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Active Tropical Cyclone(s) 正活躍之熱帶氣旋
Tropical Cyclone Report 熱帶氣旋報告

1. 10W (FITOW 菲特)

Name of System 系統名稱 TS FITOW 熱帶風暴菲特
Bulletin Number 發佈編號 #10 FINAL BULLETIN 最後發佈
Time of Report 報告時間 2007/09/07, 16:00 HKT (08:00 UTC)
Time of Observation 觀測時間 2007/09/07, 14 HKT (06 UTC)
Position 位置 39.6 N, 140.8 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 50 knots 節 (Gusts 陣風: 70 knots 節)
Pressure (JMA) 氣壓 (日本氣象廳) 988 hPa
Movement 移向和移速 015 deg 度 (NNE 東北偏東), 26 knots 節
Area(s) that will be affected 受影響地區 Hokkaido 北海道

Forecast Track 預測路徑圖
Overview 總覽

FITOW made landfall shortly after 11pm last night and moved NNE with rapid weakening. As of 06 UTC, FITOW was centred 420 km (230 NM) S of Sapporo, Japan.

菲特於昨夜11時左右登陸日本東南部並轉向東北偏北移動。同時,菲特急速由二級颱風減弱成熱帶風暴。在 06 UTC,菲特集結在札幌以南約 420 公里 (230 海里)。

Movement Analysis 路徑分析

FITOW is now subject to the westerlies and will accelerate in a NE direction.

受到西風帶的影響,菲特將於餘下時間加速向東北移動。

Intensity Analysis 強度分析

As of 06 UTC, FITOW's convection was sheared 40 NM from its low-level circulation centre. This yields a T-number of 3.0 or equivalently 45 knots wind (tropical storm). FITOW should weaken rapidly throughout the forecast period as intrusion of drier air, lower sea surface temperatures, and increase in vertical wind shear are all severely destructive to FITOW's structure. Extratropical transition should finish in 12 hours.

在 06 UTC菲特的對流被切離於其低層環流中心40海里之外得出T號碼為3.0即 45 節的風速 (熱帶風暴)預料菲特將在餘下時間因被較冷的海水、強垂直風切變及乾空氣的入侵影響而急速減弱菲特將於12小時內轉化為溫帶氣旋

Effects on Hong Kong 對香港的影響

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

菲特於未來的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 FITOW.

這是本站對菲特的最後一次發佈。


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

+10W (FITOW 菲特) Bulletin 發佈 #9 (2007/09/06, 21:00 HKT)

Name of System 系統名稱 TY (CAT. 2) FITOW 二級颱風菲特
Bulletin Number 發佈編號 #9
Time of Report 報告時間 2007/09/06, 21:00 HKT (13:00 UTC)
Time of Observation 觀測時間 2007/09/06, 14 HKT (06 UTC)
Position 位置 33.0 N, 138.4 E
1-min. Average Wind Speed 1分鐘平均風速 85 knots 節 (Gusts 陣風: 105 knots 節)
10-min. Average Wind Speed 10分鐘平均風速 65 knots 節 (Gusts 陣風: 105 knots 節)
Pressure (JMA) 氣壓 (日本氣象廳) 965 hPa
Movement 移向和移速 000 deg 度 (N 北), 11 knots 節
Area(s) that will be affected 受影響地區 Eastern Japan 日本東部

Forecast Track 預測路徑圖
Overview 總覽

FITOW turned north last night with slight intensification. As of 06 UTC, FITOW was centred 330 km (180 NM) SSW of Tokyo, Japan.

菲特於過去24小時轉向北移動並稍為增強。在 06 UTC, 菲特集結在東京西南偏南約 330 公里 (180 海里)。

Movement Analysis 路徑分析

FITOW is crossing the ridge axis and a normal recurvature pattern is expected throughout the forecast period, with the westerlies guiding FITOW towards the NE later..

