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TC Watch / 熱帶氣旋 > Selected TC Review / 重要熱帶氣旋回顧 > 201620W (MEGI 鮎魚) [Refresh 更新]

201620W (MEGI 鮎魚) - Profile 檔案

(Issued on October 23, 2016)
(於 2016 年 10 月 23 日發出)

Brief profile of MEGI | 鮎魚小檔案:

JTWC number 聯合颱風警報中心 (JTWC) 號碼 20W
International number 國際編號 1617
Period of existence 生存時期 (JTWC) 2016/09/23 08 HKT - 2016/09/28 14 HKT
Lifetime 壽命 (JTWC) 5.25 days 日
Maximum 1-minute wind (JTWC) JTWC 一分鐘平均最高中心風速 110 knots 節 (Category 3 Typhoon 三級颱風)
Minimum pressure (JTWC) JTWC 最低氣壓 941 hPa 百帕
Highest TC signal by HKO (if applicable)
香港天文台發出最高熱帶氣旋警告信號
1 (Standby Signal 戒備信號)
Closest point of approach by HKO (if applicable)
香港天文台所示之最接近距離 (如適用)
NE 380 km (real-time warning 實時報告) / NE 390 km (TC report 熱帶氣旋報告)
Time of closest approach by HKO (if applicable)
香港天文台所示之最接近時間 (如適用)
2016/09/28 15 HKT (real-time warning 實時報告) / 14 HKT (TC report 熱帶氣旋報告)
Lowest pressure recorded at HKO (if applicable)
香港天文台錄得的最低氣壓 (如適用)
997.2 hPa 百帕 (2016/09/28 15:35 HKT)

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
2016/09/28 (WED) 08:40 HKT NE 510 km WNW at 20 km/h 105 km/h (55 knots, STS)
2016/09/28 (WED) 23:10 HKT NNE 420 km NW at 12 km/h 55 km/h (30 knots, TD)

Figure 圖:

(Track figure courtesy of Lorenzo. Data from HKO. 鳴謝 Lorenzo 提供路徑圖,資料取自天文台)

TC Track

Percentile Ranks 百分等級:

Percentile ranks are only available for cyclones that necessitated at least the No. 3 Strong Wind Signal. 百分等級只適用於曾令天文台發出三號強風信號 (或更高) 的熱帶氣旋。

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

TC track from HKO 天文台的熱帶氣旋路徑圖:

TC Track

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 depression formed west of Guam on September 22-23. The JTWC assigned the storm number 20W to this system in the morning of September 23; at the same time, the JMA upgraded the system into a tropical storm and named it MEGI. MEGI drifted north-northwest prior to its formation but was expected to move west-northwest steadily towards Taiwan due to a broad subtropical ridge in northwest Pacific firmly established south of Japan.

MEGI's convections were initially concentrated in its eastern and southern sides. However, with decent sea temperatures and low vertical wind shear, MEGI developed gradually and intensified into a severe tropical storm on September 24. The storm further intensified into a typhoon on September 25 and continued to move west-northwest to the east of the Luzon Strait. It developed a rather large banding eye prior to landfall on September 26-27, before deflecting slightly equatorward and making landfall near Hualien in the afternoon of September 27. It reached category 3 (severe typhoon) strength at landfall.

MEGI weakened quickly upon landfall; it briefly tracked west-southwest due to Taiwan's terrain but turned west-northwest as it crossed the Taiwan Strait on September 28. The storm made its second and final landfall near Quanzhou, Fujian as a marginal typhoon, after which it moved west inland. A weakness in the subtropical ridge caused MEGI to stagnate in Jiangxi, and it turned north before dissipating gradually on September 29.

一個熱帶低氣壓於 9 月 22 至 23 日在關島以西形成。聯合颱風警報中心於 9 月 23日早上對其給予風暴編號 20W,而日本氣象廳則於同一時間將其升格為熱帶風暴,並命名為鮎魚。鮎魚形成之前向西北偏北移動,但受日本以南的廣闊副熱帶高壓脊影響,預料鮎魚向西北偏西移動,大致趨向台灣。

最初鮎魚的對流集中在風暴東及南方。但是,受惠於較高海溫及低垂直風切變,鮎魚逐漸發展並於 24 日增強為強烈熱帶風暴,繼而於 25 日增強為颱風。風暴於呂宋海峽以東繼續向西北偏西移動。鮎魚於 26 至 27 日發展出一較大雲捲風眼,於 27 日下午略為北偏後於花蓮一帶登陸,登陸時達三級颱風 (強颱風) 強度。

