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TC Watch / 熱帶氣旋 > Selected TC Review / 重要熱帶氣旋回顧 > 202503W [Refresh 更新]

202503W - Profile 檔案

(First draft issued on June 28, 2025, final version issued on December 4, 2025)
(初稿於 2025 年 6 月 28 日發出，最後版本於 2025 年 12 月 4 日上載)

Brief profile of 03W | 03W 小檔案:

^Refers to the period between the HK Observatory's first and last bulletins for the tropical cyclone (with at least tropical depression intensity). For storms formed/dissipated/transformed into an extratropical cyclone outside the area bounded by 7-36°N and 100-140°E, information from the JTWC will be used instead.
^即香港天文台為該熱帶氣旋（熱帶低氣壓級或更高）作出發佈的時期。至於在北緯 7 至 36 度、東經 100 至 140 度外形成／消散／轉化為溫帶氣旋的風暴，本網將參考聯合颱風警報中心的資料。

TC signals in Hong Kong* 香港曾經生效的熱帶氣旋警告*:

Signal 信號	Date and time 日期和時間	Distance from HK 與香港的距離	Predicted movement 預測移動趨勢	Max. 10-min winds 中心最高十分鐘平均風速
	2025/06/25 (WED) 14:20 HKT	S 490 km	NW at 18 km/h	45 km/h (25 knots, TD)
	2025/06/26 (THU) 14:20 HKT	WSW 430 km	NW at 15 km/h	55 km/h (30 knots, TD)

*Based on the information from real-time tropical cyclone warning bulletins.
*根據實時熱帶氣旋警報資料。

Percentile Ranks 百分等級:

IR imagery animation 紅外線雲圖動畫:

TC track from HKWW 本站的熱帶氣旋路徑圖:

TC track(s) from HKO 天文台的熱帶氣旋路徑圖:

Past HKWW Bulletins 本站發佈

Please click here for bulletins on this tropical cyclone. 請按這裡。

Storm Development Overview 風暴發展概覽

Unless otherwise stated, all times below are in Hong Kong Standard Time (UTC+8)
除非特別註明，下文時間均為香港標準時間（協調世界時加 8 小時）

A tropical disturbance, designated as 96W by the JTWC, appeared in central South China Sea in late June. Its spiraling cloud bands became apparent on June 25, and the JTWC issued a tropical cyclone formation alert at 8 am. 96W developed into a small-scale tropical depression (03W) in the afternoon. The NMC also upgraded this system into tropical depression status at that time.

03W was steered by the subtropical ridge to the northeast, and moved northwest on June 25. The storm struggled to gain strength due to the moderate vertical wind shear and weak upper-level divergence in the region at that time. 03W made landfall at Wengtian town, Hainan at about 5:20 am June 26 as a minimal tropical depression according to the NMC. A second landfall near Xuwen county on the Leizhou Peninsula is observed near 10 am the same day. As seen on satellite images, most of 03W's convections were sheared to the west as it approached land.

03W moved into Guangxi and further inland in the rest of June 26. The storm's deep convections dissipated gradually, and it weakened into an area of low pressure overnight.

被聯合颱風警報中心（聯颱）編號為 96W 的熱帶擾動於 6 月下旬在南海中部出現。該擾動的螺旋雲帶於 25 日漸見明顯，聯颱於早上 8 時發出熱帶氣旋形成警報。96W 於當天下午發展為一小型熱帶低氣壓（03W），而中國中央氣象台亦於同時作出升格。

03W 受東北方的副熱帶高壓脊引導，於 6 月 25 日向西北移動。由於當時該區垂直風切變水平中等且高空輻散偏弱，風暴未能增強。中央氣象台表示，03W 於 26 日上午約 5 時 20 分以熱帶低氣壓下限強度登陸海南翁田鎮，其後於上午 10 時左右登陸雷州半島的徐聞縣。從衛星雲圖上可見，登陸時 03W 大部份的對流被切離至風暴西面。

03W 於 6 月 26 日餘下時間移入內陸並進入廣西省，其深層對流逐漸消散，半夜減弱為低壓區。

Weather in Hong Kong During Approach 風暴影響時香港天氣狀況

Link to relevant HKO weather report bulletins: 25/6 ● 26/6
香港天文台相關天氣報告連結： 25/6 ● 26/6

The HK Observatory initially forecast that a trough of low pressure would bring unstable weather to the coast of southern China later that week. As the system showed signs of development, the Observatory suggested that a tropical cyclone appeared to be forming at 9:45 am June 25. At around 12:30 pm, the Observatory upgraded 03W into a tropical depression and indicated that the #1 Standby Signal would be issued at 2:20 pm. 03W was situated around 490 km south of Hong Kong at the time of signal issuance.

