MA-ON has weakened into a tropical depression. At 2 pm, MA-ON was centred about 500 km (270 NM) SE of Iwo Jima.
馬鞍已減弱為熱帶低氣壓。在下午 2 時,馬鞍集結在硫磺島東南約 500 公里 (270 海里)。
TC
Naming 氣旋命名
MA-ON is the 116th name in the tropical cyclone name list. It was contributed by Hong Kong, and is the name of a mountain. This name was used in 2004 and 2011.
MA-ON will move W to WNW along the low-level easterlies.
馬鞍將沿低層偏東氣流向西或西北偏西移動。
Intensity
Analysis 強度分析
Current T-number 現時的 T 號碼: T1.0/1.5/W1.5/24 HRS
MA-ON's low-level circulation centre has become exposed with convections sheared to the eastern periphery. The storm is struggling in a moderate shear environment and is expected to dissipate over water soon.
MA-ON is the 116th name in the tropical cyclone name list. It was contributed by Hong Kong, and is the name of a mountain. This name was used in 2004 and 2011.
MA-ON will continue to move WNW along the southwestern periphery of the Pacific subtropical ridge in the next 24 hours. The steering force is expected to weaken at that time, allowing MA-ON to decelerate.
MA-ON's convections have become more symmetric but the low-level circulation centre is still not complete according to the wind field analysis this morning. The storm is entering a region with slightly higher vertical wind shear; little change in intensity is expected in the next 12 to 24 hours, but gradual weakening is expected after that. The storm will likely dissipate over water near t+48.
Tropical disturbance 95W in northwest Pacific intensified into tropical depression 27W earlier today. It strengthened further into a tropical storm this afternoon, and was named MA-ON. At 2 pm, MA-ON was centred about 1700 km (920 NM) ESE of Iwo Jima.
MA-ON is the 116th name in the tropical cyclone name list. It was contributed by Hong Kong, and is the name of a mountain. This name was used in 2004 and 2011.
MA-ON is currently situated in the southwestern periphery of the Pacific subtropical ridge. The storm is expected to move WNW steadily in the next 48 hours, and then decelerate as the steering force weakens.
MA-ON's convections are displaced to the east of the low-level circulation centre. A wind field analysis scan this morning suggests gale force winds in its northeastern quadrant, but the circulation centre is not very complete. The storm is in a low vertical wind shear environment, with somewhat weaker upper-level divergence along its projected path. Numerical models are not suggesting sigificant development, and dissipation is likely by t+72.