NOCK-TEN has made landfall at Hainan Island. At 20 HKT, NOCK-TEN was centred about 510 km (270 NM) WSW of Hong Kong. The Strong Wind Signal was replaced by the Standby Signal at 14:10 HKT, which was cancelled at 16:40 HKT.
NOCK-TEN is the 118th name in the tropical cyclone name list. It was contributed by Laos, meaning bird. This name was last used in 2004.
洛坦為熱帶氣旋名稱列表中第 118 個名字，由老撾提供，意思為鳥。這個名稱曾於 2004 年使用。
Movement
Analysis 路徑分析
NOCK-TEN will continue to be steered by a ridge in China towards the west into the Gulf of Tonkin.
在中國之高壓脊將使洛坦向西移動，趨向北部灣。
Intensity
Analysis 強度分析
Current T-number: T3.0/3.5/W0.5/24 HRS
NOCK-TEN failed to intensify before landfall, remaining as a severe tropical storm. Land interaction will limit NOCK-TEN's strength, and it is expected to maintain intensity while crossing the Gulf of Tonkin. Rapid weakening follows as it makes its final landfall in northern Vietnam.
現時的 T 號碼: T3.0/3.5/W0.5/24 HRS
洛坦未能於登陸前增強。由於洛坦靠近陸地，預料它將不會大幅增強，並於橫過北部灣時維持強度。當洛坦在越南北部登陸，它將急速減弱。
Effects on
Hong Kong 對香港的影響
Unstable weather associated with NOCK-TEN will continue to affect Hong Kong on Saturday.
與洛坦相關連之不穩定天氣將於周六繼續影響本港。
Next Update
下次更新
23 HKT, 2011/07/30 (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
NOCK-TEN turned west and accelerated last night. At 20 HKT, NOCK-TEN was centred about 450 km (240 NM) S of Hong Kong. The Standby Signal was issued at 08:40 HKT and was replaced by the Strong Wind Signal at 18:45 HKT.
NOCK-TEN is the 118th name in the tropical cyclone name list. It was contributed by Laos, meaning bird. This name was last used in 2004.
洛坦為熱帶氣旋名稱列表中第 118 個名字，由老撾提供，意思為鳥。這個名稱曾於 2004 年使用。
Movement
Analysis 路徑分析
NOCK-TEN is now in the southern periphery of a western extension of the subtropical ridge. Under its influence NOCK-TEN is expected to travel W to WNW towards Hainan Island.
洛坦現處於副熱帶高壓脊西部延伸之南端，預料向西或西北偏西移動，趨向海南島。
Intensity
Analysis 強度分析
Current T-number: T3.5/3.5/D0.5/24 HRS
NOCK-TEN's structure was damaged as it crossed land yesterday. Spiraling features become more prominent tonight. NOCK-TEN is expected to intensify until it makes landfall at Hainan Island.
現時的 T 號碼: T3.5/3.5/D0.5/24 HRS
洛坦昨天橫過陸地，結構受到破壞，但今天晚間旋捲性增加。預料洛坦將增強，直至登陸海南島。
Effects on
Hong Kong 對香港的影響
Strong easterly winds are now being observed in offshore waters and on high ground. Winds will intensify as NOCK-TEN gathers strength, and wind direction will turn to SE tomorrow. There will also be some squally showers.
本港離岸和高地正吹強東風。預料風勢將增強，並於明天轉吹東南風。香港亦會受狂風驟雨影響。
Next Update
下次更新
23 HKT, 2011/07/29 (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
Signal 信號
t+12
t+24
t+36
t+48
t+60
t+72
Standby 戒備 #1 (Cnl. 取消)
Low 低
High 高
Very High 極高
Very High 極高
Very High 極高
Strong Wind 強風 #3 (Cnl. 取消)
Medium 中等
Very High 極高
Very High 極高
Very High 極高
Very High 極高
Gale/Storm 烈或暴風 #8
G/S Incr. 烈或暴風增強 #9
Hurricane 颶風 #10
Notes 註:
1) For issuance, "Signal" column represents having issued that signal or above. 有關發出機率，首欄指已發出該信號或更高信號。
2) "Low" = Probability from 5 to 20 per cent; "Medium" = 20 to 50%; "High" = 50 to 80%; "V High" = 80% or above.
"低" = 5% - 20% 的機率; "中等" = 20 - 50%; "高" = 50 - 80%; "極高" = 80% 或以上。
NOCK-TEN is the 118th name in the tropical cyclone name list. It was contributed by Laos, meaning bird. This name was last used in 2004.
洛坦為熱帶氣旋名稱列表中第 118 個名字，由老撾提供，意思為鳥。這個名稱曾於 2004 年使用。
Movement
Analysis 路徑分析
The subtropical ridge NE of NOCK-TEN weakens today, allowing the storm to move NW. As NOCK-TEN enters South China Sea it will be steered by the ridge in China, causing the storm to move WNW.
Current T-number: N/A
NOCK-TEN was developing a banding eye as it made landfall. The mountainous Luzon caused it to lose some strength, but banding features are still prominent. As NOCK-TEN enters a pool of warm water, intensification will resume. NOCK-TEN is expected to reach typhoon strength as it crosses the South China Sea.
現時的 T 號碼: 不適用
洛坦登陸前正建立雲捲風眼。登陸呂宋令洛坦稍為減弱，但旋捲性仍非常明顯。洛坦即將再度在溫暖的洋面上經過，預料它將能在橫過南海時增強為颱風。
Effects on
Hong Kong 對香港的影響
Winds will strengthen from the E/NE tomorrow with occasional showers later. Strong winds will prevail on Friday with winds gradually turning to SE.
