NEOGURI has made landfall at western Guangdong near 15 HKT today, and it necessitated the Number 8 (SE) Gale or Storm Wind Signal in Macau and the earliest Black Rainstorm Warning Signal in 16 years in Hong Kong. It has then weakened into a tropical storm. At 20 HKT, NEOGURI was centred about 130 km (70 NM) WNW of the Hong Kong Observatory.
Northern South China Sea, Southern Guangdong 南海北部及廣東南部
Forecast Track 預測路徑圖
Overview 總覽
Other images 其他圖像
JTWC Track 聯合颱風警報中心路徑圖
JMA Track 日本氣象聽路徑圖
HKO Satellite 香港天文台衛星圖
NEOGURI has recurved into a NNE direction. At 14 HKT, NEOGURI was centred about 250 km (130 NM) WSW of Hong Kong. The Observatory has issued the Strong Wind Signal Number 3 at 20:40 HKT on 18th April.
NEOGURI will travel NE to NNE along the northwestern periphery of the subtropical ridge in the remainder of the forecast period.
預料浣熊將於餘下時間沿副熱帶高壓脊西北部向東北至東北偏北移動,趨向華南沿岸。
Intensity Analysis 強度分析
Current T-number: T3.5/4.0/W1.0/24 HRS
NEOGURI is forecast to weaken rapidly as a result of lack of moisture from the ocean, higher vertical wind shear and land interaction.
現時的 T 號碼: T3.5/4.0/W1.0/24 HRS 預料浣熊將由於缺乏由海洋提供的水氣、垂直風切變增強及陸地影響而急速減弱。
Effects on Hong Kong 對香港的影響
NEOGURI will bring heavy rain, strong winds and rough seas to Hong Kong and adjacent areas from today to Monday. Obtain information related to NEOGURI regularly to ensure safety. Also notice that NEOGURI may be very close to Hong Kong on Sunday (although weakened).
Northern South China Sea, Hainan Island, Southern Guangdong 南海北部、海南島及廣東南部
Forecast Track 預測路徑圖
Overview 總覽
Other images 其他圖像
JTWC Track 聯合颱風警報中心路徑圖
JMA Track 日本氣象聽路徑圖
HKO Satellite 香港天文台衛星圖
NEOGURI has been moving N in the past 12 hours. At 20 HKT, NEOGURI was centred about 460 km (250 NM) SW of Hong Kong. The Observatory has issued the Strong Wind Signal Number 3 at 20:40 HKT on 18th April.
NEOGURI is reaching the NW edge of the subtropical ridge, and a turn to NNE / NE may be observed in the next 24 hours. As seen from steering charts, as NEOGURI weakens, it will turn into a more northeasterly direction as it is subject to steering from lower and lower levels.
Current T-number: T4.5/5.0/W0.5/24 HRS
NEOGURI is forecast to weaken slightly before making landfall at western Guangdong, after which It will weaken rapidly as a result of lack of moisture from the ocean, higher vertical wind shear and land interaction.
現時的 T 號碼: T4.5/5.0/W0.5/24 HRS 預料浣熊將在登陸廣東西部沿岸前稍微減弱,隨後將由於缺乏由海洋提供的水氣、垂直風切變增強及陸地影響而急速減弱。
Effects on Hong Kong 對香港的影響
NEOGURI will bring heavy rain, strong winds and rough seas to Hong Kong and adjacent areas from today to Monday. Obtain information related to NEOGURI regularly to ensure safety. Also notice that NEOGURI may be very close to Hong Kong on Sunday (although weakened).
Northern South China Sea, Hainan Island, Southern Guangdong 南海北部、海南島及廣東南部
Forecast Track 預測路徑圖
Overview 總覽
Other images 其他圖像
JTWC Track 聯合颱風警報中心路徑圖
JMA Track 日本氣象聽路徑圖
HKO Satellite 香港天文台衛星圖
NEOGURI continued to move NNW in the past 12 hours, maintaining intensity in the meantime. At 08 HKT, NEOGURI was centred about 550 km (300 NM) SSW of Hong Kong. The Observatory has issued the Standby Signal Number 1 at 16:15 HKT on 17th April.
The NW edge of the subtropical ridge retreated a bit last night. NEOGURI is expected to recurve after crossing the ridge axis and move in a NNE direction near landfall.
Current T-number: T5.0/5.0/S0.0/24 HRS
The arriving weak northeast monsoon allowed NEOGURI's outflow channel to improve and thus maintaining intensity in the past 12 hours. The system's intensity should have peaked by now and it is forecast to weaken slightly before skirting the eastern coast of Hainan, after which It will weaken rapidly as a result of lower sea temperatures, higher vertical wind shear and land interaction.
