Bookmark and Share

TC Watch / 熱帶氣旋 > Selected TC Review / 重要熱帶氣旋回顧 > 201827W (BARIJAT 百里嘉) [Refresh 更新]

201827W (BARIJAT 百里嘉) - Profile 檔案

(First draft issued on September 29, 2018; final version issued on November 16, 2018)
(初稿於 2018 年 9 月 29 日發出,最後版本於 2018 年 11 月 16 日上載)

Brief profile of BARIJAT | 百里嘉小檔案:

JTWC number 聯合颱風警報中心 (JTWC) 號碼 27W
International number 國際編號 1823
Period of existence 生存時期 (JTWC) 2018/09/10 02 HKT - 2018/09/14 02 HKT
Lifetime 壽命 (JTWC) 4.00 days 日
Maximum 1-minute wind (JTWC) JTWC 一分鐘平均最高中心風速 40 knots 節 (Tropical Storm 熱帶風暴)
Minimum pressure (JTWC) JTWC 最低氣壓 1000 hPa 百帕
Highest TC signal by HKO
香港天文台發出最高熱帶氣旋警告信號
3 (Strong Wind Signal 強風信號)
Closest point of approach by HKO
香港天文台所示之最接近距離
S 150 km (real-time warning 實時報告 / TC report 熱帶氣旋報告)
Time of closest approach by HKO
香港天文台所示之最接近時間
2018/09/12 16 HKT (real-time warning 實時報告) / 15 HKT (TC report 熱帶氣旋報告)
Lowest pressure recorded at HKO
香港天文台錄得的最低氣壓
1006.0 hPa 百帕 (2018/09/12 16:49 HKT)

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
2018/09/11 (TUE) 10:40 HKT ESE 460 km W at 12 km/h 65 km/h (35 knots, TS)
2018/09/12 (WED) 12:20 HKT SSE 170 km W at 18 km/h 65 km/h (35 knots, TS)
2018/09/13 (THU) 04:10 HKT SW 300 km W at 22 km/h 85 km/h (45 knots, TS)
2018/09/13 (THU) 07:40 HKT WSW 360 km W/WNW at 22 km/h 85 km/h (45 knots, TS)

Percentile Ranks 百分等級:

Percentile rank among storms with #3 Signal (at compilation of this review)*:
發出三號信號之風暴中的百分等級 (編寫此回顧之時)*:

*This measures the relative wind strength in Hong Kong caused by this storm compared with others that share the same signal. 指標顯示此風暴相對於其他發出同樣信號的風暴為香港帶來之風力強度

For more information, please refer to Wind Speed Data for TCs that Have Affected Hong Kong. 更多資訊載於 影響香港氣旋之風速數據

  Overall:
總計:
24
  Moderately weak
中等偏弱
Component Ranks 分部等級
  Reference stations:
參考站:
6
  Weak
  Victoria Harbour:
維多利亞港:
47
  Moderate
中等
  Urban:
市區:
18
  Weak
  Offshore & high ground
離岸和高地:
25
  Moderately weak
中等偏弱

Cyclones that attained similar rating (with signal #3): 01W (2016), JEBI (2013), MEGI (2010), FANAPI (2010), CHANTHU (2010)
相近級別之熱帶氣旋 (三號信號):01W (2016)、飛燕 (2013)、鮎魚 (2010)、凡亞比 (2010)、燦都 (2010)

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 tracks from HKO 天文台的熱帶氣旋路徑圖:

TC Track

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 patch of convections persisted off the southeastern Taiwan coast on September 9. The JTWC issued a tropical cyclone formation alert at 2 am September 9, and upgraded the system into tropical depression 27W a day later. Affected by a subtropical ridge in southern China, 27W was forecast to move west-southwest to west across the northern part of the South China Sea. However, there is some uncertainty on the speed of movement and the location of landfall among the numerical models.

27W moved west-southwest soon after formation and avoided a landfall at southern Taiwan. The HKO upgraded it into a tropical depression at 11 am September 10, while the JTWC upgraded 27W into tropical storm status at 2 pm as it continued to develop. Tight banding could be seen around 27W's centre, but convective activities dwindled that night. The JMA eventually made the upgrade at 8 am September 11 and named the system BARIJAT.

