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File:Tropical Cyclone Alenga Dec 8 2011 0705Z.jpg

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English: 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.
Date
Source http://earthobservatory.nasa.gov/NaturalHazards/view.php?id=76627
Author NASA image courtesy LANCE/EOSDIS MODIS Rapid Response Team at NASA GSFC. Caption by Michon Scott.

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Public domain This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.)
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8 December 2011

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Date/TimeThumbnailDimensionsUserComment
current11:59, 8 December 2011Thumbnail for version as of 11:59, 8 December 20116,000 × 6,940 (5.14 MB)Supportstorm{{Information |Description ={{en|1=Tropical Cyclone Alenga on December 8, 2011}} |Source =http://lance-modis.eosdis.nasa.gov/wms/?zoom=5&lat=-16.48242&lon=92.36133&layers=000B0FFFFT&datum1=12/08/2011 |Author =NASA, MODIS Rapid Response

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