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A June with distinct periods of showery and sunny weather
     The first three weeks of June 2022 were cloudy and showery. Most of the time for the rest of the month was sunny and very hot. Overall, the month was cloudier than usual. The mean amount of cloud in the month was 83 per cent, about 6 per cent above the normal of 77 per cent for June. The duration of bright sunshine in the month was 116.1 hours, about 20 per cent below the normal figure of 144.3 hours. The monthly mean temperature was 28.6 degrees, 0.3 degrees above the normal figure of 28.3 degrees. As for monthly rainfall, while more than 450 millimetres of rainfall were recorded over Tsuen Wan, Tai Po and Sai Kung Districts, the monthly rainfall recorded at the Observatory was only 349.2 millimetres, about 29 per cent below the normal of 491.5 millimetres. The accumulated rainfall recorded in the first half of the year was 1 054.5 millimetres, a deficit of about 3 per cent compared to the normal of 1 082.5 millimetres for the same period.
     Under the influence of the southwest monsoon, the weather of Hong Kong was hot with a mixture of sunshine, showers and thunderstorms on the first six days of the month. Showers were heavier over parts of the New Territories on June 3 with more than 50 millimetres of rainfall recorded over Tsuen Wan and Tai Po. Affected by an active trough of low pressure lingering over the coast of Guangdong, local weather turned unsettled with occasional heavy showers and squally thunderstorms from June 7 to 11. More than 200 millimetres of rainfall were generally recorded over the territory and rainfall even exceeded 300 millimetres over the eastern part of Hong Kong on these five days. The heavy rain on the morning of June 8 necessitated the issuance of the second Red Rainstorm Warning Signal in the year. There was serious flooding over some places in the New Territories and landslides were reported in Sai Kung on that day. A woman died after being washed away by flash floods in Wang Chung Stream, Tai Po, on the same day. Moreover, a waterspout was also spotted near Cheung Chau on the morning of June 8. 
     The trough of low pressure moved northwards gradually towards inland areas on June 12. Under the influence of an active southwesterly airstream, the weather was mainly cloudy with showers and a few squally thunderstorms at first on June 12. The showers were heavier over Chek Lap Kok and Tsuen Wan where more than 50 millimetres of rainfall were recorded in that morning. With the showers easing off on the afternoon of June 12, the weather became hot with sunny periods on June 13. 
     With the return of the trough of low pressure, showery weather with squally thunderstorms affected Hong Kong again from June 14 to 16. More than 40 millimetres of rainfall were recorded over most parts of territory and rainfall even exceeded 70 millimetres over Sai Kung and parts of Kowloon in these three days. Under the rain, the temperature at the Observatory dropped to a minimum of 24.0 degrees on June 15, the lowest of the month. Affected by a southerly airstream, there were sunny intervals and some showers in Hong Kong from June 17 to 21. 
     Dominated by an anticyclone aloft, apart from a few showers, mainly fine and very hot weather prevailed in Hong Kong during June 22 to 29. With plenty of sunshine on June 28, the maximum temperature at the Observatory soared to 34.4 degrees, the highest of the month. In addition, an area of low pressure over the central part of the South China Sea developed into a tropical depression on June 29. It was named Chaba and intensified into a tropical storm the next morning. With Chaba moving towards the coast of western Guangdong, there were squally showers and thunderstorms in Hong Kong on the last day of the month and winds strengthened gradually at night. More than 20 millimetres of rainfall were recorded over most parts of territory, and rainfall even exceeded 50 millimetres over Hong Kong Island, Kowloon and the eastern part of the New Territories that day.
     One tropical cyclone occurred over the South China Sea and the western North Pacific in June 2022.
     Details of issuance and cancellation of various warnings/signals in June are summarized in Table 1. Monthly meteorological figures and departures from normal for June are tabulated in Table 2.
Ends/Tuesday, July 5, 2022
Issued at HKT 16:30
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