Locally, it was very hot with plenty of sunshine on June 25. However, the Observatory expressed that the outer rainbands associated with 03W would start to affect coastal Guangdong that night, and that squally showers and thunderstorms would be expected on June 26. As 03W was a small, weak system, winds in Hong Kong remained moderate. The Observatory suggested that the chance of observing sustained strong winds generally over Hong Kong was relatively low.

03W was closest to Hong Kong in the small hours of June 26, passing at a distance of around 420 km to the southwest. Squally showers started to affect the territory. At 8 am, the Observatory said it would consider cancelling the #1 Signal between 2 pm and 5 pm that day. Near noon, the time was determined to be 2:20 pm, and 03W was around 430 km west-southwest of Hong Kong when the signal was cancelled.

The weather in Hong Kong remained unstable that day, and a broad rainband necessitated the Amber Rainstorm Warning between 5:05 pm and 7:05 pm. The daily rainfall was 48.9 mm at the Observatory, and it generally reached 40 mm in the central parts of Hong Kong.

香港天文台初時預測一道低壓槽將於當周稍後時間為華南沿岸帶來不穩定天氣。由於 03W 有跡象發展，天文台於 6 月 25 日上午 9 時 45 分表示一個熱帶氣旋似乎正在形成中。下午約 12 時 30 分，天文台將 03W 升格為熱帶低氣壓並表示會於下午 2 時 20 分發出一號戒備信號。該信號發出之時，03W 位於香港以南約 490 公里。

6 月 25 日本港天氣酷熱，陽光充沛。然而，天文台指出 03W 的外圍雨帶將於當晚開始影響廣東沿岸，26 日將有狂風驟雨及雷暴。由於 03W 是一較細小及偏弱的系統，香港風勢維持和緩水平，而天文台亦表示本港普遍地區持續吹強風的機會較低。

03W 於 6 月 26 日凌晨時份最接近香港，於西南方約 420 公里處掠過，而狂風驟雨開始影響本港。上午 8 時，天文台表示將考慮於當天下午 2 至 5 時取消一號信號。正午時份，信號取消的時間定為下午 2 時 20 分，而信號取消時 03W 位於香港西南偏西約 430 公里。

本港當日天氣仍然不穩定，受一道廣闊雨帶影響，黃色暴雨警告於下午 5 時 05 分至 7 時 05 分期間生效。天文台當日錄得 48.9 毫米雨量，而本港近中心地區雨量普遍達 40 毫米。

Image Gallery 圖片庫

Figure 1 - ECMWF model ensemble forecast at 8 am June 23
圖 1 - 6 月 23 日上午 8 時之 ECMWF 模式集成預報

Figure 2 - Satellite images at 9 am June 25 (left) and June 26 (right)
圖 2 - 6 月 25 日（左）及 26 日（右）上午 9 時之衛星雲圖

Figure 3 - Wind field analysis maps at 9:19 am June 25 (left) and 9:50 am June 26 (right)
圖 3 - 6 月 25 日上午 9 時 19 分（左）及 26 日上午 9 時 50 分（右）之風場分析圖

Figure 4 - Steering flow chart at 8 am June 25
圖 4 - 6 月 25 日上午 8 時之駛流場分佈圖

Figure 5 - 500-hPa upper-level weather map at 8 am June 25
圖 5 - 6 月 25 日上午 8 時之 500 百帕高空天氣圖

Figure 6 - HKO's forecast track at 2 pm June 25
圖 6 - 6 月 25 日下午 2 時之香港天文台預測路徑圖

Figure 7 - Radar image at 2:30 pm June 25
圖 7 - 6 月 25 日下午 2 時 30 分之雷達圖

Figure 8 - Daily rainfall distribution map for June 26
圖 8 - 6 月 26 日之雨量分佈圖

Winds Recorded at Reference Stations 參考站所錄得的風速

The following table lists the maximum 10-minute average (sustained) wind speed recorded while tropical cyclone signals were in force. In some occasions, it is possible that the strongest winds were not recorded when the highest signal was in force.

下表列出各站於熱帶氣旋警告信號生效時所錄得的最高 10 分鐘平均（持續）風速，留意此風速不一定於最高信號生效期間錄得。

Charts and Figures 各項數據

Table 1: Track data from HKWW:
表一 : 香港天氣觀測站之路徑資料

Table 2: Maximum gust and hourly average wind speed recorded in Hong Kong from HKO:
表二 : 香港天文台公佈的各站最高每小時平均風力和陣風數據 (英文)

Table 3: Rainfall (in millimetres) contributed by 03W from HKO (figures in brackets are based on incomplete hourly data):
表三 : 香港天文台公佈的各站雨量資料 (英文) (方括號內之數據由不完整之每小時資料擷取)

Last Accessed 最近訪問日期: Thu Jun 11 2026 11:24:30 HKT
Last Modified 最近修訂日期: Sat Apr 18 2026