BARIJAT stopped dipping southwards in the afternoon of September 11. It passed just south of Dongsha near midnight September 12, while remaining as a minimal tropical storm. BARIJAT gained some latitude on September 12 as it passed some 150 km south of the Pearl River Estuary. The storm had a few rounds of convective bursts towards the morning of September 13. Using the 2-minute average wind speed standard, the NMC of China upgraded BARIJAT into a severe tropical storm before it made landfall near Zhanjiang, Guangdong just after 8 am. The other agencies did not follow suit and maintained their estimation at tropical storm strength.

Being a small system, BARIJAT weakened rapidly after landfall. Its deep convections almost evaporated completely within the next 12 hours. The JMA stopped issuing warning bulletins at 2 pm, while the other agencies also quickly downgraded BARIJAT into a tropical depression. BARIJAT weakened into a low pressure area later that afternoon in southern Guangxi.

一股對流雲團於 9 月 9 日盤據於台灣東南對開海域。聯合颱風警報中心於 9 日上午 2 時對其發出熱帶氣旋形成警報,並於一日後將該系統升格為熱帶低氣壓 27W。由於華南有一道副熱帶高壓脊,當時預料 27W 會向西南偏西至西移動,橫過南海北部,但數值預報模式對其移動速度及登陸地點較不確定。

27W 形成後不久向西南偏西移動,避過台灣南部陸地。香港天文台於 10 日上午 11 時將 27W 升格為熱帶低氣壓,而隨著 27W 繼續發展,聯合颱風警報中心於下午 2 時進一步將其升格為熱帶風暴。27W 中心附近對流緊密,但當晚對流活動有所減少。日本氣象廳最終於 11 日上午 8 時作出升格,並給予風暴名稱百里嘉。

百里嘉 11 日下午停止南移,並於 12 日午夜時份以熱帶風暴下限強度於東沙以南近距離掠過。百里嘉的緯度於 12 日有所增加,並於珠江口以南約 150 公里距離外掠過。13 日近早上時份,百里嘉出現數次對流爆發;使用兩分鐘平均風速標準的中國中央氣象台於百里嘉登陸前將其升格為強烈熱帶風暴,而百里嘉於上午 8 時過後登陸廣東湛江一帶。其他氣象台並沒有跟隨,並維持對其熱帶風暴強度的估計。

由於百里嘉尺度較小,它登陸後快速減弱,深層對流於 12 小時內幾乎完全蒸發。日本氣象廳於下午 2 時停止對其作出發佈,而其他氣象台亦很快將百里嘉降格為熱帶低氣壓。當天下午較後時間,百里嘉於廣西南部減弱為低壓區。

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

Link to relevant HKO weather report bulletins: 11/912/913/9
香港天文台相關天氣報告連結11/912/913/9

In anticipation of the potentially disastrous impact of tropical cyclone MANGKHUT which was forecast to come a few days after BARIJAT's approach, the general public did not pay much attention to this midget cyclone.

Locally, it was fine and very hot on September 11. The HKO issued the #1 Standby Signal at 10:40 am, when BARIJAT was about 460 km east-southeast of Hong Kong. As BARIJAT moved closer, winds strengthened in the small hours of September 12 and the HKO indicated that the #3 Strong Wind Signal would be considered during the day. This was later refined to after 10 am and further to between 11 am and 1 pm. The #3 Signal was finally issued at 12:20 pm; BARIJAT was located around 170 km south-southeast of Hong Kong at that time. Within the next couple of hours, strong force winds were limited to offshore areas and on high ground, such as Cheung Chau, Green Island, Peng Chau, Tai Mei Tuk, Tap Mun and Tate's Cairn. A short period of gales was observed at Waglan Island between 2 and 3 pm. There were also a few squally showers during the afternoon and nighttime of September 12. However, as BARIJAT had little convective activities in its northern semicircle, the rain did not last long and only a few millimetres of precipitation was recorded over parts of the territory.

BARIJAT came closest to Hong Kong near 3 pm September 12, when it passed at a distance of around 150 km to the south. As BARIJAT moved away, winds in Hong Kong moderated during the night. The HKO replaced the #3 Signal by the #1 Standby Signal at 4:10 am September 13; except at Waglan Island, strong force winds were almost non-existent at this point. Finally, the #1 Signal was cancelled at 7:40 am, when BARIJAT was about 360 km west-southwest of the territory. The weather in Hong Kong improved quickly after BARIJAT's departure, and there were some periods of sunshine during the day.