菲特正越過副熱帶高壓脊的脊線。預料受到西風帶的影響,菲特將於橫過日本東部時逐漸轉向東北移動。

Intensity Analysis 強度分析

As of 06 UTC, FITOW's convection wraps 1.6 on the log10 spiral which yields a T-number of 4.5 or equivalently 75-85 knots wind (typhoon category 1-2). FITOW should weaken throughout the forecast period as it is expected to make landfall at Japan, coupled with the intrusion of drier air and lower sea surface temperatures. Extratropical transition should finish by t+36.

在 06 UTC菲特的T號碼為4.5即 75-85 節的風速 (一至二級颱風)預料菲特將在餘下時間因被較冷的海水影響和因登陸日本而減弱菲特將於36小時後轉化為溫帶氣旋

Effects on Hong Kong 對香港的影響

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

菲特於未來的72小時將不會對香港構成任何影響

Next Update 下次更新

19 HKT, 2007/09/07 (or earlier 或更早)

+10W (FITOW 菲特) Bulletin 發佈 #8 (2007/09/05, 19:09 HKT)

Name of System 系統名稱 TY (CAT. 1) FITOW 一級颱風菲特
Bulletin Number 發佈編號 #8
Time of Report 報告時間 2007/09/05, 19:09 HKT (11:09 UTC)
Time of Observation 觀測時間 2007/09/05, 14 HKT (06 UTC)
Position 位置 29.8 N, 139.3 E
1-min. Average Wind Speed 1分鐘平均風速 75 knots 節 (Gusts 陣風: 90 knots 節)
10-min. Average Wind Speed 10分鐘平均風速 65 knots 節 (Gusts 陣風: 95 knots 節)
Pressure (JMA) 氣壓 (日本氣象廳) 965 hPa
Movement 移向和移速 325 deg 度 (NW 西北), 7 knots 節
Area(s) that will be affected 受影響地區 Eastern Japan 日本東部

Forecast Track 預測路徑圖
Overview 總覽

FITOW started its poleward turn last night with slight intensification. As of 06 UTC, FITOW was centred 660 km (360 NM) south of Tokyo, Japan.

菲特於過去24小時轉向西北移動並稍為增強。在 06 UTC, 菲特集結在東京以南約 660 公里 (360 海里)。

Movement Analysis 路徑分析

A weakness has been induced in the subtropical ridge by the mid-latitude trough. FITOW started to turn NW last night, and a recurvature pattern is expected throughout the forecast period.

一道西風槽已在副熱帶高壓脊形成一個弱點,菲特將會逐步轉向,橫過日本東部。

Intensity Analysis 強度分析

As of 06 UTC, FITOW's convection wraps 1.1 on the log10 spiral which yields a T-number of 4.0-4.5 or equivalently 65-75 knots wind (typhoon category 1). Slight intensification is possible when FITOW is recurving as FITOW's outflow will improve due to the arriving trough. FITOW should weaken when it crosses the ridge axis as it is expected to make landfall at Japan, coupled with the intrusion of drier air and lower sea surface temperatures.

在 06 UTC菲特的T號碼為4.0-4.5即 65-75 節的風速 (一級颱風)受到西風槽的影響,菲特可於轉向初期稍作增強。預料菲特將在橫過副熱帶高壓脊的脊線時因被較冷的海水影響和因登陸日本而減弱

Effects on Hong Kong 對香港的影響

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

菲特於未來的72小時將不會對香港構成任何影響

Next Update 下次更新

21 HKT, 2007/09/06 (or earlier 或更早)

+10W (FITOW 菲特) Bulletin 發佈 #7 (2007/09/04, 17:35 HKT)