現時的 T 號碼: T5.0/5.0/S0.0/24 HRS
一股微弱東北季候風為浣熊提供良好的輻散通道,令其於過去 12 小時維持強度。浣熊已到達巔峰強度,預料它將在橫過海南以東海域前稍微減弱,隨後將由於海水溫度逐漸減低、垂直風切變增強及陸地影響而急速減弱。
Effects on Hong Kong 對香港的影響
NEOGURI may bring heavy rain, strong winds and rough seas to Hong Kong and adjacent areas from later today to Monday. Obtain information related to NEOGURI regularly to ensure safety.
Northern South China Sea, Hainan Island, Southern Guangdong 南海北部、海南島及廣東南部
Forecast Track 預測路徑圖
Overview 總覽
Other images 其他圖像
JTWC Track 聯合颱風警報中心路徑圖
JMA Track 日本氣象聽路徑圖
HKO Satellite 香港天文台衛星圖
NEOGURI maintained intensity in the past 6 hours. At 20 HKT, NEOGURI was centred about 680 km (370 NM) SSW of Hong Kong. The Observatory has issued the Standby Signal Number 1 at 16:15 HKT.
NEOGURI has been moving N in the past six hours. It is expected to recurve after crossing the ridge axis and move in a NE direction near landfall.
浣熊於過去 6 小時向偏北方向移動。預料當浣熊橫過脊線後將會沿副熱帶高壓脊西北部轉向東北加速移動。
Intensity Analysis 強度分析
Current T-number: T4.5/5.0/D1.0/24 HRS [W0.5/06 HRS]
NEOGURI has been intensifying slightly in the past 24 hours due to enhanced outflow channels brought by the arriving westerly trough. The system's intensity should have peaked by now and it is forecast to weaken slightly before making landfall at eastern Hainan, after which It will weaken rapidly as a result of lower sea temperatures, higher vertical wind shear and land interaction.
現時的 T 號碼: T4.5/5.0/D1.0/24 HRS [W0.5/06 HRS]
西風槽繼續為浣熊提供良好的輻散通道,令該系統於過去 24 小時繼續增強。浣熊已到達巔峰強度,預料它將在登陸海南東部前稍微減弱,隨後將由於海水溫度逐漸減低、垂直風切變增強及陸地影響而急速減弱。
Effects on Hong Kong 對香港的影響
NEOGURI may bring heavy rain, strong winds and rough seas to Hong Kong and adjacent areas from tomorrow to Monday. Obtain information related to NEOGURI regularly to ensure safety.
Northern South China Sea, Hainan Island, Western Guangdong 南海北部、海南島及廣東西部
Forecast Track 預測路徑圖
Overview 總覽
Other images 其他圖像
JTWC Track 聯合颱風警報中心路徑圖
JMA Track 日本氣象聽路徑圖
HKO Satellite 香港天文台衛星圖
NEOGURI has intensified further in the last 24 hours and has started a more northerly track. At 14 HKT, NEOGURI was centred about 750 km (410 NM) SSW of Hong Kong. The Observatory has issued the Standby Signal Number 1 at 16:15 HKT.
NEOGURI has turned poleward last night, followed by a NNW track. NEOGURI is expected to recurve after crossing the ridge axis and move in a NE direction near landfall.
浣熊昨晚轉向偏北方向移動,而當浣熊橫過脊線後將會沿副熱帶高壓脊西北部轉向東北加速移動。
Intensity Analysis 強度分析
Current T-number: T5.0/5.0/D1.0/24 HRS
NEOGURI has been intensifying slightly in the past 24 hours due to enhanced outflow channels brought by the arriving westerly trough. The system's intensity should have peaked by now and it is forecast to weaken slightly before making landfall at eastern Hainan, after which It will weaken rapidly as a result of lower sea temperatures, higher vertical wind shear and land interaction.
現時的 T 號碼: T5.0/5.0/D1.0/24 HRS
西風槽繼續為浣熊提供良好的輻散通道,令該系統於過去 24 小時繼續增強。浣熊已到達巔峰強度,預料它將在登陸海南東部前稍微減弱,隨後將由於海水溫度逐漸減低、垂直風切變增強及陸地影響而急速減弱。
Effects on Hong Kong 對香港的影響
NEOGURI may bring heavy rain, strong winds and rough seas to Hong Kong and adjacent areas from tomorrow to Monday. Obtain information related to NEOGURI regularly to ensure safety.
NEOGURI has intensified rapidly in the last 24 hours, attaining typhoon status today afternoon. At 14 HKT, NEOGURI was centred about 380 km (200 NM) S of Xisha.
A weakness induced by the arriving trough is clearly visible in the subtropical ridge ENE of NEOGURI, suggesting a turn to the NW/NNW is imminent. As the ridge axis is situated at about 18N, NEOGURI is expected to recurve and move in a NE direction when it approaches northern South China Sea.
Current T-number: T4.0/4.5/D1.5/24 HRS
NEOGURI has been intensifying at above climatological rate in the past 24 hours due to enhanced outflow channels brought by the arriving westerly trough. The system is forecast to intensify further under favorable environments before reaching 19N, after which It will weaken as a result of lower sea temperatures, higher vertical wind shear and land interaction.
