NAMTHEUN has weakened into a severe tropical storm. At 2 pm, NAMTHEUN was centred about 95 km (50 NM) WNW of Kagoshima.

南川已減弱為強烈熱帶風暴。在下午 2 時，南川集結在鹿兒島西北偏西約 95 公里 (50 海里)。

NAMTHEUN is the 104th name in the tropical cyclone name list. It was contributed by Laos, meaning river. This name was used in 2004 and 2010.

南川為熱帶氣旋名稱列表中第 104 個名字，由老撾提供，意思為河流。此名曾於 2004 及 2010 年使用。

NAMTHEUN is now slowly crossing the subtropical ridge axis. It is expected to turn NNE and then NE at an increasing speed along the northwestern periphery of the subtropical ridge in the next 48 hours.

南川正緩慢橫過副熱帶高壓脊脊線，預料會於未來 48 小時沿該脊西北部向東北偏北轉東北加速移動。

Current T-number 現時的 T 號碼: T3.0/3.5/W1.0/24 HRS

NAMTHEUN's core is becoming loose and the storm is shrinking. With stronger vertical wind shear in the region and its proximity to western Japan, the storm will weaken steadily in the next 48 hours. NAMTHEUN now has a higher chance of weakening into an low pressure area in the Sea of Japan before turning extratropical.

南川的中心部分變得鬆散，風暴有所收縮。南川附近垂直風切變較強，加上風暴靠近日本西部，預料會於未來 48 小時繼續穩定減弱。現時預料南川或會於轉化前在日本海減弱為低壓區。

No threat to Hong Kong is expected within the next 72 hours.

預料南川於未來的 72 小時將不會對香港構成影響。

2016/09/05 (Mon 一), afternoon 下午 (or earlier 或更早)

N/A 不適用

NAMTHEUN briefly intensified into category 3 yesterday, but the storm is now under a weakening trend. At 2 pm, NAMTHEUN was centred about 190 km (110 NM) SSW of Kagoshima.

南川昨日短暫增強為三級颱風，但隨後開始呈減弱之勢。在下午 2 時，南川集結在鹿兒島西南偏南約 190 公里 (110 海里)。

NAMTHEUN is the 104th name in the tropical cyclone name list. It was contributed by Laos, meaning river. This name was used in 2004 and 2010.

南川為熱帶氣旋名稱列表中第 104 個名字，由老撾提供，意思為河流。此名曾於 2004 及 2010 年使用。

NAMTHEUN is moving NNW along the western periphery of the subtropical ridge. It is expected to move NNW turning to N and cross the ridge axis near t+24, followed by a recurvature to the NNE or NE at an increasing speed.

南川正沿副熱帶高壓脊西部向西北偏北移動。預料南川將向西北偏北轉北移動，於約 24 小時後橫過脊線，隨後加速轉向東北偏北至東北。

Current T-number 現時的 T 號碼: T4.0/4.5/W1.0/24 HRS

NAMTHEUN's eye is filling and the weakening trend is clear as seen from JMA's radar images. NAMTHEUN is entering a region with higher vertical wind shear, and its proximity to western Japan will also contribute to its weakening. The storm is expected to become an extratropical cyclone by t+72.

南川的風眼正被填塞，其減弱趨勢於日本氣象廳的雷達影像上清楚可見。南川逐漸進入較高垂直風切變的地區，加上風暴靠近日本西部，預料會繼續減弱。預料南川將於 72 小時後轉化為溫帶氣旋。

No threat to Hong Kong is expected within the next 72 hours.

預料南川於未來的 72 小時將不會對香港構成影響。

2016/09/04 (Sun 日), afternoon 下午 (or earlier 或更早)

N/A 不適用

NAMTHEUN has intensified into a typhoon. At 2 pm, NAMTHEUN was centred about 310 km (170 NM) ENE of Okinawa.

南川已增強為颱風。在下午 2 時，南川集結在沖繩島東北偏東約 310 公里 (170 海里)。

NAMTHEUN is the 104th name in the tropical cyclone name list. It was contributed by Laos, meaning river. This name was used in 2004 and 2010.

