Tropical Storm 2W -Northwest Pacific Ocean


The second tropical depression of the Northwestern Pacific Ocean season has formed, just as the first depression has dissipated. NASA's Aqua satellite captured an infrared image of the depression and observed some strong thunderstorms within, and the storm has already caused warnings to be posted.

On April 5, 2011, Tropical Depression 2W formed about 270 miles (434 km) NW of Anderson Air Force Base, Guam, near 16.1 South and 141.1 East. It was moving east-northeast near 19 knots and had maximum sustained winds near 30 knots. The Northern Marianas are expected to feel the effects of the depression as it continues to move in that direction. A tropical storm warning is in force for Agriahan, Pagan and Alamagan Islands in the Northern Mariana Islands.

The Atmospheric Infrared Sounder instrument on NASA's Aqua satellite captured an infrared image of Tropical Depression 2W on April 5 at 0353 UTC. It showed cold, high, strong thunderstorms around the center of circulation with heavy rainfall west of the Northern Marianas islands.

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