WASHI has weakened into a tropical depression. At 20 HKT, WASHI was centred about 500 km (270 NM) E of Ho Chi Minh City.
天鷹已減弱為熱帶低氣壓。在下午 8 時，天鷹集結在胡志明市以東約 500 公里 (270
海里)。
TC
Naming 氣旋命名
WASHI is the 131st name in the tropical cyclone name list. It was contributed by Japan, meaning the constellation Aquila. This name was last used in 2005.
天鷹為熱帶氣旋名稱列表中第 131 個名字，由日本提供，為一星座。這個名稱曾於 2005 年使用。
Movement
Analysis 路徑分析
WASHI is expected to move W or WSW along the easterly airstream south of the subtropical ridge.
天鷹將沿副熱帶高壓脊南部的偏東氣流向西或西南偏西移動。
Intensity
Analysis 強度分析
Current T-number: T1.0/1.5/D2.0/24 HRS
WASHI weakened rapidly under the combined effect of the northeast monsoon and cool sea surface temperatures. The storm is expected to dissipate in 12 hours.
現時的 T 號碼: T1.0/1.5/D2.0/24 HRS
受東北季候風和低海面溫度影響，天鷹急劇減弱。預料在惡劣環境下天鷹將於 12 小時內消散。
Effects on
Hong Kong 對香港的影響
No threat to Hong Kong is expected within the next 72 hours.
天鷹於未來的 72 小時將不會對香港構成任何影響。
Next Update
下次更新
This is the final bulletin on WASHI.
這是本站對天鷹的最後一次發佈。
Other Images
其他圖像
JTWC Track 聯合颱風警報中心路徑圖
JMA Track 日本氣象廳路徑圖
HKO Satellite 香港天文台衛星圖
HKO Track 香港天文台路徑圖
Probabilities
of TC Signals from HKO 香港天文台 (已) 發出 / 取消熱帶氣旋警告信號的機率
N/A 不適用
Past Bulletins (click on the bulletin no. for the contents) 過往報告
(請按發佈編號顯示內容)
WASHI is the 131st name in the tropical cyclone name list. It was contributed by Japan, meaning the constellation Aquila. This name was last used in 2005.
天鷹為熱帶氣旋名稱列表中第 131 個名字，由日本提供，為一星座。這個名稱曾於 2005 年使用。
Movement
Analysis 路徑分析
WASHI is moving west in the southern periphery of the subtropical ridge. As the storm moves further west, it will be under the influence of a high pressure near Hainan as well as the northeast monsoon which will cause the storm to move WSW or SW.
Current T-number: T3.0/3.0/D0.5/24 HRS
After WASHI entered sea it intensified slightly. Seas to the west of WASHI are much cooler (around 25 degrees) and shear is at moderate to high level; both factors will weaken the system significantly starting from t+24. Dissipation is expected in 72 hours.
WASHI is the 131st name in the tropical cyclone name list. It was contributed by Japan, meaning the constellation Aquila. This name was last used in 2005.
天鷹為熱帶氣旋名稱列表中第 131 個名字，由日本提供，為一星座。這個名稱曾於 2005 年使用。
Movement
Analysis 路徑分析
WASHI's northward track component will diminish as it enters South China Sea and is subject to the effect of the northeast monsoon. Under its influence WASHI will gradually track WSW towards southern Thailand and Malaysia.
Current T-number: T2.5/3.0/W0.5/24 HRS
WASHI's structure deteriorated as it passed through landmass earlier. The storm is expected to intensify slightly as it re-enters sea, but seas are much cooler in the western part of the South China Sea, which, together with the entrainment of dry and cool air from the northeast monsoon, will weaken WASHI after t+48. WASHI is likely to dissipate as it nears Malay Peninsula.
現時的 T 號碼: T2.5/3.0/W0.5/24 HRS
天鷹早前登陸令組織受破壞。天鷹再度進入海洋能令其增強少許，但南海西部海溫明顯較低，同時由於季風南下將令天鷹捲入乾冷空氣，預料天鷹將於 48 小時後開始逐步減弱，在靠近馬來半島時消散。
Effects on
Hong Kong 對香港的影響
No threat to Hong Kong is expected within the next 72 hours.
天鷹於未來的 72 小時將不會對香港構成任何影響。
Next Update
下次更新
About 約 23 HKT, 2011/12/18 (Sun 日) or earlier 或更早
Other Images
其他圖像
JTWC Track 聯合颱風警報中心路徑圖
JMA Track 日本氣象廳路徑圖
HKO Satellite 香港天文台衛星圖
HKO Track 香港天文台路徑圖
Probabilities
of TC Signals from HKO 香港天文台 (已) 發出 / 取消熱帶氣旋警告信號的機率
WASHI is the 131st name in the tropical cyclone name list. It was contributed by Japan, meaning the constellation Aquila. This name was last used in 2005.
