USAGI passed at around 80 km NNE of Hong Kong Observatory earlier today and has now retreated and weakened into a severe tropical storm. At 8 am, USAGI was centred about 220 km (120 NM) NW of Hong Kong. The #8 SW Gale or Storm Signal is still in force.

天兔今天較早時於香港天文台東北偏北約 80 公里處掠過，之後開始遠離，並已減弱為強烈熱帶風暴。在上午 8 時，天兔集結在香港西北約 220 公里 (120 海里)。八號西南烈風或暴風信號仍然生效。

USAGI is the 33rd name in the tropical cyclone name list. It was contributed by Japan, meaning the constellation Lepus. This name was used in 2001 and 2007.

天兔為熱帶氣旋名稱列表中第 33 個名字，由日本提供，為一星座名稱。此名曾於 2001 及 2007 年使用。

USAGI is expected to move WNW turning to W gradually along the southern periphery of the subtropical ridge.

天兔將沿副熱帶高壓脊南部向西北偏西轉西移動。

Current T-number: N/A
USAGI is weakening rapidly as it loses energy inland. The storm is expected to degenerate into an area of low pressure by t+24.

現時的 T 號碼: 不適用
天兔登陸後喪失能量，減弱速度加快。預料天兔會於 24 小時內減弱為低壓區。

Winds have subsided appreciably with no station recording gale force winds at this moment, but rainbands are still affecting the territory. As USAGI moves further away, rain will also start to diminish later today.

本港風勢明顯減弱，已經沒有測風站錄得烈風，但天兔的雨帶仍然影響香港。隨著天兔繼續遠離，雨勢亦會於今日稍後減弱。

2013/09/24 (Tue 二), morning 上午 (or earlier 或更早)

USAGI has made landfall near Shanwei while travelling WNW. At 8 pm, USAGI was centred about 140 km (80 NM) ENE of Hong Kong. The #8 NW Gale or Storm Signal was issued at 6:40 pm. [Update at 23/9 12:30am: The #8 NW Signal was replaced by the #8 SW Signal at 12:25 am]

天兔向西北偏西移動，已於汕尾一帶登陸。在下午 8 時，天兔集結在香港東北偏東約 140 公里 (80 海里)。天文台於下午 6 時 40 分改發八號西北烈風或暴風信號。[於 23/9 上午 12:30 更新：天文台已於上午 12:25 改發八號西南烈風或暴風信號，取代西北信號。]

USAGI is the 33rd name in the tropical cyclone name list. It was contributed by Japan, meaning the constellation Lepus. This name was used in 2001 and 2007.

天兔為熱帶氣旋名稱列表中第 33 個名字，由日本提供，為一星座名稱。此名曾於 2001 及 2007 年使用。

USAGI is expected to move WNW turning to W gradually along the southern periphery of the subtropical ridge.

天兔將沿副熱帶高壓脊南部向西北偏西轉西移動。

Current T-number: N/A
USAGI's eye was filled as it made landfall. The storm is expected to weaken steadily inland and degenerate into a low area pressure by t+48.

現時的 T 號碼: 不適用
天兔登陸後風眼被填塞。預料天兔會於陸上穩定減弱，於 48 小時後減弱為低壓區。

Northwesterly winds are reaching gale force at some locations, and will continue to strengthen tonight. USAGI is expected to be closest to Hong Kong near midnight, passing at a distance of around 100 km. Wind direction will back to SW early tomorrow. Weather will remain inclement at least until tomorrow morning. High tide (2.2m) is predicted at around 11 pm tonight; flooding is possible at low-lying areas.

部分地區已吹西北烈風，風力會於今晚進一步加強。預料天兔將於午夜前後最接近香港，於本港 100 公里左右掠過。本地風向會於明日早段逆轉為西南，而惡劣天氣會至少維持至明早。今晚 11 時漲潮預計達 2.2 米，屆時低窪地區可能水浸。

2013/09/23 (Mon 一), morning 上午 (or earlier 或更早)

As USAGI's latitude is already north of Hong Kong, the Hurricane Signal #10 is rather unlikely. However if winds strengthen rapidly to storm force as USAGI nears, the Increasing Gale or Storm Signal #9 is still possible.

由於天兔緯度已明顯比香港北，發出十號颶風信號的可能性較低，但如天兔靠近時風勢急速增強至暴風程度，仍有一定機會發出九號烈風或暴風增強信號。

USAGI moved WNW in the past 12 hours and has weakened into a category 3 typhoon. At 8 am, USAGI was centred about 400 km (220 NM) E of Hong Kong. The Strong Wind Signal #3 was issued at 11:40 pm last night.

