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Tropical Storm Damrey (11W) South of Japan – July 31st, 2012

July 31st, 2012 Category: Image of the day, Tropical Storms

Tropical Storm Damrey – July 31st, 2012

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Tropical Storm Damrey - July 31st, 2012 © Univ. of Wisconsin

Tropical Storm Damrey

Tropical Storm Damrey (11W), located approximately 440 nm east-southeast of Sasebo, Japan, has tracked westward at 15 knots over the past six hours. Maximum significant wave height is 20 feet.

Originally a cold-core low on July 18, the system became a tropical disturbance southwest of Minamitorishima late on July 26. Early on July 27, the JMA upgraded it to a tropical depression, as it became better organized.

On July 28, the JTWC issued a TCFA on the system, before the JMA upgraded it to a tropical storm and named it Damrey. Late on the same day, the JTWC upgraded Damrey to a tropical depression. On July 29, the JTWC upgraded Damrey to a tropical storm. Late on July 30, the JMA upgraded Damrey to a severe tropical storm, as convection started to warp around the storm’s center of circulation.

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