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Active Tropical Cyclone(s) 正活躍之熱帶氣旋

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Tropical Cyclone Report 熱帶氣旋報告

1. 11W (DANAS 丹娜絲)

Name of System 系統名稱 STS DANAS 強烈熱帶風暴 丹娜絲
Bulletin Number 發佈編號 #5 FINAL BULLETIN 最後發佈
Time of Report 報告時間 2007/09/11, 19:00 HKT (11:00 UTC)
Time of Observation 觀測時間 2007/09/11, 14 HKT (06 UTC)
Position 位置 41.3 N, 162.2 E
1-min. Average Wind Speed 1分鐘平均風速 55 knots 節 (Gusts 陣風: 70 knots 節)
10-min. Average Wind Speed 10分鐘平均風速 50 knots 節 (Gusts 陣風: 70 knots 節)
Pressure (JMA) 氣壓 (日本氣象廳) 994 hPa
Movement 移向和移速 090 deg 度 (E 東), 30 knots 節
Area(s) that will be affected 受影響地區 N/A

Forecast Track 預測路徑圖
Overview 總覽
Other images 其他圖像
JTWC
JTWC聯合颱風警報中心
JMA
JMA日本氣象廳
HKO
HKO Satellite 香港天文台衛星圖

DANAS moved E in the past 6 hours with slight weakening.

丹娜絲於過去6小時向東移動,並減弱了少許。

Movement Analysis 路徑分析

DANAS is now situated N of an extending subtropical ridge and should move in E direction in the remainder of the forecast period.

丹娜絲現在位於西伸中的副熱帶高壓脊之北部,預料在餘下時間向東移動。

Intensity Analysis 強度分析

As of 06 UTC, DANAS's convection wrapped 0.65 on the log10 spiral which yields a T-number of 3.0 or equivalently 45-50 knots wind (tropical storm to severe tropical storm). DANAS is now subject to high vertical wind shea, and it will substantially decrease in strength throughout the forecast period.

在 06 UTC丹娜絲的T號碼為3.0即 45-50 節的風速 (熱帶風暴至強烈熱帶風暴)丹娜絲現正處於垂直風切變較強的地區,預料將會在餘下時間減弱

Effects on Hong Kong 對香港的影響

No threat to Hong Kong is expected within the next 72 hours.

丹娜絲於未來的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 DANAS.

這是本站對丹娜絲的最後一次發佈。


Past Bulletins (click on the bulletin no. for the contents) 過往報告 (請按發佈編號顯示內容)

+11W (DANAS 丹娜絲) Bulletin 發佈 #4 (2007/09/10, 18:45 HKT)

Name of System 系統名稱 STS DANAS 強烈熱帶風暴 丹娜絲
Bulletin Number 發佈編號 #4
Time of Report 報告時間 2007/09/10, 18:45 HKT (10:45 UTC)
Time of Observation 觀測時間 2007/09/10, 14 HKT (06 UTC)
Position 位置 38.2 N, 150.2 E
1-min. Average Wind Speed 1分鐘平均風速 60 knots 節 (Gusts 陣風: 75 knots 節)
10-min. Average Wind Speed 10分鐘平均風速 50 knots 節 (Gusts 陣風: 70 knots 節)
Pressure (JMA) 氣壓 (日本氣象廳) 994 hPa
Movement 移向和移速 035 deg 度 (NE 東北), 19 knots 節
Area(s) that will be affected 受影響地區 N/A

Forecast Track 預測路徑圖
Overview 總覽
Other images 其他圖像
JTWC
JTWC聯合颱風警報中心
JMA
JMA日本氣象廳
HKO
HKO Satellite 香港天文台衛星圖

DANAS moved NE in the past 6 hours with slight intensification. As of 06 UTC, DANAS was centred 970 km (520 NM) ENE of Tokyo, Japan.

丹娜絲於過去6小時向東北移動,並增強了少許。在 06 UTC,丹娜絲集結在東京東北偏東約 970 公里 (520 海里)。

Movement Analysis 路徑分析

DANAS is now situated NW of the steering subtropical ridge and should move in NE direction in the remainder of the forecast period.

丹娜絲現在位於副熱帶高壓脊之西北部,預料在餘下時間向東北移動。

Intensity Analysis 強度分析

As of 06 UTC, DANAS's convection wrapped 1.1 on the log10 spiral which yields a T-number of 4.0 or equivalently 60 knots wind (severe tropical storm). DANAS is entering areas with lower SSTs that will lead to the weaking of the system. High vertical wind shear will also be imminent, and DANAS will substantially decrease in strength throughout the forecast period.