由於預計百里嘉靠近後數天將有極具威脅的熱帶氣旋山竹侵襲,市民當時普遍不太重視此小型熱帶氣旋的發展。

本港方面,9 月 11 日大致天晴酷熱。香港天文台於上午 10 時 40 分發出一號戒備信號,當時百里嘉位於香港東南偏東約 460 公里。隨著百里嘉靠近,12 日凌晨時份風勢增強,天文台表示將於當日考慮改發三號強風信號,隨後將改發信號時間縮窄至上午 10 時後,繼而進一步表明於上午 11 時至下午 1 時間改發。最終三號信號於下午 12 時 20 分發出,百里嘉移至香港東南偏南約 170 公里處。隨後數小時,離岸及高地如長洲、青洲、坪洲、大美督、塔門及大老山吹強風,而橫瀾島於下午 2 至 3 時間曾短暫吹烈風。當日下午及晚間本港有幾陣狂風驟雨,但由於百里嘉北半圓對流欠奉,雨勢未能持續,本港部分地區當天只錄得數毫米雨量。

百里嘉於 12 日下午 3 時左右最接近香港,於香港以南約 150 公里處掠過。隨著百里嘉移離,本港風勢於晚間緩和。天文台於 13 日上午 4 時 10 分改發一號戒備信號,取代三號強風信號。除橫瀾島外,這時強風幾乎已經絕跡,而一號信號其後亦於上午 7 時 40 分取消,百里嘉此時已移至香港西南偏西約 360 公里處。百里嘉遠離後,香港天氣迅速改善,當日日間部分時間有陽光。

Image Gallery 圖片庫

Figure 1 - JTWC's forecast track at 2 am September 10
圖 1 - 9 月 10 日上午 2 時聯合颱風警報中心之預測路徑圖

Figure 2 - Forecast track from various official agencies on September 11
圖 2 - 9 月 11 日各官方氣象台之預測路徑

Figure 3 - Wind field scan at 9:25 am September 12
圖 3 - 9 月 12 日上午 9 時 25 分的風場掃描圖

Figure 4 - Satellite image of BARIJAT as it passed south of Hong Kong
圖 4 - 百里嘉於香港以南掠過時之衛星圖像

Figure 5 - Satellite image showing BARIJAT about to make landfall near Zhanjiang. Super Typhoon MANGKHUT can be seen crossing the Philippine Sea.
圖 5 - 百里嘉即將登陸湛江時之衛星雲圖,同時可見超級颱風山竹正橫過菲律賓以東海域

Figure 6 - Radar images at 3-hour intervals from 9 am September 12 to midnight September 13
圖 6 - 9 月 12 日上午 9 時至 13 日午夜 12 時每三小時之雷達圖

Figure 7 - Local wind distribution maps at 4-hour intervals from 2 pm September 12 to 2 am September 13
圖 7 - 9 月 12 日下午 2 時至 13 日上午 2 時每四小時之本港風勢分布圖

Figure 8 - Wind speed time series at Cheung Chau, Green Island and Waglan Island (top to bottom) on September 12
圖 8 - 長洲、青洲及橫瀾島 (上至下) 於 9 月 12 日之風速時間序列圖

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

Station
風速站
Max. 10-min avg. wind speed
最高十分鐘平均風速
Beaufort classification
蒲福氏風級分類
Chek Lap Kok 赤鱲角 40 km/h Fresh 清勁
Cheung Chau 長洲 45 km/h STRONG 強風
Kai Tak 啟德 29 km/h Moderate 和緩
Lau Fau Shan 流浮山 35 km/h Fresh 清勁
Sai Kung 西貢 38 km/h Fresh 清勁
Sha Tin 沙田 21 km/h Moderate 和緩
Ta Kwu Ling 打鼓嶺 19 km/h Moderate 和緩
Tsing Yi (SHL) 青衣蜆殼油庫 20 km/h Moderate 和緩

Number of stations recording at least STRONG force (force 6 - 7) winds: 1
Number of stations recording at least GALE force (force 8 - 9) winds: 0
Number of stations recording at least STORM force (force 10 - 11) winds: 0
Number of stations recording HURRICANE force (force 12) winds: 0

錄得 強風 (6 - 7 級) 或更高風速的站數: 1
錄得 烈風 (8 - 9 級) 或更高風速的站數: 0
錄得 暴風 (10 - 11 級) 或更高風速的站數: 0
錄得 颶風 (12 級) 風速的站數: 0

