KROSA has weakened into a tropical storm and is moving SW. At 8 am, KROSA was centred about 450 km (240 NM) SSW of Hong Kong. The Standby Signal was cancelled at 10:50 pm last night.
As KROSA weakens, it is affected by low-level northeasterlies and will continue to move SW.
隨著羅莎減弱，它正受低層東北季候風的影響，將繼續向西南移動。
Intensity
Analysis 強度分析
Current T-number 現時的 T 號碼: T2.0/2.5/W1.5/24 HRS
KROSA lost most of its deep convections last night, and only its low-level circulation centre remains. Dry air intrusion will continue to weaken the storm, and dissipation is expected near t+24.
羅莎昨夜失去大部分深層對流，只剩下低層環流中心。乾空氣入侵將令羅莎繼續減弱，於 24 小時後消散。
Effects on
Hong Kong 對香港的影響
No threat to Hong Kong is expected within the next 72 hours.
預料羅莎於未來的 72 小時將不會對香港構成影響。
Next Update
下次更新
This is the final bulletin on KROSA.
這是本站對羅莎的最後一次發佈。
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)
KROSA is now weakening but has remained quasi-stationary in northern South China Sea. At 8 am, KROSA was centred about 230 km (120 NM) SSE of Hong Kong. The Standby Signal is still in force.
KROSA is still situated in a pressure col which provides almost zero net steering. As the storm weakens, it is expected to turn SW under the low-level northeast monsoon and some influence from the western ridge.
羅莎仍處於鞍場中，幾乎沒有動力。隨著風暴減弱，它將受低層東北季候風及西面脊場的影響而向西南移動。
Intensity
Analysis 強度分析
Current T-number 現時的 T 號碼: T3.5/4.0/W1.5/24 HRS
KROSA's structure deteriorated as sea temperatures drop due to the storm being motionless for some time. As drier air intrudes, KROSA will continue to weaken as it turns SW with a chance of dissipating over water.
KROSA is a small system and even though at a distance of less than 250 km its effects to Hong Kong are limited. However, members of the public should stay alert and avoid water sports due to KROSA's proximity.
KROSA intensified into category 2 and has decelerated. At 8 am, KROSA was centred about 340 km (190 NM) SSE of Hong Kong. The #1 Standby Signal was issued at 3:20 pm yesterday.
KROSA is now situated in a pressure col as the subtropical ridge to its north weakens. Track speed is expected to be slow in the next 12 hours. Thereafter, the western ridge will re-intensify and guide the storm towards the SW/WSW.
KROSA's eye enlarged last night and has maintained a tight structure. Some intensification is expected within the next 12 hours, but as the storm turns southwest lower sea temperatures will cause the storm to weaken.
KROSA is expected to be closest to Hong Kong tonight. Under the influence of the northeast monsoon and KROSA, east to northeasterly winds will strengthen and some rain is possible.
預計羅莎將於今晚最接近香港。在東北季候風及風暴的共同影響下，東至東北風將會增強並會有雨。
Next Update
下次更新
2013/11/03 (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
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
High 高
Medium 中等
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。
KROSA crossed the tip of northern Luzon last night and has entered the South China Sea. At 8 am, KROSA was centred about 650 km (350 NM) SE of Hong Kong.
KROSA is expected to move W/WNW under the southern periphery of the subtropical ridge in the next 24 hours. Numerical predictions are converging to the solution of a decrease in track speed as the ridge slightly weakens north of the storm which places it in a quasi-col environment, and turns to WSW later as the western ridge reintensifies.
KROSA did not suffer substantial intensity loss as it only passed the extreme northern parts of the Philippines. Some intensification is expected in a low shear environment, but after t+36 sea temperatures will drop and this should trigger weakening.
As KROSA edges closer, the combined effect of NE monsoon and the storm will bring stronger east to northeasterly winds to Hong Kong on Saturday and Sunday. There will also be some rain.
隨著羅莎靠近，在東北季候風及風暴的共同影響下香港周六及周日東至東北風將會較大，並會有雨。
Next Update
下次更新
2013/11/02 (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
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
Medium 中等
Low 低
Strong Wind 強風 #3
Medium 中等
High 高
Medium 中等
Low 低
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。
KROSA is expected to move W/WNW under the southern periphery of the subtropical ridge and cross northern Philippines tonight. Numerical predictions are converging to the solution of a decrease in track speed as the ridge slightly weakens north of the storm which places it in a quasi-col environment, and turns to WSW later as the western ridge reintensifies.
KROSA appears to be forming an eye. Some weakening is expected as the storm crosses northern Luzon, but it is expected to re-intensify in South China Sea. Proximity to Hainan and lower sea temperatures will cause the storm to weaken beyond t+72.
KROSA is expected to move W/WNW under the southern periphery of the subtropical ridge and cross northern Philippines later tomorrow. Its track in the South China Sea is more variable, but the storm should move west in general under low-level northeasterly flow.
KROSA is expected to intensify in warm seas in the next 24 hours. The storm will weaken a bit as it tracks through Luzon, but there is some room for re-intensification after it enters the South China Sea.
29W is south of a strong subtropical ridge and is expected to move west fairly quickly towards northern Philippines in the next 48 hours.
29W 處於一較強副熱帶高壓脊以南，預料移速頗快，並於未來 48 小時西移至菲律賓北部。
Intensity
Analysis 強度分析
Current T-number: T2.0/2.0/INT OBS
29W is expected to intensify gradually in the next 48 hours in warm seas. The storm will weaken a bit as it tracks through Luzon.
現時的 T 號碼: T2.0/2.0/INT OBS
29W 將於溫暖海域上在未來 48 小時逐漸增強，但會於橫過呂宋時稍為減弱。
Effects on
Hong Kong 對香港的影響
As 29W enters South China Sea, the combined effect of NE monsoon and the storm may bring stronger winds to Hong Kong later this week.
隨著 29W 稍後進入南海，在東北季候風及風暴的共同影響下香港本周後期風勢或會較大。
Next Update
下次更新
2013/10/30 (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
Signal 信號
t+12
t+24
t+36
t+48
t+60
t+72
Standby 戒備 #1
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。
Active Tropical Cyclone(s) 正活躍之熱帶氣旋
