ETAU crossed Japan and entered the Sea of Japan yesterday, completing extratropical transition afterwards. At 2 am, ETAU was centred about 500 km (270 NM) NNW of Osaka.
ETAU is the 83rd name in the tropical cyclone name list. It was contributed by the United States, and is the Palauan word for storm cloud. This name was used in 2003 and 2009.
ETAU is the 83rd name in the tropical cyclone name list. It was contributed by the United States, and is the Palauan word for storm cloud. This name was used in 2003 and 2009.
ETAU will move NW along the western periphery of the subtropical ridge in the next 24 hours, and is expected to slow down significantly, lingering in the Sea of Japan.
艾濤將於未來 24 小時沿副熱帶高壓脊西部向西北移動，並明顯減速，於日本海徘徊。
Intensity
Analysis 強度分析
Current T-number 現時的 T 號碼: N/A 不適用
Wind field scans yesterday showed storm force winds around ETAU's centre. However the storm is weakening quickly due to strong vertical wind shear and land interaction. ETAU is expected to weaken and become fully extratropical by t+24.
ETAU is the 83rd name in the tropical cyclone name list. It was contributed by the United States, and is the Palauan word for storm cloud. This name was used in 2003 and 2009.
ETAU will move NNW along the western periphery of the subtropical ridge in the next 36 hours. The storm is expected to track into a mid-latitude trough and becomes embedded in it near t+48, lingering in the Sea of Japan.
ETAU's convections become more organized and are clearly spinning around the low-level circulation centre. It is expected to strengthen prior to landfall at Japan. Thereafter, strong vertical wind shear and land interaction will result in a rapid decay of the system, leading to dissipation around t+72.
Tropical disturbance 92W has intensified into a tropical depression, and was given the number 18W and named ETAU earlier today. At 8 am, ETAU was centred about 350 km (190 NM) SW of Iwo Jima.
ETAU is the 83rd name in the tropical cyclone name list. It was contributed by the United States, and is the Palauan word for storm cloud. This name was used in 2003 and 2009.
ETAU is positioned west of a subtropical ridge, and is expected to move N to NNW steadily in the next 48 hours. The storm is expected to approach a mid-latitude trough and becomes embedded in it near t+72, lingering in southern Sea of Japan.
ETAU's low-level circulation centre is well-defined but convections are loose and disorganized. It is forecast to gather strength gradually in warm seas with little vertical wind shear, but will weaken sharply as it reaches Japan due to increasing shear and land interaction. Dissipation is expected by t+96.
Active Tropical Cyclone(s) 正活躍之熱帶氣旋
