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TC Watch / 熱帶氣旋 > Selected TC Review / 重要熱帶氣旋回顧 > 201622W (AERE 艾利) [Refresh 更新]

201622W (AERE 艾利) - Profile 檔案

(Issued on January 28, 2017)
(於 2017 年 1 月 28 日發出)

Brief profile of AERE | 艾利小檔案:

*AERE's estimated strength dropped to below 25 knots between October 10 and October 13.
*艾利的估計強度於 10 月 10 至 13 日期間下降至 25 節以下

TC signals for Hong Kong & Track 香港曾經生效的熱帶氣旋警告和路徑圖:

Table 表:

Signal 信號	Date and time 日期和時間	Distance from HK 與香港的距離	Predicted movement 預測移動方向和速度	Max. 10-min winds 中心最高十分鐘平均風速
	2016/10/06 (THU) 20:40 HKT	ESE 420 km	W at 14 km/h	65 km/h (35 knots, TS)
	2016/10/09 (SUN) 03:45 HKT	E 330 km	Slow-moving	75 km/h (40 knots, TS)

Figure 圖:

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 from HKO 天文台的熱帶氣旋路徑圖:

Past HKWW Bulletins on AERE 本站有關艾利的發佈

Please click here for bulletins on AERE. 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)

Tropical depression 22W formed just east of the Luzon Strait on October 5. It was initially moving west-northwest quickly along the southwestern periphery of the subtropical ridge towards the Luzon Strait. The system organized on October 6, although its low-level circulation centre remained exposed. The JMA upgraded it into tropical storm AERE at 2 am, while the HKO upgraded the storm later in the evening. Following a weakening of the ridge, AERE turned west and decelerate significantly in the South China Sea.

Around that time, AERE's divergence channels had started to improve and the storm gradually picked up strength. It turned to an almost complete standstill on October 7 as a ridge of high pressure developed off Indochina, placing the storm in a pressure col. AERE's convective cloud bands continued to develop and most agencies upgraded it into a severe tropical storm, with a notable exception of the HK Observatory. In the next two days, AERE drifted slowly to the northeast and later started to weaken due to an arriving surge of the northeast monsoon. AERE weakened into a tropical depression on October 10 as it turned southwest along the low-level background flow.

AERE weakened into an area of low pressure on October 11; its remnants drifted southwest without much development in the next two days. On October 13, it moved to a more favourable area of the South China Sea and convective activities started to grow. Strong winds were observed in its northern semicircle; the JTWC reinstated its tropical depression status that morning, retaining the storm number 22W. By that time, the subtropical ridge has moved into the South China Sea and 22W was in its southern periphery. 22W moved west steadily and made landfall in central Vietnam on October 14. Upon landfall, it weakened gradually into an area of low pressure later that day.

熱帶低氣壓 22W 於 10 月 5 日在呂宋海峽以東形成，初時沿副熱帶高壓脊西南部向西北偏西快速移動，趨向呂宋海峽一帶。該系統於 6 日逐漸組織起來，但其低層環流中心仍然外露。日本氣象廳於上午 2 時將其升格為熱帶風暴艾利，而香港天文台則於傍晚才作出升格。由於副高減弱，艾利於南海西移，移速明顯降低。

這時候，艾利的輻散通道改善，風暴逐漸增強。一高壓脊於 7 日在中南半島形成，令艾利處於鞍場並幾乎停留不動。由於艾利的對流雲帶繼續發展，氣象台大多將其升格為強烈熱帶風暴，但香港天文台並未跟隨。隨後兩日艾利向東北緩慢移動，後期因東北季候風到達而開始減弱，於 10 日減弱為熱帶低氣壓並開始沿低層流場向西南移。

艾利於 11 日減弱為一低壓區，其殘餘於隨後兩天繼續向西南飄移。至 13 日，它移至南海中較有利熱帶氣旋發展的區域，對流開始增多，北半圓錄得強風。聯合颱風警報中心於當天早上重新升格該系統為熱帶低氣壓，並保留風暴編號 22W。此時副高已移入南海，22W 於其南沿向西穩定移動，並於 14 日登陸越南中部。登陸後，艾利逐漸減弱，於當天較後時間演變為一低壓區。

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

Link to relevant HKO weather report bulletins: 6/10 7/10 8/10 9/10
香港天文台相關天氣報告連結：6/10 7/10 8/10 9/10

The HK Observatory issued the #1 Standby Signal at 8:40 pm October 6 when AERE was around 420 km east-southeast of Hong Kong and was moving west steadily in the South China Sea. Local winds were mainly coming in from the north but were not strong. There were some showers on October 7 and 8, and AERE was the closest to Hong Kong during the night of October 7-8 , passing at a distance of around 260 km. Occasional strong winds were observed in offshore areas and on high ground.

AERE started to move away from the territory in the latter part of October 8. As its threat reduced, the #1 Standby Signal was cancelled at 3:45 am October 9, when AERE was around 330 km east of Hong Kong. Although AERE turned southwest again on October 10, its size was too small to have any significant effect on the territory.

香港天文台於 10 月 6 日下午 8 時 40 分發出一號戒備信號，當時艾利位於香港東南偏東約 420 公里，於南海穩定西移。本港主要吹偏北風，風勢不大。10 月 7 至 8 日有零星驟雨；艾利於 7 日晚至 8 日凌晨最接近香港，於本港 260 公里外掠過，離岸及高地間中吹強風。

艾利於 8 日較後時間開始移離。隨著其威脅降低，天文台於 9 日上午 3 時 45 分取消一號戒備信號，當時艾利於香港以東約 330 公里。雖然艾利於 10 日轉向西南，但由於風暴較為細小，它對本港的影響輕微。

Image Gallery 圖片庫

Figure 1 - Forecast tracks from various official agencies in the morning of October 7
圖 1 - 10 月 7 日早上各官方氣象台之預測路徑

Figure 2 - Satellite image of AERE on October 7 (left) and 22W on October 13 (right)
圖 2 - 艾利於 10 月 7 日的衛星雲圖 (左) 及 22W 於 10 月 13 日的衛星雲圖 (右)

Figure 3 - Steering flow chart in the morning of October 8
圖 3 - 10 月 8 日早上的駛流圖

Figure 4 - Radar image at 8 am October 8. AERE's circulation could be seen near the southeastern edge of the scan area
圖 4 - 10 月 8 日上午 8 時之雷達圖，可見艾利的環流於掃描範圍的東南邊沿

Figure 5 - Wind field analysis on October 9 (left) and October 13 (right)
圖 5 - 10 月 9 (左) 及 13 日 (右) 之風場掃描圖

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

(Except for special cases, this section is not available for cyclones that only necessitated the Standby Signal 除非特別情況，否則此部只當氣旋令天文台發出三號或更高信號時提供)

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 AERE 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: Sun Sep 08 2024 12:48:43 HKT
Last Modified 最近修訂日期: Mon Jul 24 2023