本港東至東北風將於明天增強，其後會有驟雨。強風將於周五持續，風向逐漸轉為東南。
Next Update
下次更新
23 HKT, 2011/07/28 (Thu 四) 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
Signal 信號
t+12
t+24
t+36
t+48
t+60
t+72
Standby 戒備 #1
High 高
Very High 極高
Very High 極高
Very High 極高
High 高
Medium 中等
Strong Wind 強風 #3
Low 低
Medium 中等
High 高
Medium 中等
Low 低
Gale/Storm 烈或暴風 #8
Low 低
Medium 中等
Low 低
G/S Incr. 烈或暴風增強 #9
Hurricane 颶風 #10
Notes 註:
1) For issuance, "Signal" column represents having issued that signal or above. 有關發出機率，首欄指已發出該信號或更高信號。
2) "Low" = Probability from 5 to 20 per cent; "Medium" = 20 to 50%; "High" = 50 to 80%; "V High" = 80% or above.
"低" = 5% - 20% 的機率; "中等" = 20 - 50%; "高" = 50 - 80%; "極高" = 80% 或以上。
NOCK-TEN is the 118th name in the tropical cyclone name list. It was contributed by Laos, meaning bird. This name was last used in 2004.
洛坦為熱帶氣旋名稱列表中第 118 個名字，由老撾提供，意思為鳥。這個名稱曾於 2004 年使用。
Movement
Analysis 路徑分析
The subtropical ridge is still firmly in place NE of NOCK-TEN. The storm is expected to move NW to WNW in the next 12 to 24 hours along the southwestern periphery of the ridge. As NOCK-TEN enters South China Sea, northward track component will diminish as it will then be steered by the continental ridge.
Current T-number: T3.0/3.0/D1.0/24 HRS
NOCK-TEN's convective bands have tightened over the past 24 hours. It is expected that intensification into a severe tropical storm is likely before first landfall. Intensity should drop as NOCK-TEN crosses the mountainous Luzon, but will increase again once it enters the South China Sea.
現時的 T 號碼: T3.0/3.0/D1.0/24 HRS
洛坦的對流於過去 24 小時變得更為緊密。預料洛坦將於登陸菲律賓前增強為強烈熱帶風暴，但會在橫過菲律賓時減弱，直至重新進入洋面為止。
Effects on
Hong Kong 對香港的影響
According to the present forecast track, winds will strengthen from the east on Thursday to Friday.
按照目前預測路徑，本港風勢 (以東風為主) 將於周四至周五增強。
Next Update
下次更新
23 HKT, 2011/07/27 (Wed 三) 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
Signal 信號
t+12
t+24
t+36
t+48
t+60
t+72
Standby 戒備 #1
Low 低
High 高
Very High 極高
Very High 極高
Strong Wind 強風 #3
Low 低
Medium 中等
High 高
Gale/Storm 烈或暴風 #8
Low 低
G/S Incr. 烈或暴風增強 #9
Hurricane 颶風 #10
Notes 註:
1) For issuance, "Signal" column represents having issued that signal or above. 有關發出機率，首欄指已發出該信號或更高信號。
2) "Low" = Probability from 5 to 20 per cent; "Medium" = 20 to 50%; "High" = 50 to 80%; "V High" = 80% or above.
"低" = 5% - 20% 的機率; "中等" = 20 - 50%; "高" = 50 - 80%; "極高" = 80% 或以上。
Tropical disturbance 93W east of the Philippines has intensified into tropical depression 10W. At 20 HKT, 10W was centred about 530 km (290 NM) E of Manila.
A subtropical ridge is situated NE of 10W. Under its influence 10W will travel NW or WNW towards northern Luzon. As 10W enters South China Sea, it will be steered WNW by the ridge centred in China.
Current T-number: T2.0/2.0/INT OBS
10W's convections are concentrated in its western semicircle. It is expected that 10W will intensify into a tropical storm before landfall under favourable environment. Intensification will cease as it crosses the Philippines, and will resume as it re-enters waters.
現時的 T 號碼: T2.0/2.0/INT OBS
10W 的對流集中在西半圓。預料 10W 將在大致良好的環境下於登陸前增強為熱帶風暴，但在橫過菲律賓時它將停止增強，直至重新進入洋面為止。
Effects on
Hong Kong 對香港的影響
According to the present forecast track, winds will strengthen from the east on Thursday.
按照目前預測路徑，本港風勢 (以東風為主) 將於周四增強。
Next Update
下次更新
23 HKT, 2011/07/26 (Tue 二) 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
Signal 信號
t+12
t+24
t+36
t+48
t+60
t+72
Standby 戒備 #1
Low 低
High 高
Very High 極高
Strong Wind 強風 #3
Low 低
Medium 中等
Gale/Storm 烈或暴風 #8
Low 低
G/S Incr. 烈或暴風增強 #9
Hurricane 颶風 #10
Notes 註:
1) For issuance, "Signal" column represents having issued that signal or above. 有關發出機率，首欄指已發出該信號或更高信號。
2) "Low" = Probability from 5 to 20 per cent; "Medium" = 20 to 50%; "High" = 50 to 80%; "V High" = 80% or above.
"低" = 5% - 20% 的機率; "中等" = 20 - 50%; "高" = 50 - 80%; "極高" = 80% 或以上。
Active Tropical Cyclone(s) 正活躍之熱帶氣旋
