Sanba has now weakened to a Tropical Storm after making landfall in South Korea as a Typhoon earlier today. As of 5pm, Sanba was last located approximately 180km southeast of Seoul or about 270km north of Busan. Maximum sustained winds are down to 100kph with gusts of up to 130kph. Sanba is moving north northeastward at 40kph.
Sanba made landfall near the town of Namhae bringing typhoon-force winds in the area. Many stations recorded seeing sustained winds of about 100kph. Even the Nagasaki area and the outlying Japanese Islands west of Kyushu reported gusts of up to 140kph earlier this morning as the eye passed near the area. Aside from the strong winds, rainfall amounts of up to 250mm have been recorded in South Korea and more could fall tonight especially along the northern part of the country.
IR Image from NRLMRY
Latest satellite image shows Sanba transitioning into an extra-tropical cyclone. Circulation is becoming elongated with the convective activity weakening and becoming asymmetrical. Strong upper-level winds and dry air from the west are also contributing to the rapid weakening. Nevertheless, convection associated with Sanba is still bring rains across the Korean Peninsula.
Radar from KMA
Latest radar image from South Korea is still showing widespread light to moderate rains across South and North Korea. The southern part of South Korea is now dry and the showers are now mainly located across the border including Seoul area. Some parts here could still receive up to 50mm in the next 6 to 12 hours. Weather conditions in the region should start improving tonight and into tomorrow. For more radar images, forecasts, and warnings from South Korea, please click HERE (KMA)
Forecast Track (NOT OFFICIAL!)
Tropical Storm Sanba will continue rapidly weakening as it accelerates to the northeast. It will be moving into the Sea of Japan in the next couple of hours and could make its third and final landfall early tomorrow morning (Tuesday) along the North Korea/Russian border. Sanba will be moving very near Vladivostok in Russia as a weak Tropical Storm. It should complete extra-tropical transition tomorrow evening as it moves farther inland into the Russian Far East.
We'll have another update tomorrow.
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Issued (0930 UTC) 530pm PhT 091712
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