現時的 T 號碼: T4.0/4.5/D1.5/24 HRS
剛到來的西風槽為浣熊提供更佳的輻散通道,令該系統於過去 24 小時急劇增強。預料浣熊能於良好環境下繼續增強,但當浣熊到達北緯 19 度時將由於海水溫度逐漸減低、垂直風切變增強及陸地影響而減弱。
Effects on Hong Kong 對香港的影響
The outer rainbands of NEOGURI may bring heavy rain to Hong Kong and adjacent areas in 3 days.
浣熊的外圍雨帶將於三天後為香港及鄰近地區帶來大雨。
Next Update 下次更新
19 HKT, 2008/04/17 (or earlier 或更早)
Probabilities of TC Signals from HKO 香港天文台(已)發出熱帶氣旋警告信號的機率
Signal 信號
t+12
t+24
t+36
t+48
t+72
Standby 戒備 #1
Low 低
Low 低
Medium 中等
Strong Wind 強風 #3
Low 低
Gale/Storm 烈暴風 #8
G/S Incr. 烈暴增強 #9
Hurricane 颶風 #10
Notes 註:
1) "Signal" represents having issued that signal or above. "信號" 指該信號或更高。
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% 的概率; "中等" = 20 - 50%; "高" = 50 - 80%; "極高" = 80% 或以上。
Subject to the subtropical ridge NNE of NEOGURI, it has been moving WNW in the past 24 hours. The ridge has shown signs of retreat in the past 24 hours, and major models predict that this ridge will retreat further after t+24, allowing NEOGURI to turn poleward. The storm has also been moving slower at 10 knots in the past 24 hours. As the ridge axis is situated at about 19N, NEOGURI is expected to recurve and move in a NE direction when it approaches northern South China Sea. It should be noted that where the storm starts to recurve and the intensity it can gain play a considerable role in determining the affected area. At present, ECMWF forecasts a landfall at Pearl River Estuary in 120 hours while NOGAPS puts the storm towards the Gulf of Tonkin. GFS is somewhere in between --- making first landfall at Hainan and then recurving NE towards Pearl River Estuary. Therefore major models still differ significantly in terms of future track and landfall.
Current T-number: T3.0/3.0/D0.5/24 HRS
At present, the sea surface temperature at central South China Sea is about 28 degrees. Coupled with low to moderate vertical wind shear, NEOGURI is expected to intensify into a typhoon when it traverses South China Sea. It will weaken as a result of lower sea temperatures and higher wind shear as it moves north of 18 - 20 degrees north.
現時的 T 號碼: T3.0/3.0/D0.5/24 HRS
現時南海中部海水溫度約28度,且垂直風切變中等,預料浣熊可以於該環境中增強至颱風強度。隨後由於海水溫度逐漸減低及垂直風切變增強,浣熊將會減弱直至登陸。
Effects on Hong Kong 對香港的影響
No threat to Hong Kong is expected within the next 72 hours. However, extended period forecasts call for landfall in the vicinity of Hong Kong adjacent waters, which should be noticed if one engages in water activities.
JTWC has upgraded 99W into a tropical depression, and was given a temporary number 02W. 02W has intensified into a tropical storm at 20 HKT on the same day. At 20 HKT, 02W was centred about 1110 km (600 NM) SE of Xisha.
Subject to the subtropical ridge north of 02W, it has been moving W in the past 24 hours. Major models predict that this ridge will retreat gradually after t+48 to t+72, allowing 02W to turn poleward. The additional easterly airstream is causing 02W to move faster at the time being, and this situation is expected to cease after t+24 to t+48 when the system turns poleward. As the ridge axis is situated at about 20N, 02W is expected to recurve and move in a NE direction when it approaches northern South China Sea. It should be noted that where the storm starts to recurve and the intensity it can gain play a considerable role in determining the affected area. At present, ECMWF forecasts a landfall at Shantou in 144 hours and NOGAPS favours a more western landfall (at Hainan).
Current T-number: T2.5/2.5/INT OBS
At present, the sea surface temperature at central South China Sea is about 28 degrees. Coupled with low to moderate vertical wind shear, 02W is expected to intensify into a typhoon when it traverses South China Sea. It will weaken as a result of lower sea temperatures and higher wind shear as it moves north of 18 - 20 degrees north.
現時的 T 號碼: T2.5/2.5/INT OBS
現時南海中部海水溫度約28度,且垂直風切變中等,預料 02W 可以於該環境中增強至颱風強度。隨後由於海水溫度逐漸減低及垂直風切變增強,02W 將會減弱直至登陸。
Effects on Hong Kong 對香港的影響
No threat to Hong Kong is expected within the next 72 hours. However, extended period forecasts call for landfall in the vicinity of Hong Kong adjacent waters, which should be noticed if one engages in water activities.