在 06 UTC丹娜絲的T號碼為4.0即 60 節的風速 (強烈熱帶風暴)丹娜絲現正進入海水溫度較低及垂直風切變較強的地區,預料將會在餘下時間減弱

Effects on Hong Kong 對香港的影響

No threat to Hong Kong is expected within the next 72 hours.

丹娜絲於未來的72小時將不會對香港構成任何影響

Next Update 下次更新

19 HKT, 2007/09/11 (or earlier 或更早)

+11W (DANAS 丹娜絲) Bulletin 發佈 #3 (2007/09/09, 17:00 HKT)

Name of System 系統名稱 STS DANAS 強烈熱帶風暴 丹娜絲
Bulletin Number 發佈編號 #3
Time of Report 報告時間 2007/09/09, 17:00 HKT (09:00 UTC)
Time of Observation 觀測時間 2007/09/09, 14 HKT (06 UTC)
Position 位置 33.2 N, 148.7 E
1-min. Average Wind Speed 1分鐘平均風速 50 knots 節 (Gusts 陣風: 65 knots 節)
10-min. Average Wind Speed 10分鐘平均風速 45 knots 節 (Gusts 陣風: 65 knots 節)
Pressure (JMA) 氣壓 (日本氣象廳) 998 hPa
Movement 移向和移速 330 deg 度 (NNW 西北偏北), 12 knots 節
Area(s) that will be affected 受影響地區 N/A

Forecast Track 預測路徑圖
Overview 總覽
Other images 其他圖像
JTWC
JTWC聯合颱風警報中心
JMA
JMA日本氣象廳
HKO
HKO Satellite 香港天文台衛星圖

DANAS intensified into a severe tropical storm last night and moved NW/NNW. As of 06 UTC, DANAS was centred 870 km (470 NM) ESE of Tokyo, Japan.

丹娜絲昨晚增強為一強烈熱帶風暴,並向西北至西北偏北移動。在 06 UTC,丹娜絲集結在東京東南偏東約 870 公里 (470 海里)。

Movement Analysis 路徑分析

The northern extension of the subtropical ridge E of DANAS has retreated and DANAS is tracking across the ridge axis. DANAS will be situated NW of the ridge later and should move in NNE/NE movement after 24-36 hours.

位於丹娜絲東部的副熱帶高壓脊之北端延伸已東退,而丹娜絲正橫過副熱帶高壓脊之脊線。預料丹娜絲稍後將會處於副熱帶高壓脊之西北部,向東北偏北/東北移動。

Intensity Analysis 強度分析

As of 06 UTC, DANAS's convection wrapped 0.65 on the log10 spiral which yields a T-number of 3.0 or equivalently 45-50 knots wind (tropical storm to severe tropical storm). DANAS will soon enter areas with lower SSTs that will lead to the weaking of the system when it crosses the ridge axis. Vertical wind shear will also be significantly higher after passage of ridge axis, and DANAS will substantially decrease in strength throughout the forecast period.

在 06 UTC丹娜絲的T號碼為3.0即 45-50 節的風速 (熱帶風暴至強烈熱帶風暴)丹娜絲即將進入海水溫度較低的地區,另因北部的垂直風切變較強,丹娜絲將會在於下時間減弱

Effects on Hong Kong 對香港的影響

No threat to Hong Kong is expected within the next 72 hours.

丹娜絲於未來的72小時將不會對香港構成任何影響

Next Update 下次更新

19 HKT, 2007/09/10 (or earlier 或更早)

+11W (DANAS 丹娜絲) Bulletin 發佈 #2 (2007/09/08, 17:00 HKT)

Name of System 系統名稱 TS DANAS 熱帶風暴 丹娜絲
Bulletin Number 發佈編號 #2
Time of Report 報告時間 2007/09/08, 17:00 HKT (09:00 UTC)
Time of Observation 觀測時間 2007/09/08, 14 HKT (06 UTC)
Position 位置 30.2 N, 152.7 E
1-min. Average Wind Speed 1分鐘平均風速 45 knots 節 (Gusts 陣風: 55 knots 節)
10-min. Average Wind Speed 10分鐘平均風速 45 knots 節 (Gusts 陣風: 65 knots 節)
Pressure (JMA) 氣壓 (日本氣象廳) 998 hPa
Movement 移向和移速 305 deg 度 (NW 西北), 14 knots 節
Area(s) that will be affected 受影響地區 N/A

Forecast Track 預測路徑圖
Overview 總覽

11W intensified into a tropical storm last night and was named DANAS. As of 06 UTC, DANAS was centred 1360 km (730 NM) ESE of Tokyo, Japan.

11W 昨晚增強為一熱帶風暴,並被命名為丹娜絲。在 06 UTC,丹娜絲集結在東京東南偏東約 1360 公里 (730 海里)。

Movement Analysis 路徑分析

Subject to the northern extension of a subtropical ridge anchored E of DANAS, it moved NW in the past 24 hours. The ridge is expected to retreat after t+24 and DANAS will track along the weakness to cross the ridge axis by t+36. A recurvature pattern should occur.