Name of System 系統名稱 TY (CAT. 1) FITOW 一級颱風菲特
Bulletin Number 發佈編號 #7
Time of Report 報告時間 2007/09/04, 17:35 HKT (09:35 UTC)
Time of Observation 觀測時間 2007/09/04, 14 HKT (06 UTC)
Position 位置 27.9 N, 142.5 E
1-min. Average Wind Speed 1分鐘平均風速 70 knots 節 (Gusts 陣風: 85 knots 節)
10-min. Average Wind Speed 10分鐘平均風速 60 knots 節 (Gusts 陣風: 85 knots 節)
Pressure (JMA) 氣壓 (日本氣象廳) 970 hPa
Movement 移向和移速 295 deg 度 (WNW 西北偏西), 8 knots 節
Area(s) that will be affected 受影響地區 Eastern Japan 日本東部

Forecast Track 預測路徑圖
Overview 總覽

FITOW moved WNW in the past 24 hours with slight weakening. As of 06 UTC, FITOW was centred 910 km (490 NM) south-southeast of Tokyo, Japan.

菲特於過去24小時向西北偏西移動並稍為減弱。在 06 UTC, 菲特集結在東京之東南偏南約 910 公里 (490 海里)。

Movement Analysis 路徑分析

FITOW is now being affected by the ridge north-northeast of it, leading to a generally west-northwestward track. An approaching mid-latitude trough is expected to induce a weakness in the subtropical ridge soon, allowing FITOW to recurve.

受到在菲特東北偏北部的脊場影響,菲特於過去24小時向西北偏西移動。預料一道西風槽即將在副熱帶高壓脊形成一個弱點,菲特將會逐步轉向。

Intensity Analysis 強度分析

As of 06 UTC, FITOW's convection wraps 1.1 on the log10 spiral which yields a T-number of 4.0 or equivalently 65 knots wind (typhoon category 1). Slight intensification is possible before recurvature as FITOW's outflow will improve due to the arriving trough. FITOW should weaken at recurvature as it is expected to make landfall at Japan, coupled with the intrusion of drier air and lower sea surface temperatures.

在 06 UTC菲特的T號碼為4.0即 65 節的風速 (一級颱風)受到西風槽的影響,菲特可於轉向前稍作增強。預料菲特將在轉向開始時因被較冷的海水影響和因登陸日本而減弱

Effects on Hong Kong 對香港的影響

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

菲特於未來的72小時將不會對香港構成任何影響

Next Update 下次更新

21 HKT, 2007/09/05 (or earlier 或更早)

+10W (FITOW 菲特) Bulletin 發佈 #6 (2007/09/03, 17:45 HKT)

Name of System 系統名稱 TY (CAT. 2) FITOW 二級颱風菲特
Bulletin Number 發佈編號 #6
Time of Report 報告時間 2007/09/03, 17:45 HKT (09:45 UTC)
Time of Observation 觀測時間 2007/09/03, 14 HKT (06 UTC)
Position 位置 27.1 N, 146.3 E
1-min. Average Wind Speed 1分鐘平均風速 85 knots 節 (Gusts 陣風: 105 knots 節)
10-min. Average Wind Speed 10分鐘平均風速 60 knots 節 (Gusts 陣風: 85 knots 節)
Pressure (JMA) 氣壓 (日本氣象廳) 970 hPa
Movement 移向和移速 280 deg 度 (W 西), 5 knots 節
Area(s) that will be affected 受影響地區 Southeastern Japan 日本東南部

Forecast Track 預測路徑圖
Overview 總覽

FITOW moved W in the past 24 hours with slight intensification. As of 06 UTC, FITOW was centred 1150 km (620 NM) south-southeast of Tokyo, Japan.

菲特於過去24小時向西移動並稍作增強。在 06 UTC, 菲特集結在東京之東南偏南約 1150 公里 (620 海里)。

Movement Analysis 路徑分析

FITOW is now being affected by the ridge north of it, leading to a generally westward track. An approaching mid-latitude trough is expected to induce a weakness in the subtropical ridge in the coming 24 hours, allowing FITOW to recurve.

