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Flooding along the Gulf Coast September 23, 2008

Posted by jtintle in Planets, Space Fotos.
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Flooding along the Gulf Coast Image. Caption explains image.

NASA, Jesse Allen, Holli Riebeek, MODIS Rapid Response Team, Goddard Land Processes Data Archives (LAADS)

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September 17, 2008 (4.2 MB JPEG)
September 7, 2008 (4.7 MB JPEG)


Four days after Hurricane Ike swept ashore over the Gulf Coast of the United States, the clouds cleared enough for the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra satellite to view the storm’s impact. Taken on September 17, 2008, the top image shows a wide swath of coastal flooding not present on September 7, before Ike came ashore. In this type of image, made by combining infrared and visible light, water is black or dark blue, easily visible against the surrounding landscape. If seen in visible light alone, the way a person would see it, the flooded region and the surrounding land would blend together in shades of brown. Clouds, light blue and white, still partially obscure the view of the ground.
The images show the extent of coastal flooding that remains after four days. Ike was a monstrous storm, covering much of the Gulf of Mexico in the days before the storm came ashore. (See Hurricane Ike on the Earth Observatory.) The storm pushed a wall of water into the coast as it came ashore. The sheer size of the storm guaranteed that the surge covered a wide swath of Gulf Coast real estate. From east to west, this image stretches from Vermilion Bay, Louisiana, to East Bay (the eastern arm of Galveston Bay near Houston), Texas, a distance of about 275 kilometers (171 miles).

The floods also extend a long distance inland. The strip of black, indicative of floodwater, goes as much as 25 kilometers (16 miles) inland near the Texas/Louisiana border in this image. Much of the landscape in this region is marshland, which tends to retain floodwater longer than other types of landcover.

You can download a 250-meter-resolution KMZ file comparison of the region before and after Hurricane Ike suitable for use with Google Earth.

NASA image created by Jesse Allen, using data provided courtesy of the MODIS Rapid Response team and the Goddard Land Processes data archives (LAADS). Caption by Holli Riebeek.


Ike Comes Ashore September 17, 2008

Posted by jtintle in Planets, Space Fotos.
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Hurricane Ike

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Hurricane Ike covered more than half of Cuba in this image, taken by the Expedition 17 crew aboard the International Space Station from a vantage point of 220 statute miles above Earth. The center of Ike was near 22.4 degrees north latitude and 82.4 degrees west longitude and moving 290 degrees at 11.7 miles per hour. 

Ike came ashore in Texas at 2:10 a.m. CDT, Sept. 13 and brought a wall of water over 20 feet high, sweeping through Galveston Island, and on the mainland. The storm made landfall with sustained winds near 110 mph, just 1 mph short of a Category 3 hurricane. 

One of the station’s solar arrays is partially visible in the upper right corner.



Hurricane Ike September 13, 2008

Posted by jtintle in Planets, Space Fotos.
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Hurricane Ike Image. Caption explains image.

NASA, Jesse Allen 

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  Image Acquired:

September 02, 2008


As if in defiance of the unofficial end of summer, the Atlantic Ocean was queuing up a series of tropical storms after Labor Day in 2008. With Gustav raining out over the southern United States, and Hanna drenching the Bahamas, the next storm in the queue, Tropical Storm Ike, made its way westward on September 3.

This image from the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Aqua satellite on September 2 shows Ike getting organized in the central Atlantic. In the northwest (upper left) quadrant of the storm and in the western half of the eye, distinct clusters of thunderstorms give the storm a boiling appearance. In the east, the cloud deck is more diffuse, with wispy streamers like tassels around the edge. As of the 11:00 a.m. Eastern Daylight Time briefing from the National Hurricane Center, Ike’s wind speeds were about 70 mph, and it was expected to become a hurricane later that day.

NASA image created by Jesse Allen, using data provided courtesy of the MODIS Rapid Response team. Caption by Rebecca Lindsey.

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