Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

NASA satellites 'eyes' changes in Hurricane Katia

07.09.2011
Major Hurricane Katia continues to approach the U.S. East coast and stir up rough surf. Meanwhile two NASA satellites have provided a look at the changes in organization and cloud patterns over the last several days.

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!
Further information:
http://www.nasa.gov

More articles from Earth Sciences:

nachricht 'Quartz' crystals at the Earth's core power its magnetic field
23.02.2017 | Tokyo Institute of Technology

nachricht NASA spies Tropical Cyclone 08P's formation
23.02.2017 | NASA/Goddard Space Flight Center

All articles from Earth Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Breakthrough with a chain of gold atoms

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

Im Focus: DNA repair: a new letter in the cell alphabet

Results reveal how discoveries may be hidden in scientific “blind spots”

Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...

Im Focus: Dresdner scientists print tomorrow’s world

The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.

The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...

Im Focus: Mimicking nature's cellular architectures via 3-D printing

Research offers new level of control over the structure of 3-D printed materials

Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...

Im Focus: Three Magnetic States for Each Hole

Nanometer-scale magnetic perforated grids could create new possibilities for computing. Together with international colleagues, scientists from the Helmholtz Zentrum Dresden-Rossendorf (HZDR) have shown how a cobalt grid can be reliably programmed at room temperature. In addition they discovered that for every hole ("antidot") three magnetic states can be configured. The results have been published in the journal "Scientific Reports".

Physicist Dr. Rantej Bali from the HZDR, together with scientists from Singapore and Australia, designed a special grid structure in a thin layer of cobalt in...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Booth and panel discussion – The Lindau Nobel Laureate Meetings at the AAAS 2017 Annual Meeting

13.02.2017 | Event News

Complex Loading versus Hidden Reserves

10.02.2017 | Event News

International Conference on Crystal Growth in Freiburg

09.02.2017 | Event News

 
Latest News

From rocks in Colorado, evidence of a 'chaotic solar system'

23.02.2017 | Physics and Astronomy

'Quartz' crystals at the Earth's core power its magnetic field

23.02.2017 | Earth Sciences

Antimicrobial substances identified in Komodo dragon blood

23.02.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>