受到在菲特北部的脊場影響,菲特於過去24小時向西移動。預料一道西風槽將會在未來 24 小時在副熱帶高壓脊形成一個弱點,菲特將會逐步轉向。

Intensity Analysis 強度分析

As of 06 UTC, FITOW's convection wraps 1.45 on the log10 spiral which yields a T-number of 4.5 or equivalently 80 knots wind (typhoon category 1-2). Slight intensification is possible before recurvature as FITOW's outflow channels continue to improve due to the arriving trough. FITOW should weaken at recurvature as it is expected to make landfall at Japan, coupled with the intrusion of drier air and lower sea surface temperatures.

在 06 UTC菲特的T號碼為4.5即 80-85 節的風速 (一至二級颱風)由於菲特的輻散通道繼續轉好,菲特可於轉向前稍作增強。預料菲特將在轉向開始時因被較冷的海水影響和因登陸日本而減弱

Effects on Hong Kong 對香港的影響

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

菲特於未來的72小時將不會對香港構成任何影響

Next Update 下次更新

21 HKT, 2007/09/04 (or earlier 或更早)

+10W (FITOW 菲特) Bulletin 發佈 #5 (2007/09/02, 15:45 HKT)

Name of System 系統名稱 TY (CAT. 1) FITOW 一級颱風菲特
Bulletin Number 發佈編號 #5
Time of Report 報告時間 2007/09/02, 15:45 HKT (07:45 UTC)
Time of Observation 觀測時間 2007/09/02, 14 HKT (06 UTC)
Position 位置 27.4 N, 148.8 E
1-min. Average Wind Speed 1分鐘平均風速 75 knots 節 (Gusts 陣風: 90 knots 節)
10-min. Average Wind Speed 10分鐘平均風速 60 knots 節 (Gusts 陣風: 85 knots 節)
Pressure (JMA) 氣壓 (日本氣象廳) 970 hPa
Movement 移向和移速 260 deg 度 (W 西), 9 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

FITOW moved WSW in the past 24 hours and its speed has decreased considerably. The JMA downgraded FITOW into a severe tropical storm with strength lingering between 60 to 65 knots. As of 06 UTC, FITOW was centred 1270 km (680 NM) southeast of Tokyo, Japan.

菲特於過去24小時減慢向西南偏西移動;日本氣象廳將菲特降格為強烈熱帶風暴,其強度在60至65節間徘徊。在 06 UTC, 菲特集結在東京之東南約 1270 公里 (680 海里)。

Movement Analysis 路徑分析

The ridge south of Japan has developed and provided a southward component to FITOW's movement in the past 24 hours. Such ridge will move gradually towards the east which makes FITOW resume its westward track in the coming 48 hours. After that, an approaching mid-latitude trough is expected to induce a weakness in the subtropical ridge, allowing FITOW to recurve.

在日本南部的脊場已經形成並引導菲特向西南偏西方移動。此脊場將逐漸東移,令菲特於其後36小時恢復向偏西移動。此後一道西風槽將會在副熱帶高壓脊形成一個弱點,菲特將會逐步轉向偏北方向移動。

Intensity Analysis 強度分析

As of 06 UTC, FITOW's convection wraps 1.2 on the log10 spiral which yields a T-number of 4.0 or equivalently 65-70 knots wind (typhoon category 1). Slight intensification is possible before recurvature as FITOW's outflow channels continue to improve. FITOW should weaken at recurvature as it is expected to make landfall at Japan, coupled with the intrusion of drier air and lower sea surface temperatures.

在 06 UTC菲特的T號碼為4.0即 65-70 節的風速 (一級颱風)由於菲特的輻散通道繼續轉好,菲特可於轉向前稍作增強。預料菲特將在轉向開始時因被較冷的海水影響和因登陸日本而減弱

Effects on Hong Kong 對香港的影響

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

菲特於未來的72小時將不會對香港構成任何影響

Next Update 下次更新

19 HKT, 2007/09/03 (or earlier 或更早)

+10W (FITOW 菲特) Bulletin 發佈 #4 (2007/09/01, 18:21 HKT)

