HAIYAN is the 44th name in the tropical cyclone name list. It was contributed by China, meaning petrel. This name was used in 2001 and 2007.
海燕為熱帶氣旋名稱列表中第 44 個名字，由中國提供。此名曾於 2001 及 2007 年使用。
Movement
Analysis 路徑分析
HAIYAN is now situated in the western periphery of the subtropical ridge. The ridge is expected to weaken further, and HAIYAN is expected to turn ENE or even E in its northern periphery.
海燕現處於副熱帶高壓脊西部。預料該脊將繼續減弱，海燕將於副高北面轉向東北偏東甚至偏東移動。
Intensity
Analysis 強度分析
Current T-number 現時的 T 號碼: N/A 不適用
HAIYAN's convections are getting loose as the storm weakens on land. It is expected to degenerate into an area of low pressure in the next 24 hours.
隨著海燕於陸上減弱，其對流逐漸變得鬆散，預料風暴將於未來 24 小時減弱為低壓區。
Effects on
Hong Kong 對香港的影響
Although HAIYAN may come closer to Hong Kong from the west, it will weaken rather rapidly on land and should not pose a significant threat to the territory.
雖然海燕可能由香港西面靠近，但預料它會於陸上快速減弱，對香港沒有明顯威脅。
Next Update
下次更新
This is the final bulletin on HAIYAN.
這是本站對海燕的最後一次發佈。
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)
HAIYAN continued to weaken and has turned NW. At 8 am, HAIYAN was centred about 190 km (100 NM) W of Xisha.
海燕繼續減弱，並轉向西北。在上午 8 時，海燕集結在西沙以西約 190 公里 (100 海里)。
TC
Naming 氣旋命名
HAIYAN is the 44th name in the tropical cyclone name list. It was contributed by China, meaning petrel. This name was used in 2001 and 2007.
海燕為熱帶氣旋名稱列表中第 44 個名字，由中國提供。此名曾於 2001 及 2007 年使用。
Movement
Analysis 路徑分析
HAIYAN is situated at the southwestern edge of the subtroopical ridge and will move NW in the next 24 hours. As the ridge weakens, HAIYAN will decelerate quickly and may recurve at northern Vietnam.
HAIYAN maintains strong convective banding but has lost its eye. The storm is expected to suffer from land interaction and will weaken in the rest of its life. The rate of weakening will increase upon landfall.
The combined influence of the northeast monsoon and HAIYAN is affecting Hong Kong and strong winds or above are being observed in offshore areas and on high ground. This is expected to persist today as HAIYAN crosses the Gulf of Tonkin.
HAIYAN is the 44th name in the tropical cyclone name list. It was contributed by China, meaning petrel. This name was used in 2001 and 2007.
海燕為熱帶氣旋名稱列表中第 44 個名字，由中國提供。此名曾於 2001 及 2007 年使用。
Movement
Analysis 路徑分析
HAIYAN will move increasingly poleward at a slower pace as the subtropical ridge north of the storm is expected to weaken soon.
海燕以北的副熱帶高壓脊即將減弱，預料海燕路徑的偏北分量將有所增加，風暴亦會減速。
Intensity
Analysis 強度分析
Current T-number 現時的 T 號碼: T5.5/6.0/W2.5/27 HRS
HAIYAN weakened significantly after crossing the Philippines, but is still a significant typhoon. Slight intensification is possible before landfall, and after that rapid weakening should take place.
海燕橫過菲律賓後明顯減弱，但仍然是較強的颱風。海燕有機會於登陸前稍為增強，隨後將會快速減弱。
Effects on
Hong Kong 對香港的影響
The combined influence of the northeast monsoon and HAIYAN will result in slightly stronger easterly winds, and the Cuming effect is likely to bring rain to the territory.
東北季候風及海燕的共同影響將令本港東風稍為增強，而奎明效應將為香港帶來雨水。
Next Update
下次更新
2013/11/10 (Sun 日), afternoon 下午 (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 香港天文台發出 / 取消熱帶氣旋警告信號的機率
HAIYAN maintained a perfect central dense overcast and the JTWC assessed it a 170-knot typhoon based on satellite imageries, surpassing the record of 165 knots held by Super Typhoon Tip in 1979. At 5 am, HAIYAN was centred about 670 km (360 NM) SE of Manila.
HAIYAN is the 44th name in the tropical cyclone name list. It was contributed by China, meaning petrel. This name was used in 2001 and 2007.
海燕為熱帶氣旋名稱列表中第 44 個名字，由中國提供。此名曾於 2001 及 2007 年使用。
Movement
Analysis 路徑分析
HAIYAN is situated south of a deep-layered subtropical ridge, and will generally move WNW in the next 3 days. It will move increasingly poleward at a slower pace as the ridge is expected to weaken at later taus.
