Skip Content

Tropical Cyclones in 2017 > Figures

TROPICAL CYCLONES IN 2017
1.1 Locations of anemometers and tide gauge stations mentioned in this annual report

2.1 Monthly frequencies of the occurrence of tropical cyclones in the western North Pacific and the South China Sea in 2017
2.2 Tracks of the seven tropical cyclones affecting Hong Kong in 2017
2.3 Infra-red satellite imagery of Super Typhoon Lan (1721) at peak intensity at 8 a.m. on 21 October 2017

3.1.1a Track of Merbok on 11 – 13 June 2017
3.1.1b Track of Merbok near Hong Kong
3.1.1c Track of Merbok moving across Hong Kong
3.1.2 Rainfall distribution on 11 – 13 June 2017
3.1.3a 10-minute mean wind direction and speed recorded at various stations in Hong Kong at 8:20 p.m. on 12 June 2017
3.1.3b 10-minute mean wind direction and speed recorded at various stations in Hong Kong at 11:40 p.m. on 12 June 2017
3.1.4 Traces of mean sea-level pressure recorded at the Observatory Headquarters and Waglan Island between 12 and 13 June 2017
3.1.5 Infra-red satellite imagery around 8 p.m. on 12 June 2017
3.1.6a Image of radar echoes at 9:36 p.m. on 12 June 2017
3.1.6b Image of radar echoes at 10 a.m. on 13 June 2017
3.1.7 A retaining wall at Tai Tam Road in Stanley collapsed under the heavy rain

3.2.1a Track of Roke on 21 – 23 July 2017
3.2.1b Track of Roke approaching Hong Kong
3.2.1c Track of Roke moving across Hong Kong
3.2.2 Rainfall distribution on 22 - 24 July 2017
3.2.3 10-minute mean wind direction and speed recorded at various stations in Hong Kong at 10 a.m. on 23 July 2017
3.2.4 10-minute mean wind direction and speed recorded at Tap Mun and Tai Mei Tuk between 9 a.m. to 11 a.m. on 23 July 2017
3.2.5 Trace of 10-minute wind speed at Tap Mun on the morning of 23 July 2017
3.2.6 Trace of mean sea-level pressure recorded at Ta Kwu Ling on 23 July 2017
3.2.7 Visible satellite imagery around 5 p.m. on 22 July 2017
3.2.8 Image of radar echoes at 5:00 a.m. on 23 July 2017

3.3.1a Track of Hato on 20 – 24 August 2017
3.3.1b Track of Hato near Hong Kong
3.3.2 Time series of the maximum sustained wind speed near the centre of Hato
3.3.3 Rainfall distribution on 22 - 24 August 2017
3.3.4a 10-minute mean wind direction and speed recorded at various stations in Hong Kong at 10 a.m. on 23 August 2017
3.3.4b 10-minute mean wind direction and speed recorded at various stations in Hong Kong at 11 a.m. on 23 August 2017
3.3.5 Traces of 10-minute wind speed at Cheung Chau, Hong Kong International Airport and North Point on 23 August 2017
3.3.6 Traces of mean sea-level pressure recorded at the Hong Kong Observatory, Cheung Chau and Hong Kong International Airport on 22 and 23 August 2017
3.3.7 Maximum sea level recorded at various tide stations in Hong Kong and flood reports on 23 August 2017
3.3.8 Traces of sea level and storm surge recorded at Quarry Bay, Tai Po Kau, and Tsim Bei Tsui on 22 and 23 August 2017
3.3.9 Visible satellite imagery around 11 a.m. on 23 August 2017
3.3.10 Image of radar echoes at 10:00 a.m. on 23 August 2017
3.3.11 Image of cloud top height estimated using radar data at 7 a.m. on 23 August 2017, overlaid with lightning locations during the past 30 minutes
3.3.12 The passage of Hato resulted in fallen trees in many parts of the territory
3.3.13 High waves affected Hung Hom Pier during the passage of Hato
3.3.14 Glass curtain walls of several commercial buildings in Wan Chai and Central were shattered
3.3.15a Heng Fa Chuen was seriously flooded with sea water rushing into the estate
3.3.15b Sea water flowed into an underground car park in Heng Fa Chuen, submerging a number of private vehicles inside
3.3.15c Siu Sai Wan Sports Ground was flooded by sea water
3.3.16 Serious flooding in Tai O with water level reaching the chest high in some places
3.3.17 The cycle tracks and subways near Shing Mun River in Sha Tin and coastal area of Tolo Harbour were flooded
3.3.18 The surge of water level in Yuen Long Nullah and Shan Pui River resulted in flooding over the areas
3.3.19a Waterfront Promenade at Tseung Kwan O was damaged by sea waves
3.3.19b The fences near Cheung Chau Tung Wan were damaged by sea waves
3.3.20 A number of vessels ran aground about 30 km southwest of Hong Kong and a total of 39 crew members were rescued
3.3.21 Window panes of residential buildings in Macao were broken
3.3.22 Typhoon Committee Secretariat at Avenida de 5 de Outubro, Macao was damaged by storm surge
3.3.23 Serious flooding in Macao under the influence of storm surge

3.4.1a Track of Pakhar on 24 - 27 August 2017
3.4.1b Track of Pakhar near Hong Kong
3.4.2 Rainfall distribution on 26 - 28 August 2017
3.4.3 10-minute mean wind direction and speed recorded at various stations in Hong Kong at 7:00 a.m. on 27 August 2017
3.4.4 Traces of 10-minute wind speed recorded at Cheung Chau and Tai Mei Tuk on 26 and 27 August 2017
3.4.5 Traces of mean sea-level pressure recorded at the Observatory Headquarters and Cheung Chau on 26 and 27 August 2017
3.4.6 Infra-red satellite imagery around 5 a.m. on 27 August 2017
3.4.7a Image of radar echoes at 5:48 a.m. on 27 August 2017
3.4.7b Image of radar echoes at 7 a.m. on 28 August 2017
3.4.8 Fallen trees at Cheung Sha Wan Road near Lai Chi Kok

3.5.1a Track of Mawar on 31 August - 4 September 2017
3.5.1b Track of Mawar in the vicinity of Hong Kong
3.5.2 Rainfall distribution on 2 - 4 September 2017
3.5.3 10-minute mean wind direction and speed recorded at various stations in Hong Kong at 7:10 a.m. on 4 September 2017
3.5.4 Visible satellite imagery at 8:00 a.m. on 2 September 2017
3.5.5 Radar image at 7:00 a.m. on 4 September 2017

3.6.1 Track of the Tropical Depression on 23 - 25 September 2017
3.6.2 Rainfall distribution on 24 September 2017
3.6.3 Visible satellite imagery at 8:00 a.m. on 24 September 2017
3.6.4 Radar image at 10:12 a.m. on 24 September 2017

3.7.1 Track of Khanun on 12 - 16 October 2017
3.7.2 Rainfall distribution on 14 - 16 October 2017
3.7.3 10-minute mean wind direction and speed recorded at various stations in Hong Kong at 2:50 p.m. on 15 October 2017
3.7.4 Traces of 10-minute wind speed recorded at Cheung Chau Beach and Tai Mei Tuk on 15 October 2017
3.7.5 Visible satellite imagery around 8 a.m. on 15 October 2017
3.7.6 Image of radar echoes at 10:00 a.m. on 15 October 2017
3.7.7 Fallen galvanized iron sheets damaged two private cars in Sham Shui Po