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    Tropical Cyclones in 2021 > Table 4.8.1

    TROPICAL CYCLONES IN 2021

    Table 4.8.1    Rainfall associated with each tropical cyclone that came within 600 km of Hong Kong in 2021

    Tropical Cyclone
    Name
    Period when tropical cyclone within 600 km of Hong Kong
    Rainfall at
    the Hong Kong Observatory (mm)
    T1
    Date/
    Month
    Time*
    T2
    Date/
    Month
    Time*
    (i)
    within
    600 km of
    Hong Kong
    (T1 一> T2)
    (ii)
    24-hour period
    after T2
    (iii)
    48-hour period
    after T2
    (iv)
    72-hour period
    after T2
    (i) + (iv)
    Total
    (T1 一> T2 + 72 hours)
    Tropical Storm Choi-wan #" 3 / 6 2200 4 / 6 1500 7.5 Trace Trace Trace 7.5
    Tropical Storm Koguma 11 / 6 1400 12 / 6 0600 40.9 23.0 23.3 23.4 64.3
    Tropical Depression 7 / 7 0100 7 / 7 0800 11.4 0.3 1.8 1.8 13.2
    Typhoon Cempaka 18 / 7 2000 22 / 7 1500 242.3 0.0 26.5 35.4 277.7
    Tropical Storm Lupit 2 / 8 2000 6 / 8 1800 119.7 1.0 4.1 40.1 159.8
    Tropical Storm Lionrock 8 / 10 1100 10 / 10 0200 340.3 27.7 27.7 28.7+ 369.0
    Typhoon Kompasu 12 / 10 1000 13 / 10 1900 56.2+ 15.0 19.6 19.6 75.8
    Super Typhoon Rai 20 / 12 1200 21 / 12 1100 11.2 0.6 0.8 3.1 14.3
    Total                 980.6

    * Hong Kong Time （UTC + 8 hours）.
    # Tropical cyclone without issuing of tropical cyclone warning signal in Hong Kong.
    T1 - The time when a tropical cyclone was first centred within 600 km of Hong Kong.
    T2 - The time when a tropical cyclone was dissipated within or moved outside 600 km of Hong Kong.
    + Rainfall amount of Typhoon Kompasu overlapped the rainfall amount of Tropical Storm Lionrock by 1.0 mm.

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