登陸後鮎魚快速減弱;受台灣地形影響,鮎魚短暫向西南偏西移動。風暴於 28 日橫過台灣海峽,並回復其西北偏西之路徑。鮎魚於福建泉州一帶作最後一次登陸,當時強度為颱風下限。由於副熱帶高壓脊出現一弱點,鮎魚於江西停滯,隨後轉向偏北移動,並於 29 日逐漸消散。

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

Link to relevant HKO weather report bulletins: 28/9
香港天文台相關天氣報告連結28/9

Subsidence associated with MEGI affected Hong Kong on September 26 and 27. North to northwesterly winds prevailed and resulted in hazy weather on both days. It was very hot on September 27; the maximum air temperature recorded at the HK Observatory was 34.9 degrees, and many places registered temperatures in excess of 35 or even 36 degrees.

As MEGI came closer, northwesterly winds strengthened and the Observatory issued the #1 Standby Signal at 8:40 am September 28, when the storm was around 510 km from the territory (adjusted to 490 km in the TC report). Strong winds were recorded briefly in several locations when the Standby Signal was in force, including Cheung Chau and Lau Fau Shan, two of the eight reference stations. However, winds subsided later that evening as MEGI weakened inland. The Standby Signal was cancelled at 11:10 pm the same day when MEGI had weakened into a tropical depression and was situated around 420 km from Hong Kong. Precipitation was insignificant throughout.

鮎魚相關的下沉氣流於 9 月 26 及 27 日影響香港,本港普遍吹北至西北風,並有煙霞。27 日天氣酷熱,天文台錄得最高氣溫 34.9 度,多處更錄得 35 甚至 36 度以上的高溫。

隨著鮎魚靠近,西北風有所增強,天文台於 28 日上午 8 時 40 分發出一號戒備信號,當時鮎魚距離香港約 510 公里 (熱帶氣旋報告中修訂為 490 公里)。信號生效期間部分地區曾短暫錄得強風,包括八個參考測風站的其中兩個:長洲及流浮山。由於鮎魚於內陸減弱,本港風勢於晚間放緩。天文台於同日下午 11 時 10 分取消一號戒備信號,當時鮎魚已減弱為熱帶低氣壓,並距離香港約 420 公里。鮎魚靠近期間本港沒有明顯降雨。

Image Gallery 圖片庫

Figure 1 - Steering flow chart at 8 am September 25
圖 1 - 9 月 25 日上午 8 時之駛流場圖

Figure 2 - Forecast tracks from official agencies on September 25
圖 2 - 9 月 25 日各官方氣象台之預測路徑圖

Figure 3 - Wind field analysis at 9:46 am September 26
圖 3 - 9 月 26 日上午 9 時 46 分之風場分析圖

Figure 4 - Satellite image of MEGI just before landfall at Taiwan
圖 4 - 鮎魚於台灣登陸前之衛星雲圖

Figures 5 - Radar image of MEGI before landfall at Taiwan (left) and crossing Taiwan (right)
圖 5 - 鮎魚登陸台灣前 (左) 及橫過台灣時 (右) 之雷達圖

Figure 6 - Track forecast from the HKO showing MEGI's estimated 2m wave region covering Hong Kong
圖 6 - 香港天文台的路徑預測圖顯示鮎魚的兩米浪高範圍覆蓋本港

Figure 7 - Satellite image of MEGI as it weakened on land
圖 7 - 鮎魚於內陸減弱時之衛星雲圖

Figure 8 - Wind speed time series at Lau Fau Shan on September 27-28
圖 8 - 9 月 27 至 28 日流浮山之風速時間序列圖

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

YYMMDDZZ Lat Long Wind
16092300 155N1401E 030
16092306 163N1394E 035
16092312 166N1382E 040
16092318 169N1376E 050
16092400 174N1365E 055
16092406 183N1353E 060
16092412 185N1339E 065
16092418 189N1328E 075
16092500 192N1316E 085
16092506 198N1303E 090
16092512 201N1294E 090
16092518 205N1283E 090
16092600 207N1274E 090
16092606 214N1262E 095
16092612 219N1253E 100
16092618 223N1243E 105
16092700 231N1234E 110
16092706 240N1216E 105
16092712 237N1205E 090
16092718 246N1194E 075
16092800 251N1183E 060
16092806 249N1168E 050
16092812 252N1163E 040
16092818 258N1159E 030

