament to her major hurricane status.
On Sept. 6, Hurricane Katia appeared less symmetric and once again, her eye was less obvious. Satellite imagery indicated a double-eyewall within the storm, suggestions that Katia is undergoing eyewall replacement again (which happens in major hurricanes).
The National Hurricane Center noted that "the large-scale atmospheric and oceanic environment are likely to remain conducive for Katia to maintain major hurricane status."
At 5 a.m. EDT on Sept. 6, Hurricane Katia's maximum sustained winds were near 125 mph with higher gusts. That makes Katia a Category 3 hurricane on the Saffir-Simpson scale and a major one. Katia was about 400 miles (645 km) south of Bermuda near latitude 26.5 north and longitude 65.1 west. Katia is moving toward the northwest near 10 mph (17 km/h) and will continue in that direction one more day before turning to the north-northwest by Thursday.
A slow-moving cold front and the remnants of Tropical Storm Lee are blocking powerful Hurricane Katia from coming closer to the U.S. However, Katia is close enough to create rough and hazardous surf and rip currents along the U.S. east coast. Bermuda, the greater Antilles and east-facing beaches of the Bahamas are also expected to experience large and dangerous swells, rip currents and life-threatening surf over the next several days.
Rob Gutro | EurekAlert!
Research sheds new light on forces that threaten sensitive coastlines
24.04.2017 | Indiana University
NASA sees the end of ex-Tropical Cyclone 02W
21.04.2017 | NASA/Goddard Space Flight Center
More and more automobile companies are focusing on body parts made of carbon fiber reinforced plastics (CFRP). However, manufacturing and repair costs must be further reduced in order to make CFRP more economical in use. Together with the Volkswagen AG and five other partners in the project HolQueSt 3D, the Laser Zentrum Hannover e.V. (LZH) has developed laser processes for the automatic trimming, drilling and repair of three-dimensional components.
Automated manufacturing processes are the basis for ultimately establishing the series production of CFRP components. In the project HolQueSt 3D, the LZH has...
Reflecting the structure of composites found in nature and the ancient world, researchers at the University of Illinois at Urbana-Champaign have synthesized thin carbon nanotube (CNT) textiles that exhibit both high electrical conductivity and a level of toughness that is about fifty times higher than copper films, currently used in electronics.
"The structural robustness of thin metal films has significant importance for the reliable operation of smart skin and flexible electronics including...
The nearby, giant radio galaxy M87 hosts a supermassive black hole (BH) and is well-known for its bright jet dominating the spectrum over ten orders of magnitude in frequency. Due to its proximity, jet prominence, and the large black hole mass, M87 is the best laboratory for investigating the formation, acceleration, and collimation of relativistic jets. A research team led by Silke Britzen from the Max Planck Institute for Radio Astronomy in Bonn, Germany, has found strong indication for turbulent processes connecting the accretion disk and the jet of that galaxy providing insights into the longstanding problem of the origin of astrophysical jets.
Supermassive black holes form some of the most enigmatic phenomena in astrophysics. Their enormous energy output is supposed to be generated by the...
The probability to find a certain number of photons inside a laser pulse usually corresponds to a classical distribution of independent events, the so-called...
Microprocessors based on atomically thin materials hold the promise of the evolution of traditional processors as well as new applications in the field of flexible electronics. Now, a TU Wien research team led by Thomas Müller has made a breakthrough in this field as part of an ongoing research project.
Two-dimensional materials, or 2D materials for short, are extremely versatile, although – or often more precisely because – they are made up of just one or a...
20.04.2017 | Event News
18.04.2017 | Event News
03.04.2017 | Event News
24.04.2017 | Life Sciences
24.04.2017 | Earth Sciences
24.04.2017 | Machine Engineering