天鷹為熱帶氣旋名稱列表中第 131 個名字，由日本提供，為一星座。這個名稱曾於 2005 年使用。
Movement
Analysis 路徑分析
The subtropical ridge has strengthened slightly and is keeping WASHI at a low latitude. The storm is expected to move west as it enters South China Sea, while a WSW movement is expected later due to the arriving monsoon.
Current T-number: N/A
WASHI is now crossing southern Philippines and is expected to weaken slightly. It should regain some intensity as it enters South China Sea, but lower sea temperatures and injection of cool, dry air from the monsoon is likely to cause the storm to weaken rapidly as it moves to the western part of the Sea.
現時的 T 號碼: 不適用
天鷹正橫過菲律賓南部，預料會稍為減弱。隨著天鷹再度進入洋面，它將可再次增強，但由於南海海溫較低且東北季候風將帶來乾冷空氣，預料天鷹將於南海西部開始快速減弱。
Effects on
Hong Kong 對香港的影響
No threat to Hong Kong is expected within the next 72 hours.
天鷹於未來的 72 小時將不會對香港構成任何影響。
Next Update
下次更新
About 約 23 HKT, 2011/12/17 (Sat 六) or earlier 或更早
Other Images
其他圖像
JTWC Track 聯合颱風警報中心路徑圖
JMA Track 日本氣象廳路徑圖
HKO Satellite 香港天文台衛星圖
HKO Track 香港天文台路徑圖
Probabilities
of TC Signals from HKO 香港天文台 (已) 發出 / 取消熱帶氣旋警告信號的機率
WASHI is the 131st name in the tropical cyclone name list. It was contributed by Japan, meaning the constellation Aquila. This name was last used in 2005.
天鷹為熱帶氣旋名稱列表中第 131 個名字，由日本提供，為一星座。這個名稱曾於 2005 年使用。
Movement
Analysis 路徑分析
WASHI continues to move WNW quickly along the southern periphery of the subtropical ridge that is weaker on its western side. WASHI is expected to travel WNW towards southern Philippines, and gradually turn to W or even WSW under the influence of an arriving monsoon.
Current T-number: T3.0/3.0/D0.5/24 HRS
WASHI's spiraling structures improved in the past 24 hours. The storm is expected to intensify in warm seas as it moves towards the Philippines, but will start to weaken in South China Sea as it interacts with the monsoon and that sea temperatures in SCS are lower.
現時的 T 號碼: T3.0/3.0/D0.5/24 HRS
天鷹的螺旋性於過去 24 小時轉好。預料天鷹將於溫暖的海水中繼續增強，直至登陸菲律賓。隨後天鷹將受季風和較冷海水的影響而於南海中減弱。
Effects on
Hong Kong 對香港的影響
No threat to Hong Kong is expected within the next 72 hours.
天鷹於未來的 72 小時將不會對香港構成任何影響。
Next Update
下次更新
About 約 23 HKT, 2011/12/16 (Fri 五) or earlier 或更早
Other Images
其他圖像
JTWC Track 聯合颱風警報中心路徑圖
JMA Track 日本氣象廳路徑圖
HKO Satellite 香港天文台衛星圖
HKO Track 香港天文台路徑圖
Probabilities
of TC Signals from HKO 香港天文台 (已) 發出 / 取消熱帶氣旋警告信號的機率
The subtropical ridge north of 27W is steering the storm towards the west quickly. 27W is expected to move WNW since the ridge appears weaker in its western periphery that allows room for slight poleward track component. The storm will move west again after crossing the Philippines, as the continental ridge over China builds.
Current T-number: T2.5/2.5/D0.5/24 HRS
27W is still lacking structure and it will take some time for the storm to consolidate. Environmental conditions ahead of the storm are expected to be good (decent sea temperatures with low shear) and the storm should be able to strengthen in the next 48 hours. 27W is expected to maintain strength or weaken slightly as it crosses the Philippines, and start to weaken when it reaches South China Sea as an intense northeast monsoon is expected to propagate southward in the Sea later this week.
A broad subtropical ridge is firmly established to the north of 27W. Under its influence, the storm is expected to advance westward rapidly in the next 48 hours.
一道廣闊的高壓脊於 27W 以北建立。受其影響 27W 將於未來 48 小時快速向西推進。
Intensity
Analysis 強度分析
Current T-number: T2.0/2.0/INT OBS
27W is in an area of good divergence, and the storm is expected to travel through very warm waters (in excess of 28 degrees) in the next 72 hours. Steady intensification is expected before the storm reaches southern Philippines.
Active Tropical Cyclone(s) 正活躍之熱帶氣旋