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
18090918 221N1225E 025
18091000 218N1219E 030
18091006 216N1213E 030
18091012 216N1210E 030
18091018 213N1198E 035
18091100 208N1184E 040
18091106 205N1180E 040
18091112 205N1174E 040
18091118 205N1165E 040
18091200 207N1154E 040
18091206 209N1145E 045
18091212 209N1135E 045
18091218 208N1123E 045
18091300 211N1106E 050
18091306 216N1094E 035
18091312 217N1082E 025

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) ENE 70 12/9 14:32 E 31 12/9 19:00
Central Pier E 62 12/9 17:44 E 38 12/9 16:00
E 38 12/9 17:00
Cheung Chau ESE 67 12/9 19:30 E 40 12/9 20:00
E 40 12/9 21:00
Cheung Chau Beach ENE 67 12/9 14:54 ENE 51 12/9 15:00
Green Island ENE 77 12/9 14:45 ENE 52 12/9 17:00
Hong Kong International Airport ENE 51 12/9 16:21 ENE 31 12/9 17:00
Kai Tak ESE 54 12/9 20:48 E 25 12/9 22:00
King's Park E 58 12/9 18:25 E 22 12/9 18:00
Lau Fau Shan ENE 51 12/9 14:34 ENE 30 12/9 20:00
North Point E 58 12/9 17:19 ENE 36 12/9 15:00
Peng Chau ENE 62 12/9 14:52 E 41 12/9 17:00
Ping Chau SE 31 12/9 12:41 SE 7 12/9 13:00
Sai Kung ENE 56 12/9 13:45 ENE 34 12/9 17:00
Sha Chau NE 49 12/9 12:24 E 25 12/9 15:00
E 25 12/9 19:00
Sha Lo Wan E 47 12/9 19:52 E 23 12/9 17:00
Sha Tin NE 49 12/9 13:30 NE 16 12/9 14:00
Shek Kong NE 49 12/9 14:25 E 22 12/9 22:00
Star Ferry (Kowloon) E 54 12/9 19:30 E 30 12/9 20:00
Ta Kwu Ling NE 38 12/9 16:55 ENE 14 12/9 14:00
Tai Mei Tuk ENE 63 12/9 14:05 ENE 47 12/9 14:00
Tai Mo Shan ESE 79 12/9 21:37 ESE 58 12/9 22:00
Tai Po Kau E 45 12/9 18:42 E 31 12/9 19:00
E 31 12/9 22:00
Tap Mun ENE 58 12/9 13:35 ENE 43 12/9 17:00
Tate's Cairn ENE 77 12/9 13:56 E 52 12/9 23:00
Tseung Kwan O E 51 12/9 15:34 NNE 14 12/9 10:00
Tsing Yi Shell Oil Depot SE 40 12/9 15:37 ESE 14 12/9 17:00
Tuen Mun Government Offices ESE 43 12/9 14:13 NNE 14 12/9 06:00
Waglan Island ENE 77 12/9 14:24 ENE 63 12/9 15:00
Wetland Park E 36 12/9 13:39 E 14 12/9 15:00
Wong Chuk Hang NE 58 12/9 18:01 ENE 22 12/9 18:00

Table 3: Rainfall (in millimetres) contributed by BARIJAT 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 11-Sep 12-Sep 13-Sep Total Rainfall
(mm)
Hong Kong Observatory (HKO) 0.0 Trace 2.5 2.5
Hong Kong International Airport (HKA) 0.0 2.1 0.3 2.4
Cheung Chau (CCH) 0.0 0.0 0.5 0.5
H23 Aberdeen 0.0 3.5 1.5 5.0
N05 Fanling 0.0 0.0 0.5 0.5
N13 High Island 0.0 0.5 1.5 2.0
K04 Jordan Valley 0.0 0.5 1.5 2.0
N06 Kwai Chung 0.0 1.5 1.0 2.5
H12 Mid Levels 0.0 1.0 1.5 2.5
N09 Sha Tin 0.0 0.5 5.0 5.5
H19 Shau Kei Wan 0.0 1.0 4.5 5.5
SEK Shek Kong 0.5 1.0 3.0 4.5
K06 So Uk Estate 0.0 1.5 1.0 2.5
R31 Tai Mei Tuk 0.0 0.0 0.0 0.0
R21 Tap Shek Kok 0.0 [0.0] 0.0 [0.0]
TMR Tuen Mun Reservoir 0.0 0.0 0.0 0.0

Last Accessed 最近訪問日期: Mon Aug 26 2019 03:01:54 HKT
Last Modified 最近修訂日期: Fri Nov 16 2018

觀看訪客統計報表 Web Traffic Statistics

Statistics