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Hurricane Season 2008: Tropical Storm Kammuri
August 7, 2008

Tropical Storm Kammuri Makes A Second Landfall in Southwest China

Tropical Storm KammuriTropical Storm Kammuri. Imgae credit: NASA/JPL
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Tropical Storm Kammuri made another landfall in southwest China's Guangxi Zhuang Autonomous Region today after striking neighboring Guangdong Province and the Beibu Gulf. The storm had winds of up to 62 miles per hour (100 kilometers per hour) and brought rains of up to 3.9 inches (99 millimeters) to the region. The storm then weakened and moved west. This infrared image of Kammuri was taken by the Atmospheric Infrared Sounder instrument on NASA's Aqua spacecraft at 5:47 UTC (1:47 a.m. EDT) August 7.

The AIRS image shows the temperature of the cloud tops or the surface of Earth in cloud-free regions. The lowest temperatures (in purple) are associated with high, cold cloud tops that make up the top of Tropical Storm Kammuri. The AIRS data creates an accurate 3-D map of atmospheric temperature, water vapor and clouds, all of which are helpful to forecasters.

The infrared signal of the AIRS instrument does not penetrate through clouds. Where there are no clouds, AIRS reads the infrared signal from the surface of the ocean waters, revealing warmer temperatures in orange and red.

Text credit: Alan Buis, JPL

August 6, 2008

Severe Tropical Storm Kammuri Comes Ashore on China's South Coast

Tropical Storm KammuriCloudSat data of Tropical Storm Kammuri. Imgae credit: NASA/JPL
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NASA's CloudSat satellite Cloud Profiling Radar captured this sideways view through the deep clouds of Severe Tropical Storm Kammuri on August 5. Kammuri made landfall along the south coast of China about 161 miles (259 kilometers) west of Hong Kong. The weakening storm is now moving westward into Guangxi and the northern Vietnam border, but not before raking the region with winds between 55 and 63 miles per hour (86 and 101 kilometers per hour).

The top image is from the NASA Aqua satellite, supplied through the U.S. Naval Research Laboratory. It shows the top of Kammuri at the same time that the CloudSat image, below, shows a sideways, curtain-view of what the clouds along the red line looked like.

The colors in the CloudSat image indicate the intensity of the reflected radar energy, red colors indicating the most intense reflected energy. This is a indication of large amounts of water and heavy rainfall. The top of Kammuri's clouds reach more than 11 miles (17 kilometers).

The blue areas along the top of the clouds indicate cloud ice, while the wavy blue lines on the bottom center of the image indicate intense rainfall reaching the surface. It is likely that in the area of intense rainfall the precipitation rate exceeds 1.18 inches per hour (30 millimeters per hour), based on previous studies.

Text credit: Alan Buis, JPL