Name of System 系統名稱 |
TD 15W 熱帶低氣壓 15W |

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Bulletin Number 發佈編號 |
#2 |
Time of Report 報告時間 |
2007/09/23, 11:30 HKT (03:30 UTC) |
Time of Observation 觀測時間 |
2007/09/23, 11 HKT (03 UTC) |
Position 位置 |
20.0 N, 115.7 E (HKO) |
1-min. Average Wind Speed 1分鐘平均風速 |
25 knots 節 (Gusts 陣風: 35 knots 節) (JTWC) |
10-min. Average Wind Speed 10分鐘平均風速 |
30 knots 節 (Gusts 陣風: n/a knots 節) (HKO) |
Pressure (JMA) 氣壓 (日本氣象廳) |
995 hPa (HKO) |
Movement 移向和移速 |
270 deg 度 (W 西), 9 knots 節 (HKO) |
Area(s) that will be affected 受影響地區 |
Northern South China Sea 南中國海北部 |
Forecast Track 預測路徑圖 (as of 截至 00 UTC) |
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Overview 總覽 |
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HKWW upgraded 95W into a tropical depression at 17:40 UTC yesterday. The initial position was 19.5N 117.7E, which was 480 km (260 NM) SE of Hong Kong. JTWC upgraded 95W at 00 UTC and it was given a temporary number of 15W. At 03 UTC, 15W was centred 300 km (160 NM) SSE of Hong Kong.
本站於昨天 17:40 UTC 將 95W 升格為熱帶低氣壓,當時 95W 集結在香港東南約 480 公里 (260 海里)。聯合颱風警報中心亦於今天 00 UTC 把95W 升格,並給予臨時編號 15W。在 03 UTC,15W 集結在香港東南偏南約 300 公里 (160 海里)。
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Movement Analysis 路徑分析 |
The storm is going to be tracked in a generally westerly direction due to an easterly airstream throughout the forecast period. According to the current forecast track, 15W may be closest to Hong Kong tonight to tomorrow morning at a distance of about 250 km (135 NM).
受到一股偏東氣流影響,15W 將向西移動。按照目前路徑,15W 將會於今晚至明早在香港以南約 250 公里 (135 海里) 掠過。 |
Intensity Analysis 強度分析 |
T-Number at 03 UTC: T2.0/3.0/D1.0/24HRS.
It is expected that 15W will gain tropical storm strength later today as it travels along the warm South China Sea. After 48 hours, 15W should weaken as it interacts with land near Hainan.
在 03 UTC 的 T 號碼: T2.0/3.0/D1.0/24HRS.
預計 15W 將於溫暖的海水及微弱垂直風切變的環境下略為增強。在48小時後15W將會受陸地影響而開始減弱。 |
Effects on Hong Kong 對香港的影響 |
Strong northerly winds, turning gradually into easterly, will affect Hong Kong in the next 2 days.
香港將會在未來兩天受偏北強風(漸轉偏東強風) 影響。 |
Next Update 下次更新 |
22 HKT, 2007/09/23 (or earlier 或更早) |