Name of System 系統名稱 TY (CAT. 1) FITOW 一級颱風菲特

Bulletin Number 發佈編號 #4
Time of Report 報告時間 2007/09/01, 18:21 HKT (10:21 UTC)
Time of Observation 觀測時間 2007/09/01, 14 HKT (06 UTC)
Position 位置 28.1 N, 151.6 E
1-min. Average Wind Speed 1分鐘平均風速 75 knots 節 (Gusts 陣風: 90 knots 節)
10-min. Average Wind Speed 10分鐘平均風速 65 knots 節 (Gusts 陣風: 95 knots 節)
Pressure (JMA) 氣壓 (日本氣象廳) 970 hPa
Movement 移向和移速 290 deg 度 (WNW 西北偏西), 6 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

FITOW moved WNW in the past 24 hours with decreasing speed. Meanwhile its intensity remained rather stable during the same period. As of 06 UTC, FITOW was centred 1400 km (760 NM) southeast of Tokyo, Japan.

菲特於過去24小時向西北偏西移動,強度大致不變。在 06 UTC, 菲特集結在東京之東南約 1400 公里 (760 海里)。

Movement Analysis 路徑分析

From the steering flow chart, it is evident that the ridge NE of FITOW has extended towards the west. It provides the primary steering force to FITOW that led it WNW during the past 24 hours. Another ridge is expected to develop southeast of Japan that may provide another steering for FITOW to move WSW in the next 36 hours. After that, the SE ridge should weaken and a mid-latitude trough is expected to induce a weakness in the ridge, allowing FITOW to recurve.

在菲特東北面的脊場於過去24小時顯著西伸,帶領菲特向西北偏西移動。預計在未來36小時,日本南部的脊場將會增強並引導菲特向西南偏西方移動。此後,在日本南部的脊場將會減弱,而一道西風槽將會在副熱帶高壓脊形成一個弱點,菲特將會逐步轉向偏北方向移動。

Intensity Analysis 強度分析

As of 06 UTC, FITOW's convection wraps 1.3 on the log10 spiral which yields a T-number of 4.0 or equivalently 65-70 knots wind (typhoon category 1). From the satellite imageries, FITOW was intruded by more stable air that led to its temporarily deformed structure, with a slight decrease in intensity. However since its ouflow channels were still improving, FITOW was able to maintain intensity during the past 24 hours.iIt is expected that FITOW will intensify at less than climatological rate before recurvature as outflow channels continue to improve, after which the influence of cooler sea surface temperatures will be more prominent and FITOW's strength will substantially decline.

在 06 UTC菲特的T號碼為4.0即 65-70 節的風速 (一級颱風)菲特昨夜被較乾燥的空氣入侵,強度稍微下降。但是菲特的輻散通道轉好,它因而能夠維持強度。預料菲特將在其後72小時以比氣候平均值稍慢的速度增強並在轉向開始時因被較冷的海水影響而減弱

Effects on Hong Kong 對香港的影響

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

菲特於未來的72小時將不會對香港構成任何影響

Next Update 下次更新

19 HKT, 2007/09/02 (or earlier 或更早)

+10W (FITOW 菲特) Bulletin 發佈 #3 (2007/08/31, 18:45 HKT)

Name of System 系統名稱 TY (CAT. 1) FITOW 一級颱風菲特
Bulletin Number 發佈編號 #3
Time of Report 報告時間 2007/08/31, 18:45 HKT (10:45 UTC)
Time of Observation 觀測時間 2007/08/31, 14 HKT (06 UTC)
Position 位置 27.1 N, 154.8 E
1-min. Average Wind Speed 1分鐘平均風速 80 knots 節 (Gusts 陣風: 100 knots 節)
10-min. Average Wind Speed 10分鐘平均風速 65 knots 節 (Gusts 陣風: 95 knots 節)
Pressure (JMA) 氣壓 (日本氣象廳) 970 hPa
Movement 移向和移速 325 deg 度 (NW 西北), 6 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

FITOW moved WNW to NW in the past 24 hours, gradually making its turn towards the west. Meanwhile its intensity remained rather stable during the same period, with only slight intensification. As of 06 UTC, FITOW was centred 1720 km (930 NM) southeast of Tokyo, Japan.

