BANYAN has decelerated significantly. At 20 HKT, BANYAN was centred about 500 km (270 NM) SE of Hong Kong.
榕樹明顯減慢。在下午 8 時，榕樹集結在香港東南約 500 公里 (270
海里)。
TC
Naming 氣旋命名
BANYAN is the 130th name in the tropical cyclone name list. It was contributed by Hong Kong. This name was last used in 2005.
榕樹為熱帶氣旋名稱列表中第 130 個名字，由香港提供。這個名稱曾於 2005 年使用。
Movement
Analysis 路徑分析
BANYAN is expected to be slow moving in a generally weak steering environment.
榕樹將於弱駛流環境中緩慢移動。
Intensity
Analysis 強度分析
Current T-number: T1.0/1.5/S0.0/12 HRS
BANYAN's low-level circulation is fully exposed and lacks organization. The storm is expected to dissipate over water soon.
現時的 T 號碼: T1.0/1.5/S0.0/12 HRS
榕樹的低層環流中心完全外露，且缺乏組織。預料榕樹即將於海上消散。
Effects on
Hong Kong 對香港的影響
No threat to Hong Kong is expected within the next 72 hours.
榕樹於未來的 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 BANYAN.
這是本站對榕樹的最後一次發佈。
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)
BANYAN is the 130th name in the tropical cyclone name list. It was contributed by Hong Kong. This name was last used in 2005.
榕樹為熱帶氣旋名稱列表中第 130 個名字，由香港提供。這個名稱曾於 2005 年使用。
Movement
Analysis 路徑分析
The subtropical ridge has re-oriented, allowing BANYAN to move N in the past 24 hours. Steering is expected to diminish in the next 12 to 24 hours and BANYAN will remain quasi-stationary. A ridge will build in southern China. Together with the oncoming northeast monsoon, BANYAN should turn SW later on.
Current T-number: T1.0/1.5/W0.5/24 HRS
BANYAN has lost most of its deep convections and it is difficult to locate its centre even with the help of WINDSAT wind field image. The storm might be able to strengthen slightly in decent sea temperatures and low to moderate shear, but later on it will move to a cooler area that will weaken the system. Dissipation over water is possible.
現時的 T 號碼: T1.0/1.5/W0.5/24 HRS
榕樹失去大多數深層對流，即使有 WINDSAT 風場圖協助仍然較難對其作出定位。榕樹或能於海溫尚可和低至中等風切環境下稍為增強，但它將於較後時間移進冷水區而減弱，並有機會在海上消散。
Effects on
Hong Kong 對香港的影響
BANYAN may enhance the northeast monsoon that is expected to arrive in the next 24 to 48 hours by increasing the pressure gradient.
榕樹可能令氣壓梯度增加，使未來一兩天到達之東北季候風加強。
Next Update
下次更新
00 HKT, 2011/10/16 (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
As BANYAN remains weaker than expected, the Observatory may consider issuing the Strong Monsoon Signal later when the monsoon arrives.
由於榕樹比預期弱，天文台或會在東北季候風到達後發出強烈季候風信號。
Signal 信號
t+12
t+24
t+36
t+48
t+60
t+72
Standby 戒備 #1
Low 低
Low 低
Low 低
Low 低
Strong Wind 強風 #3
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。
BANYAN has weakened slightly. At 20 HKT, BANYAN was centred about 320 km (180 NM) W of Manila.
榕樹稍為減弱。在下午 8 時，榕樹集結在馬尼拉以西約 320 公里 (180
海里)。
TC
Naming 氣旋命名
BANYAN is the 130th name in the tropical cyclone name list. It was contributed by Hong Kong. This name was last used in 2005.
榕樹為熱帶氣旋名稱列表中第 130 個名字，由香港提供。這個名稱曾於 2005 年使用。
Movement
Analysis 路徑分析
BANYAN is travelling NW in the southwestern periphery of the subtropical ridge. It is expected to make a turn to the west as the northeast monsoon arrives this weekend and that a low-level ridge will build over southern China.
Current T-number: T1.5/2.0/W0.5/24 HRS
As BANYAN reaches the South China Sea, it will pick up strength slowly in acceptable atmospheric environments. However, as the storm moves west it will encounter appreciably cooler water which will lead to its weakening.
現時的 T 號碼: T1.5/2.0/W0.5/24 HRS
南海中部大氣環境尚可接受，預料榕樹可以稍為增強。但隨著榕樹西移，該區海溫較低，預料榕樹將於此環境下開始減弱。
Effects on
Hong Kong 對香港的影響
As BANYAN travels north, it may enhance the northeast monsoon that is expected to arrive near the weekend by increasing the pressure gradient.