天兔於過去 12 小時向西北偏西移動，且減弱為三級颱風。在上午 8 時，天兔集結在香港以東約 400 公里 (220 海里)。天文台於昨晚 11 時 40 分改發三號強風信號。

USAGI is the 33rd name in the tropical cyclone name list. It was contributed by Japan, meaning the constellation Lepus. This name was used in 2001 and 2007.

天兔為熱帶氣旋名稱列表中第 33 個名字，由日本提供，為一星座名稱。此名曾於 2001 及 2007 年使用。

USAGI is expected to move WNW turning to W gradually along the southern periphery of the subtropical ridge. Track speed is forecast at around 18 km/h before landfall.

天兔將沿副熱帶高壓脊南部向西北偏西轉西移動。預料天兔登陸前移速維持大約每小時 18 公里。

Current T-number: T5.0/5.5/W0.5/24 HRS
USAGI maintained tight convective bands although the eye is partially cloud-filled. The storm is expected to weaken slightly prior to landfall, and rapidly afterwards.

現時的 T 號碼: T5.0/5.5/W0.5/24 HRS
天兔風眼部分被雲覆蓋，但環流仍然緊密。預料天兔會於登陸前稍為減弱，隨後減弱速度加快。

USAGI's rainbands are about to affect Hong Kong. Winds will pick up gradually today, coming in from the northwest. The Observatory has already indicated that it will consider higher signals this afternoon or evening. The storm will be very close to Hong Kong between tonight and tomorrow morning, and gale to storm force winds are extremely likely. USAGI is more likely to make landfall east of Hong Kong; wind direction should back to southwest tomorrow, maintaining gale force early morning.

天兔的雨帶即將影響香港。本港西北風將於今天逐漸增強，而天文台已經表示將於下午至黃昏考慮改發更高信號。風暴將於今晚及明早非常接近本港，預料很大機會吹烈風或暴風。天兔較大可能於香港以東登陸，預料風向將於明天逆轉為西南風，早上初段風力仍然達烈風程度。

2013/09/22 (Sun 日), night 晚間 (or earlier 或更早)

USAGI has weakened into a category 4 typhoon and is now crossing Luzon Strait. At 2 pm, USAGI was centred about 700 km (380 NM) ESE of Hong Kong. The Standby Signal #1 was issued at 10:40 am.

天兔減弱至四級颱風，現正橫過呂宋海峽。在下午 2 時，天兔集結在香港東南偏東約 700 公里 (380 海里)。天文台於上午 10 時 40 分發出一號戒備信號。

USAGI is the 33rd name in the tropical cyclone name list. It was contributed by Japan, meaning the constellation Lepus. This name was used in 2001 and 2007.

天兔為熱帶氣旋名稱列表中第 33 個名字，由日本提供，為一星座名稱。此名曾於 2001 及 2007 年使用。

USAGI is expected to move WNW turning to W gradually as it nears the southern edge of the subtropical ridge. Track speed is forecast at around 18 km/h before landfall.

天兔將向西北偏西移動，並於到達副熱帶高壓脊南部時轉向偏西移動。預料天兔登陸前移速維持大約每小時 18 公里。

Current T-number: T5.5/6.0/W1.0/24 HRS
USAGI has weakened slightly due to land interaction. It is also evident from satellite and radar images that an eyewall replacement cycle has started and USAGI is now exhibiting a double eyewall structure. This will prevent the storm from strengthening in the next 12 hours. Nevertheless, a general weakening trend is expected as influence from southern China landmass increases. USAGI will lose strength at a faster pace after landfall.

現時的 T 號碼: T5.5/6.0/W1.0/24 HRS
受地形影響，天兔稍為減弱。從衛星及雷達圖上可見天兔正進行眼牆置換週期，天兔現時出現雙重眼壁結構，這會令風暴於未來 12 小時無法增強。整體來說，隨著天兔靠近華南沿岸，陸地影響將漸見明顯，預料天兔會繼續減弱。風暴減弱速度會於登陸後明顯加快。

Due to USAGI's subsidence Hong Kong is affected by haze and very hot weather. North to northwesterly winds will strengthen tonight and the weather will deteriorate rapidly starting from early tomorrow. According to the present forecast track USAGI will be extremely close to Hong Kong (with possible landfall) between Sunday night and Monday morning, with considerable strength. Cyclonic winds of up to hurricane force is possible. Precautionary measures should be taken now to guard against damage from wind and storm surge.

