Tropical Cyclone Alenga Dec 8 2011 0705Z

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NASA image courtesy LANCE/EOSDIS MODIS Rapid Response Team at NASA GSFC. Caption by Michon Scott.

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https://dewiki.de/b/176b2c

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Tropical Storm Alenga formed over the Indian Ocean on December 5, 2011, and strengthened into a cyclone two days later. On December 8, 2011, the U.S. Navy’s Joint Typhoon Warning Center (JTWC) reported that Alenga was located roughly 400 nautical miles (740 kilometers) south-southeast of the Cocos Islands. Alenga had maximum sustained winds of 80 knots (150 kilometers per hour) with gusts up to 100 knots (185 kilometers per hour).

The Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Aqua satellite captured this natural-color image on December 8, 2011. Although a central eye is barely discernible, Alenga bears the spiral shape characteristic of strong storms.

The JTWC forecast that Alenga would continue moving in a southeastward direction, but increasing vertical wind shear (changing wind speed and direction with altitude) and decreasing sea surface temperatures would likely weaken the storm.

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Public domain

Credit:

http://earthobservatory.nasa.gov/NaturalHazards/view.php?id=76627

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