HAIYAN is one of the strongest systems based on Dvorak technique due to the presence of a thick ring of extremely deep convections with cloud-top temperatures reaching -80 degrees, with a potential of being the strongest on record. The storm is crossing central Philippines; although it is not traversing high mountains substantial intensity loss is expected. HAIYAN will remain as a significant typhoon in the South China Sea until it makes landfall at Vietnam two days later.
As HAIYAN enters the South China Sea, it will enhance the pressure gradient in its northern parts and southern China coastal areas may experience stronger easterly winds this weekend.
隨著海燕進入南海，它將增加南海北部的氣壓梯度，周末期間華南沿岸東風或會增強。
Next Update
下次更新
2013/11/09 (Sat 六), afternoon 下午 (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 香港天文台發出 / 取消熱帶氣旋警告信號的機率
HAIYAN deepened into category 5 and is currently the strongest tropical cyclone this year. At 8 am, HAIYAN was centred about 1440 km (780 NM) ESE of Manila.
HAIYAN is the 44th name in the tropical cyclone name list. It was contributed by China, meaning petrel. This name was used in 2001 and 2007.
海燕為熱帶氣旋名稱列表中第 44 個名字，由中國提供。此名曾於 2001 及 2007 年使用。
Movement
Analysis 路徑分析
HAIYAN is situated south of a deep-layered subtropical ridge, and will generally move WNW in the next 4 days. It will move increasingly poleward at a slower pace as the ridge is expected to weaken at later taus.
HAIYAN is now at its peak intensity as eyewall cloud-top temperatures drop to below -80 degrees with a clear, warm eye. The storm is expected to weaken while crossing the Philippines and when crossing the South China Sea as environmental conditions there cannot support such a strong system.
As HAIYAN enters the South China Sea, it will enhance the pressure gradient in its northern parts and southern China coastal areas may experience stronger easterly winds this weekend.
隨著海燕進入南海，它將增加南海北部的氣壓梯度，周末期間華南沿岸東風或會增強。
Next Update
下次更新
2013/11/08 (Fri 五), afternoon 下午 (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 香港天文台發出 / 取消熱帶氣旋警告信號的機率
HAIYAN is the 44th name in the tropical cyclone name list. It was contributed by China, meaning petrel. This name was used in 2001 and 2007.
海燕為熱帶氣旋名稱列表中第 44 個名字，由中國提供。此名曾於 2001 及 2007 年使用。
Movement
Analysis 路徑分析
HAIYAN is situated south of a deep-layered subtropical ridge, and will generally move WNW in the next 5 days. It will move increasingly poleward as the ridge's western periphery weakens at later taus.
HAIYAN has developed a well-defined central dense overcast and intensification into category 5 is likely. The storm is expected to weaken while crossing the Philippines and when crossing the South China Sea.
海燕發展出成熟的中心密集雲區，有可能進一步增強至五級颱風。預料風暴橫過菲律賓及南海時將會減弱。
Effects on
Hong Kong 對香港的影響
No threat to Hong Kong is expected within the next 72 hours.
預料海燕於未來的 72 小時將不會對香港構成影響。
Next Update
下次更新
2013/11/07 (Thu 四), afternoon 下午 (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 香港天文台發出 / 取消熱帶氣旋警告信號的機率
HAIYAN is the 44th name in the tropical cyclone name list. It was contributed by China, meaning petrel. This name was used in 2001 and 2007.
海燕為熱帶氣旋名稱列表中第 44 個名字，由中國提供。此名曾於 2001 及 2007 年使用。
Movement
Analysis 路徑分析
HAIYAN is situated south of a deep-layered subtropical ridge, and will generally move WNW in the next 5 days.
海燕處於深層副熱帶高壓脊以南，預料會於未來 5 天大致向西北偏西移動。
Intensity
Analysis 強度分析
Current T-number 現時的 T 號碼: T4.0/4.0/D1.5/30 HRS
HAIYAN will track across warm seas with low vertical wind shear, and is expected to intensify gradually into a significant typhoon. The storm is expected to weaken while crossing the Philippines.
海燕將橫過溫暖的海面，加上垂直風切變較低，預料會逐漸增強至一較強颱風，之後將於橫過菲律賓時減弱。
Effects on
Hong Kong 對香港的影響
No threat to Hong Kong is expected within the next 72 hours.
預料海燕於未來的 72 小時將不會對香港構成影響。
Next Update
下次更新
2013/11/06 (Wed 三), afternoon 下午 (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 香港天文台發出 / 取消熱帶氣旋警告信號的機率
Tropical depression 31W formed yesterday. It later intensified into a tropical storm and was named HAIYAN. At 8 am, HAIYAN was centred about 100 km (55 NM) S of Chuuk.
Active Tropical Cyclone(s) 正活躍之熱帶氣旋