香港正受天兔的下沉氣流影響，天氣酷熱且有煙霞。預料北至西北風將於今晚加強，天氣會於明早開始急劇轉壞。按照目前預測路徑，天兔將維持一定強度，於周日晚間至周一早上非常接近香港，並有可能於本港登陸，屆時香港有機會吹達颶風程度旋風。各位請即做好預防措施，以應對強風及風暴潮所帶來的破壞。

2013/09/22 (Sun 日), morning 上午 (or earlier 或更早)

USAGI intensified into a category 5 super typhoon last night, but has weakened slightly this morning. At 2 pm, USAGI was centred about 550 km (300 NM) SE of Kaohsiung.

天兔昨晚增強為五級超級颱風，但今早稍為減弱。在下午 2 時，天兔集結在高雄東南約 550 公里 (300 海里)。

USAGI is the 33rd name in the tropical cyclone name list. It was contributed by Japan, meaning the constellation Lepus. This name was used in 2001 and 2007.

天兔為熱帶氣旋名稱列表中第 33 個名字，由日本提供，為一星座名稱。此名曾於 2001 及 2007 年使用。

USAGI is moving NW along the SW periphery of the subtropical ridge. The storm is expected to turn WNW soon as it reaches higher latitudes, and later to W along the southern edge of the ridge towards southern Guangdong.

天兔繼續沿副熱帶高壓脊西南部向西北移動。隨著天兔到達較高緯度，預料它即將轉向西北偏西移動，其後因到達副高南沿而西移，趨向廣東南部。

Current T-number: T6.5/7.0/D0.5/24 HRS; W0.5/06 HRS
USAGI reached category 5 intensity last night, but the storm appears to be weakening since this morning. The eye is still very clear but eyewall cloud top temperatures have risen. USAGI is expected to weaken further as it nears southern Taiwan and it may undergo eyewall replacement cycle. After landfall USAGI should lose strength more rapidly although it is expected to stay near coastal areas.

現時的 T 號碼: T6.5/7.0/D0.5/24 HRS; W0.5/06 HRS
天兔昨晚達到五級強度，但從今早開始風暴似乎正在減弱。天兔的風眼仍然十分清晰，但眼牆雲頂溫度有所提升。天兔將逐漸靠近台灣南部，亦有可能進行眼牆置換，預料會繼續減弱。雖然預測天兔會橫過沿岸地區，它減弱的速度仍會於登陸後明顯加快。

Haze will continue to affect Hong Kong today and tomorrow. As USAGI edges closer local weather will deteriorate on Sunday with strengthening north to northwesterly winds and increasingly frequent squally showers. USAGI's effect on Hong Kong depends very much on how north the storm goes before turning to the west. In the current forecast USAGI will be very close to Hong Kong on Sunday night to early Monday; gales are very likely at that time.

香港於今明兩天將繼續受煙霞影響。隨著天兔靠近，本港天氣將於周日轉壞，北至西北風將增強而狂風驟雨亦會漸轉頻密。天兔對香港的影響取決於它轉向西移時的緯度，此發佈預料天兔會於周日晚間至周一早段非常接近香港，屆時香港很有可能吹烈風。

2013/09/21 (Sat 六), afternoon 下午 (or earlier 或更早)

USAGI dipped south before turning NNW, and has rapidly intensified into a category 4 typhoon. At 2 pm, USAGI was centred about 820 km (440 NM) ENE of Manila.

天兔稍為南移後轉向西北偏北，並急速增強為四級颱風。在下午 2 時，天兔集結在馬尼拉東北偏東約 820 公里 (440 海里)。

USAGI is the 33rd name in the tropical cyclone name list. It was contributed by Japan, meaning the constellation Lepus. This name was used in 2001 and 2007.

天兔為熱帶氣旋名稱列表中第 33 個名字，由日本提供，為一星座名稱。此名曾於 2001 及 2007 年使用。

As USAGI strengthens, it is now subject to higher level steering. In that layer the subtropical ridge has clearly extended south to the east of USAGI. This contributed to the abrupt turn to the NNW. As USAGI moves to higher latitude, it is expected to turn WNW and later W as it approaches the southern periphery of the ridge. Track speed is expected to increase to around 20 km/h as the storm crosses Luzon Strait, but drops towards the end of the forecast period.

隨著天兔增強，它開始受較高層氣流引導，而副熱帶高壓脊於該層已明顯在天兔以東南伸，這令天兔突然轉向西北偏西移動。當天兔到達較高緯度，它將靠近副高南沿，預料會改向西北偏西轉西移動。預測天兔橫過呂宋海峽時移速將增加至每小時 20 公里，隨後速度下降。

Current T-number: T6.0/6.0/D2.5/24 HRS
USAGI developed a central dense overcast over the past 12 hours and a clear eye has emerged. The atmospheric environment is still supportive of some intensification and USAGI is expected to intensify into a super typhoon in the next 12 hours. The storm should start to weaken later due to the South China terrain.