丹娜絲現時位於副熱帶高壓脊北端延伸之西南部,於過去24小時向西北移動。預料副熱帶高壓脊將於24小時後顯著東退,丹娜絲因而會於36小時後橫過脊線,形成一般的"轉向型"路徑。

Intensity Analysis 強度分析

As of 06 UTC, DANAS's convection wrapped 0.7 on the log10 spiral which yields a T-number of 3.0 or equivalently 45 knots wind (tropical storm). Sea surface temperatures (SSTs) are at about 27 degrees at where DANAS is located, and therefore it can intensify a bit at less than climatological rate through t+36. Since it is formed a bit north, it will soon enter areas with lower SSTs that will lead to the weaking of the system when it crosses the ridge axis. Vertical wind shear will also be significantly higher after passage of ridge axis, and DANAS will substantially decrease in strength after t+36.

在 06 UTC丹娜絲的T號碼為3.0即 45 節的風速 (熱帶風暴)預料丹娜絲可在約27度的海水中稍為增強至強烈熱帶風暴,但由於丹娜絲形成位置偏北海水溫度將隨丹娜絲的緯度增加而下降,另因北部的垂直風切變也較強,丹娜絲將會在達到颱風強度前減弱

Effects on Hong Kong 對香港的影響

No threat to Hong Kong is expected within the next 72 hours.

丹娜絲於未來的72小時將不會對香港構成任何影響

Next Update 下次更新

19 HKT, 2007/09/09 (or earlier 或更早)

+11W (DANAS 丹娜絲) Bulletin 發佈 #1 (2007/09/07, 17:20 HKT)

Name of System 系統名稱 TD 11W 熱帶低氣壓 11W
Bulletin Number 發佈編號 #1
Time of Report 報告時間 2007/09/07, 17:20 HKT (09:20 UTC)
Time of Observation 觀測時間 2007/09/07, 14 HKT (06 UTC)
Position 位置 26.3 N, 157.0 E
1-min. Average Wind Speed 1分鐘平均風速 30 knots 節 (Gusts 陣風: 40 knots 節)
10-min. Average Wind Speed 10分鐘平均風速 30 knots 節 (Gusts 陣風: 45 knots 節)
Pressure (JMA) 氣壓 (日本氣象廳) 1004 hPa
Movement 移向和移速 315 deg 度 (NW 西北), 7 knots 節
Area(s) that will be affected 受影響地區 N/A

Forecast Track 預測路徑圖
Overview 總覽

11W intensified to a tropical depression at 06 UTC, moving in a WNW direction in the past 24 hours. As of 06 UTC, 11W was centred 1950 km (1060 NM) ESE of Tokyo, Japan.

11W 於 06 UTC 增強為一熱帶低氣壓,大致向西北偏西移動。在 06 UTC,11W集結在東京東南偏東約 1950 公里 (1060 海里)。

Movement Analysis 路徑分析

Subject to the northern extension of a subtropical ridge anchored E of 11W, it moved WNW in the past 24 hours. As 11W advances to the west, it will be positioned SW of the ridge that makes it travel in a NW direction, after which it can follow a recurvature pattern as it will be situated at the western side of the retreating subtropical ridge.

11W現時位於副熱帶高壓脊北端延伸之南部,於過去24小時向西北偏西移動。預料當11W繼續西移,它將會位處於該脊之西南部,從而向西北移動。稍後因副熱帶高壓脊繼續東退,11W將會從該脊的西端北上,跟隨一般的"轉向型"路徑。

Intensity Analysis 強度分析

As of 06 UTC, 11W's convection wrapped 0.35 on the log10 spiral which yields a T-number of 2.0 or equivalently 30 knots wind (tropical depression). Sea surface temperatures (SSTs) are at about 27 degrees at where 11W is located, and therefore it can intensify a bit at less than climatological rate. Since it is formed a bit north, it will soon enter areas with lower SSTs that will lead to the weaking of the system. In the current forecast, 11W will not be able to attain typhoon intensity at all.

在 06 UTC11W的T號碼為2.0即 30 節的風速 (熱帶低氣壓)預料11W可在約27度的海水中稍為增強至強烈熱帶風暴,但由於11W形成位置偏北海水溫度將隨11W的緯度增加而下降11W亦會在達到颱風強度前減弱

Effects on Hong Kong 對香港的影響

No threat to Hong Kong is expected within the next 72 hours.

11W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

21 HKT, 2007/09/08 (or earlier 或更早)

Last Accessed 最近訪問日期: Tue Oct 22 2019 03:52:42 HKT
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