隨著榕樹北移，它可能令氣壓梯度增加，使周末前後到達之東北季候風加強。
Next Update
下次更新
00 HKT, 2011/10/15 (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
Signal 信號
t+12
t+24
t+36
t+48
t+60
t+72
Standby 戒備 #1
Low 低
Medium 中等
Medium 中等
Low 低
Low 低
Strong Wind 強風 #3
Low 低
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。
BANYAN is now traversing central Philippines. At 20 HKT, BANYAN was centred about 280 km (150 NM) SSE of Manila.
榕樹正橫過菲律賓中部。在下午 8 時，榕樹集結在馬尼拉東南偏南約 280 公里 (150
海里)。
TC
Naming 氣旋命名
BANYAN is the 130th name in the tropical cyclone name list. It was contributed by Hong Kong. This name was last used in 2005.
榕樹為熱帶氣旋名稱列表中第 130 個名字，由香港提供。這個名稱曾於 2005 年使用。
Movement
Analysis 路徑分析
BANYAN is travelling WNW in the south to southwestern periphery of the subtropical ridge. As the ridge reorientates BANYAN is expected to move NW in the next 36 hours. Models diverge on subsequent movement with some tracking the storm further north, some rendering the storm motionless while others push the storm westward due to an arriving northeast monsoon and the rebuilding of the ridge. The current bulletin still favours the final scenario.
Current T-number: T2.0/2.5/W0.5/24 HRS
Due to land interaction and moderate to high shear, BANYAN has been struggling to intensify. BANYAN is expected to strengthen slightly after it enters the South China Sea, but strong intensification is not expected as conditions at South China Sea remain marginal.
現時的 T 號碼: T2.0/2.5/W0.5/24 HRS
受陸地和偏高垂直風切變影響，榕樹未能增強。預料榕樹將能在進入南海後稍為增強，但由於南海大氣環境仍未如理想，增強速度將受限制。
Effects on
Hong Kong 對香港的影響
As BANYAN travels north, it may enhance the northeast monsoon that is expected to arrive near the weekend by increasing the pressure gradient.
隨著榕樹北移，它可能令氣壓梯度增加，使周末前後到達之東北季候風加強。
Next Update
下次更新
23 HKT, 2011/10/13 (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
Low 低
Low 低
Low 低
Strong Wind 強風 #3
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。
BANYAN is the 130th name in the tropical cyclone name list. It was contributed by Hong Kong. This name was last used in 2005.
榕樹為熱帶氣旋名稱列表中第 130 個名字，由香港提供。這個名稱曾於 2005 年使用。
Movement
Analysis 路徑分析
BANYAN is expected to turn NW along the southwestern edge of the subtropical ridge that is expected to weaken soon. As BANYAN reaches higher latitudes, it will encounter a surge of northeast monsoon that may push it westward.
Current T-number: T2.5/2.5/D0.5/24 HRS
BANYAN's spiraling structures have become more apparent, although the storm is still lacking organization. Intensification is expected to halt as BANYAN crosses the Philippine islands and travels in an area of elevated shear. Slight intensification is possible as it enters South China Sea, but sea temperatures at the western part of the Sea is way lower than the level necessary to sustain a tropical cyclone.
現時的 T 號碼: T2.5/2.5/D0.5/24 HRS
榕樹的旋轉性漸趨明顯，但仍然缺乏組織。榕樹即將開始橫過菲律賓中南部諸島，該區的垂直風切變亦較高，預料榕樹將停止增強，直至進入南海。可是，南海西部現時溫度頗低，未能提供熱帶氣旋所需能量。
Effects on
Hong Kong 對香港的影響
No threat to Hong Kong is expected within the next 72 hours.
榕樹於未來的 72 小時將不會對香港構成任何影響。
Next Update
下次更新
23 HKT, 2011/10/12 (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
23W is moving W along the southern periphery of the subtropical ridge. A midlatitude trough is expected to weaken the ridge mid-week this week, allowing 23W to turn poleward gradually.
Current T-number: T2.0/2.0/INT OBS
23W is developing in a region with rather high sea temperatures and low shear. It is expected to strengthen in the next 24 hours, but travelling across the Philippine islands will probably affect its development.
Active Tropical Cyclone(s) 正活躍之熱帶氣旋