菲特昨夜轉向西北偏西至西北移動,同時增強了少許。在 06 UTC, 菲特集結在東京之東南約 1720 公里 (930 海里)。

Movement Analysis 路徑分析

Subject to the influence of the building ridge NE of the storm, FITOW turned NW last night. However models diverge concerning the later movement of the system - with a few of them depicting a SW movement due to a strengthening ridge south of Japan. Nevertheless, the majority of the models forecast a weaker ridge south of Japan, allowing FITOW to be influenced more by the subtropical ridge NE of it. In this sense, a general WNW motion can be maintained.

In the extended forecast period, a mid-latitude trough is expected to induce a weakness in the ridge, allowing FITOW to recurve.

菲特開始受到在其東北面的脊場影響,於過去24小時轉向西北移動。預報模式對菲特的移向有一定的分歧,部分模式預計在日本南部的脊場將會增強並引導菲特向西南方移動,但大部分的預報模式均預計在菲特東北面的脊場將會比日本南部的脊場強,菲特因而能繼續向西北偏西移動。在 t+72 以後,預料一道西風槽將會在副熱帶高壓脊形成一個弱點,菲特將會逐步轉向偏北方向移動。

Intensity Analysis 強度分析

As of 06 UTC, FITOW's convection wraps 1.05 on the log10 spiral which yields a T-number of 4.0-4.5 or equivalently 65-80 knots wind (typhoon category 1). FITOW's restricted equatorward outflow, together with the introduction of drier air, have led to its decrease in intensification rate in the past 24 hours. It is expected that FITOW will intensify at less than climatological rate in the remainder of the forecast period.

在 06 UTC菲特的T號碼為4.0-4.5即 65-80 節的風速 (一級颱風)菲特的橫向輻散通道有被阻礙之勢,加上較乾燥的空氣,使得菲特的增強速度減慢。預料菲特將在其後72小時以比氣候平均值稍慢的速度增強

Effects on Hong Kong 對香港的影響

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

菲特於未來的72小時將不會對香港構成任何影響

Next Update 下次更新

19 HKT, 2007/09/01 (or earlier 或更早)

+10W (FITOW 菲特) Bulletin 發佈 #2 (2007/08/30, 18:20 HKT)

Name of System 系統名稱 TY (CAT. 1) FITOW 一級颱風菲特
Bulletin Number 發佈編號 #2
Time of Report 報告時間 2007/08/30, 18:20 HKT (10:20 UTC)
Time of Observation 觀測時間 2007/08/30, 14 HKT (06 UTC)
Position 位置 24.5 N, 157.0 E
1-min. Average Wind Speed 1分鐘平均風速 65 knots 節 (Gusts 陣風: 80 knots 節)
10-min. Average Wind Speed 10分鐘平均風速 60 knots 節 (Gusts 陣風: 85 knots 節)
Pressure (JMA) 氣壓 (日本氣象廳) 975 hPa
Movement 移向和移速 035 deg 度 (NE 東北), 5 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

FITOW travelled further NNE last night and strengthened into a typhoon. As of 06 UTC, FITOW was centred 2080 km (1120 NM) southeast of Tokyo, Japan.

菲特昨夜向東北偏北移動並增強成為一個一級颱風。在 06 UTC, 菲特集結在東京之東南約 2080 公里 (1120 海里)。

Movement Analysis 路徑分析

FITOW has been moving steadily towards NNE in the past 24 hours due to the ridging SE of the system along a broad monsoon circulation. It is expected that the building of the subtropical ridge NE of FITOW will allow a W-WNW track afterwards.