南川為熱帶氣旋名稱列表中第 104 個名字，由老撾提供，意思為河流。此名曾於 2004 及 2010 年使用。

NAMTHEUN is expected to move N or NNW along the western periphery of the subtropical ridge. It should cross the ridge axis near t+36, after which a recurvature to the NNE or NE at an increasing speed is expected.

預料南川將沿副熱帶高壓脊西部向北或西北偏北移動，於約 36 小時後越過副高脊線，隨後向東北偏北至東北加速移動。

Current T-number 現時的 T 號碼: T5.0/5.0/D2.0/24 HRS

NAMTHEUN's formative eye was not very stable yesterday, but the eye reappeared today and it seems to be deepening over the past 6 hours, leading to the current category 2 assessment. The storm is expected to intensify in the next 12 hours in warm seas with low vertical wind shear. Thereafter, a combination of land interaction, increasing shear and lower sea temperatures will induce a weakening trend. Extratropical transition is expected by t+96.

昨日南川的風眼雛型並未穩定，但風眼於今天重現，而且於過去 6 小時有加深跡象，風暴現時評定為二級颱風。在溫暖海域及低垂直風切變的環境中，預料南川會於未來 12 小時增強。之後，南川將受陸地影響，加上較高垂直風切變及海溫轉冷等因素，其強度將逐漸下降。預料風暴將於 96 小時後轉化為溫帶氣旋。

No threat to Hong Kong is expected within the next 72 hours.

預料南川於未來的 72 小時將不會對香港構成影響。

2016/09/03 (Sat 六), afternoon 下午 (or earlier 或更早)

N/A 不適用

Tropical disturbance 94W intensified into tropical depression 15W last night. It was upgraded into a tropical storm by the JMA this morning and was named NAMTHEUN. Since then, NAMTHEUN has intensified quickly and is now assessed at severe tropical storm intensity. At 2 pm, NAMTHEUN was centred about 250 km (140 NM) SSE of Okinawa.

熱帶擾動 94W 昨晚增強為熱帶低氣壓 15W。日本氣象廳今早將其升格為熱帶風暴，並命名為南川。南川其後快速增強，至現時評估達強烈熱帶風暴強度。在下午 2 時，南川集結在沖繩島東南偏南約 250 公里 (140 海里)。

NAMTHEUN is the 104th name in the tropical cyclone name list. It was contributed by Laos, meaning river. This name was used in 2004 and 2010.

南川為熱帶氣旋名稱列表中第 104 個名字，由老撾提供，意思為河流。此名曾於 2004 及 2010 年使用。

NAMTHEUN is currently moving northeast along the northwestern periphery of an equatorial ridge in tropical Pacific. The storm is expected to turn north soon as the subtropical ridge dominates to the east of the storm at higher latitudes. NAMTHEUN is forecast to make landfall in Kyushu two days later, and then turn to the NNE to NE along the periphery of the ridge.

南川正沿處於熱帶太平洋的赤道高壓脊之西北部向東北移動。由於副熱帶高壓脊盤據於較高緯度，預料南川不久後將沿此脊西部向北移動，於兩天後登陸九州，隨後繼續沿副高周邊向東北偏北至東北移動。

Current T-number 現時的 T 號碼: T3.0/3.0/INT OBS

南川於過去 24 小時大幅增強，由一低壓區發展成擁有緊密雲帶的系統。風暴中心似乎有一風眼雛型，但尚需時間判斷其屬性。風暴處於溫暖海域，垂直風切變較低，預料能於未來 36 小時增強。之後，風暴將受陸地影響，加上較高垂直風切變及海溫下降等因素，其強度將逐漸下降。

No threat to Hong Kong is expected within the next 72 hours.

預料南川於未來的 72 小時將不會對香港構成影響。

2016/09/02 (Fri 五), afternoon 下午 (or earlier 或更早)

N/A 不適用