現時的 T 號碼: T6.0/6.0/D2.5/24 HRS
天兔於過去 12 小時發展出一中心密集雲區，並形成一清晰風眼。由於大氣環境仍然有利增強，預料天兔會於未來 12 小時增強為超級颱風。受華南地形影響，天兔於較後時間會開始減弱。

As USAGI nears Luzon Strait, haze is expected in the next two days. After USAGI enters the South China Sea, local weather will deteriorate on Sunday with showers and strengthening north to northwesterly winds.

隨著天兔靠近呂宋海峽，香港將於未來兩天受煙霞影響。之後天兔進入南海，本港天氣將於周日轉壞，北至西北風將增強並會有驟雨。

2013/09/20 (Fri 五), afternoon 下午 (or earlier 或更早)

USAGI has intensified into a severe tropical storm. At 2 pm, USAGI was centred about 1030 km (560 NM) ENE of Manila.

天兔已增強為強烈熱帶風暴。在下午 2 時，天兔集結在馬尼拉東北偏東約 1030 公里 (560 海里)。

USAGI is the 33rd name in the tropical cyclone name list. It was contributed by Japan, meaning the constellation Lepus. This name was used in 2001 and 2007.

天兔為熱帶氣旋名稱列表中第 33 個名字，由日本提供，為一星座名稱。此名曾於 2001 及 2007 年使用。

The subtropical ridge is positioned rather north and the influence on USAGI is currently quite weak. USAGI is expected to pick up speed soon, moving W along the southern periphery of the ridge. Between t+24 and t+48 the ridge is expected to extend south at east of USAGI, leading to a WNW to NW track. Some numerical models are suggesting a turn back to W at later taus as the influence from the southern extension of the ridge diminishes.

副熱帶高壓脊位置較北，天兔附近的引導氣流較弱。預料天兔將逐漸加速，沿副高南部向西移動。24 至 48 小時後副高將於天兔以東南伸，令風暴轉為向西北偏西或西北移動。部分數值模式預計後期該南部延伸的影響將減低，天兔會回復偏西之路徑。

Current T-number: T3.5/3.5/D1.0/24 HRS
USAGI's convections are consolidating and becoming more symmetrical. As the storm is expected to track across a warm pool of water with decent divergence aloft, it should intensify gradually in the next 72 hours into a significant typhoon.

現時的 T 號碼: T3.5/3.5/D1.0/24 HRS
天兔的對流逐漸整固，結構變得對稱。由於風暴將橫過高海溫的地區且輻散良好，預料它將於未來 72 小時逐漸增強至一成熟颱風。

USAGI's subsidence may produce haze three days later as it nears Luzon Strait.

隨著天兔於三天後靠近呂宋海峽，受其下沉氣流影響香港或會有煙霞。

2013/09/19 (Thu 四), afternoon 下午 (or earlier 或更早)

Tropical disturbance 99W intensified into tropical depression 17W earlier today and was named USAGI. It later intensified into a tropical storm. At 2 pm, USAGI was centred about 1160 km (630 NM) ENE of Manila.

熱帶擾動 99W 今天較早時增強為熱帶低氣壓 17W，被命名為天兔，隨後增強為熱帶風暴。在下午 2 時，天兔集結在馬尼拉東北偏東約 1160 公里 (630 海里)。

USAGI is the 33rd name in the tropical cyclone name list. It was contributed by Japan, meaning the constellation Lepus. This name was used in 2001 and 2007.

天兔為熱帶氣旋名稱列表中第 33 個名字，由日本提供，為一星座名稱。此名曾於 2001 及 2007 年使用。

The subtropical ridge has restrengthened following the departure of MAN-YI. Under its influence USAGI should track W in the next 24 hours. Thereafter the ridge is expected to extend south at east of USAGI, leading to a WNW to NW track.

萬宜遠去後副熱帶高壓脊已再度增強，在其影響下預料天兔會於未來 24 小時西移。此後副熱帶高壓脊將於天兔以東南伸，導致風暴轉為向西北偏西或西北移動。

Current T-number: T2.5/2.5/INT OBS
Convections are relatively sparse in USAGI's northern semicircle. As the storm is expected to track across a warm pool of water with decent divergence aloft, it should intensify gradually in the next 72 hours.

現時的 T 號碼: T2.5/2.5/INT OBS
天兔北半圓環流較少。由於風暴將橫過高海溫的地區且輻散良好，預料它將於未來 72 小時逐漸增強。

USAGI's subsidence may produce haze three days later as it nears Luzon Strait.

隨著天兔於三天後靠近呂宋海峽，受其下沉氣流影響香港或會有煙霞。

2013/09/18 (Wed 三), afternoon 下午 (or earlier 或更早)