受到菲特東南面的脊場影響,菲特於過去24小時穩定向東北偏北移動。預料稍後在菲特東北面的副熱帶高壓脊將會慢慢建立,引導菲特向偏西方向移動。

Intensity Analysis 強度分析

As of 06 UTC, FITOW's convection wraps 0.9 on the log10 spiral. Together with its banding feature, a T-number of 4.0 or equivalently 65 knots wind (typhoon category 1) is obtained. FITOW intensified steadily last night due to good atmospheric envionment. As the sea temperature at that area is generally warm and favorable to the development of tropical cyclones and that the vertical wind shear has weakened slightly, FITOW should be able to intensify at a climatological rate in the next 72 hours, after which its development could be hindered by the reduced poleward outflow.

在 06 UTC菲特的T號碼為4.0即 65 節的風速 (一級颱風)由於菲特正在良好的大氣環境之中,菲特昨夜穩定增強。它目前處於溫暖的海水之中,而附近的垂直風切變也有減弱之勢,都有利它在將來的72小時以氣候平均值的速度發展其後菲特的極向輻散通道有機會減弱增強速度因而減慢

Effects on Hong Kong 對香港的影響

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

菲特於未來的72小時將不會對香港構成任何影響

Next Update 下次更新

20 HKT, 2007/08/31 (or earlier 或更早)

+10W (FITOW 菲特) Bulletin 發佈 #1 (2007/08/29, 17:24 HKT)

Name of System 系統名稱 STS FITOW 強烈熱帶風暴菲特
Bulletin Number 發佈編號 #1
Time of Report 報告時間 2007/08/29, 17:24 HKT (09:24 UTC)
Time of Observation 觀測時間 2007/08/29, 14 HKT (06 UTC)
Position 位置 21.7 N, 156.0 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 35 knots 節 (Gusts 陣風: 50 knots 節)
Pressure (JMA) 氣壓 (日本氣象廳) 996 hPa
Movement 移向和移速 010 deg 度 (N 北), 6 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

JTWC issued the first advisory on FITOW at 2007/08/28 18 UTC. FITOW has travelled NE to NNE for quite a long distance before it attained tropical depression strength. It then strengthened rapidly into a 35-knot tropical storm at 00 UTC's advisory, and eventually to a 50-knot severe tropical storm now. As of 06 UTC, FITOW was centred 2230 km (1200 NM) southeast of Tokyo, Japan.

聯合颱風警報中心於 2007/08/28 18 UTC 對菲特作出第一個發佈。於增強成為熱帶低氣壓前,菲特已於西北太平洋向東北/東北偏北移動了一段不短的距離。菲特於昨晚和今天迅速增強成為一強烈熱帶風暴。在 06 UTC, 菲特集結在東京之東南約 2230 公里 (1200 海里)。

Movement Analysis 路徑分析

FITOW has been moving steadily towards NE - NNE in the past 24 hours due to the ridging SE of the system along a broad monsoon circulation. It is expected that the building of the subtropical ridge NE of FITOW will allow a W-WNW track afterwards.

受到菲特東南面的脊場影響,菲特於過去24小時穩定向東北/東北偏北移動。預料稍後在菲特東北面的副熱帶高壓脊將會慢慢建立,引導菲特向偏西方向移動。

Intensity Analysis 強度分析

As of 06 UTC, FITOW's convection wraps 1.0 on the log10 spiral which gives a T-number of 3.5 or equivalently 50-55 knots wind (severe tropical storm). As the sea temperature at that area is generally warm and favorable to the development of tropical cyclones, FITOW should be able to intensify at a climatological rate in the next 72 hours, after which its development could be hindered by the reduced poleward outflow.

在 06 UTC菲特的T號碼為3.5即 50-55 節的風速 (強烈熱帶風暴)菲特目前處於溫暖的海水之中,有利它在將來的72小時以氣候平均值的速度發展其後菲特的極向輻散通道有機會減弱增強速度因而減慢

Effects on Hong Kong 對香港的影響

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

菲特於未來的72小時將不會對香港構成任何影響

Next Update 下次更新

19 HKT, 2007/08/30 (or earlier 或更早)

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