Tropical depression 19W was the latest of four tropical cyclones to move over Vietnam this season. The Tropical Rainfall Measuring Mission (TRMM) satellite passed directly above TD 19W on December 13, 2010 at 2038 UTC (3:38 p.m. EST) and collected rainfall data. TRMM’s Precipitation Radar (PR) showed that a few powerful thunderstorms embedded within TD 19W were dropping heavy rainfall off Vietnam’s south-eastern coast. The heaviest rainfall was falling at a rate of about 2 inches per hour over the coastal waters of Vietnam. TRMM is a joint mission between NASA and the Japanese space agency JAXA.
Although TD 19W was very small it’s rainfall added to October’s extreme rainfall amounts that contributed to the worst flooding seen in the country of Vietnam for 20 years. Flooding was widespread in the central provinces of Nghe An, Quang Tri, Quang Binh, Thua Thien Hue, and Ha Tinh. Deadly tropical storms Mindulle and Conson hit Vietnam in July and August. Tropical depression 18W in November also added to Vietnam’s extremely high 2010 rainfall totals.
According to the Joint Typhoon Warning Center, the organization that forecasts tropical cyclones in that area of the world, TD 19W’s remnant s have already moved ashore and are now affecting southern and central Cambodia.
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