Issued (14 UTC) 10pm PhT 100813
Danas has weakened to a Tropical Storm as it moves quickly towards the Sea of Japan. Danas was last located approximately 120km east southeast of Busan, South Korea or about 150km north of Fukuoka, Japan. Maximum sustained winds have weakened to 110kph with gusts of up to 140kph. Tropical Storm Danas is moving northeastward at 40kph.
IR Image from FNMOC
Latest satellite image shows the storm moving between South Korean and Mainland Japan. Central convection is still somewhat intact despite the strong upper-level winds in East Asia. However, the upper-level circulation is beginning to be separated with the low-level center leaving the latter somewhat exposed on satellite images. Danas is also beginning extra-tropical transition as it encounters the baroclinic zone located in the region. We expect extra-tropical transition to be completed by tomorrow.
Radar Image from JMA
Latest radar shows bands of light to moderate rains continue to push eastward into parts of Honshu. The main batch of precipitation is over the sea; still, 50 to 100mm could fall tonight and into tomorrow across parts of Honshu. Earlier today, parts of Kyushu and even South Korea received heavy rainfall accumulating to as much as 150mm in some areas. Winds of up to 140kph were also recorded along coastal locations. For the latest radar image and forecasts from Japan, please click HERE (JMA Website)
Tropical Storm Danas will continue moving northeastward across the Sea of Japan tonight. It will continue to bring scattered rains across the western (northern) coast of Honshu. Danas is forecast to complete extra-tropical transition by tomorrow before it moves into the Tohoku Region of Northern Honshu later tomorrow.
We'll have another update tomorrow morning.