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)

Station
Maximum Gust
Maximum Hourly Mean Wind
Direction
Speed (km/h)
Date/Month
Time
Direction
Speed (km/h)
Date/Month
Time
Bluff Head (Stanley)
NW
36
28/9
12:41
NW
16
28/9
11:00
Central Pier
W
51
28/9
12:51
W
31
28/9
13:00
W
51
28/9
12:52
Cheung Chau
WNW
62
28/9
16:58
WNW
34
28/9
10:00
Cheung Chau Beach
W
54
28/9
17:00
WNW
25
28/9
12:00
WNW
25
28/9
13:00
Green Island
NW
58
28/9
11:37
NNW
23
28/9
21:00
Hong Kong International Airport
NW
47
28/9
21:23
NNW
36
28/9
22:00
Kai Tak
W
54
28/9
12:51
WNW
30
28/9
13:00
King's Park 
W
47
28/9
12:49
WNW
16
28/9
16:00
Lau Fau Shan
WNW
56
28/9
11:20
WNW
40
28/9
12:00
WNW
56
28/9
18:05
Ngong Ping
NW
63
28/9
19:57
NW
31
28/9
21:00
NNW
63
28/9
19:58
North Point
WNW
49
28/9
12:59
W
31
28/9
13:00
Peng Chau
NW
63
28/9
08:52
WNW
45
28/9
09:00
Ping Chau
WNW
36
28/9
18:38
WNW
14
28/9
09:00
Sai Kung 
W
40
28/9
10:56
WNW
19
28/9
12:00
WNW
40
28/9
11:04
Sha Chau
NNW
49
28/9
21:28
NNW
25
28/9
22:00
Sha Lo Wan
WNW
38
28/9
20:32
W
13
28/9
11:00
W
13
28/9
21:00
Sha Tin
W
31
28/9
13:39
N
9
28/9
09:00
Shek Kong
W
34
28/9
13:44
W
14
28/9
14:00
Star Ferry (Kowloon)
WNW
49
28/9
18:41
WNW
31
28/9
13:00
Ta Kwu Ling 
WNW
31
28/9
16:24
W
13
28/9
17:00
Tai Mei Tuk
WNW
56
28/9
15:19
WNW
27
28/9
09:00
Tai Mo Shan
WNW
83
28/9
13:57
WNW
59
28/9
14:00
Tai Po Kau
W
45
28/9
13:02
WNW
23
28/9
12:00
Tap Mun
W
56
28/9
10:56
WNW
38
28/9
09:00
Tate's Cairn 
WNW
68
28/9
20:34
WNW
38
28/9
15:00
Tseung Kwan O
W
27
28/9
10:55
NNW
9
28/9
13:00
NW
27
28/9
14:36
Tsing Yi Shell Oil Depot
WNW
41
28/9
10:29
WNW
27
28/9
11:00
Tuen Mun Government Offices
WNW
54
28/9
12:00
WNW
16
28/9
13:00
Waglan Island
WNW
51
28/9
17:34
WNW
34
28/9
18:00
Wetland Park
NW
41
28/9
14:11
NW
16
28/9
10:00
NW
16
28/9
19:00
Wong Chuk Hang
W
43
28/9
19:22
W
16
28/9
20:00

Table 3: Rainfall (in millimetres) contributed by MEGI 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)

Station 28 Sep
Total Rainfall (mm)
Hong Kong Observatory (HKO)
0.0
0.0
Hong Kong International Airport (HKA)
0.0
0.0
Cheung Chau (CCH)
[0.0]
[0.0]
H23 Aberdeen
0.0
0.0
N05 Fanling
0.0
0.0
N13 High Island
0.0
0.0
K04 Jordan Valley
0.0
0.0
N06 Kwai Chung
0.0
0.0
H12 Mid Levels
0.0
0.0
N09 Sha Tin
0.0
0.0
H19 Shau Kei Wan
0.0
0.0
SEK Shek Kong
[0.0]
[0.0]
K06 So Uk Estate
0.0
0.0
R31 Tai Mei Tuk
0.0
0.0
R21 Tap Shek Kok
0.0
0.0
N17 Tung Chung
0.0
0.0

Last Accessed 最近訪問日期: Fri Jun 21 2019 07:49:23 HKT
Last Modified 最近修訂日期: Sun Oct 23 2016

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