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  2. Hong Kong rainstorm warning signals - Wikipedia

    en.wikipedia.org/wiki/Hong_Kong_rainstorm...

    The red and black signals were the second stage of the warning system based on actual rainfall levels recorded, and were issued to the public. Amber: More than 50 mm of rain is expected in the Hong Kong region within six hours. Red: Rainstorm has started and more than 50 mm of rain has been recorded over a wide area within the last hour or less ...

  3. 2023 Hong Kong rainstorm and floods - Wikipedia

    en.wikipedia.org/wiki/2023_Hong_Kong_rainstorm...

    Hong Kong Observatory (HKO) issued a flood warning for Northern New Territories at 7:50 pm. [7] Heavy rainfall then spread to the entire territory, forcing the HKO to issue the Amber rainstorm signal, and later the Red signal in less than half an hour. At 11:05 pm, the highest warning level, Black rainstorm signal, was issued due to worsening ...

  4. Storm warning - Wikipedia

    en.wikipedia.org/wiki/Storm_warning

    In US maritime warning flag systems, a red square flag with a black square taking up the middle ninth of the flag is used to indicate a storm warning (the use of two such flags denotes a hurricane force wind warning or a hurricane warning). The same flag as a storm warning is used to indicate a tropical storm warning.

  5. Hong Kong paralyzed by flash flooding after heaviest rainfall ...

    www.aol.com/hong-kong-hit-widespread-flash...

    The extreme conditions caught many residents by surprise and came just days after Hong Kong was lashed by its strongest typhoon in five years.

  6. Typhoon Haikui (2023) - Wikipedia

    en.wikipedia.org/wiki/Typhoon_Haikui_(2023)

    It was the first time the warning was issued in two years. [16] It caused three fatalities. The torrential rainfall continued overnight and into the morning of 8 September, gradually subsiding by afternoon. The Black Rainstorm signal lasted over 16 hours, the longest duration ever since the rainstorm warning system was implemented in 1992.

  7. Quantitative precipitation forecast - Wikipedia

    en.wikipedia.org/wiki/Quantitative_precipitation...

    The Hong Kong Observatory generates short term rainstorm warnings for systems which are expected to accumulate a certain amount of rainfall per hour over the next few hours. They use three levels of warning. The amber warning indicates that a rainfall intensity of 30 millimetres (1.2 in) per hour is expected.

  8. 2008 June Hong Kong rainstorm - Wikipedia

    en.wikipedia.org/wiki/2008_June_Hong_Kong_Rainstorm

    An Amber rainstorm signal was issued at 05:15, and it escalated to Red at 05:55. 112mm, 101mm, and 86mm of rain were recorded at the Eastern, Southern, and Sai Kung Districts respectively. The Hong Kong Observatory eventually issued a Black rainstorm signal at 06:40 and it was sustained for 4 hours and 20 minutes.

  9. Black Rain - Wikipedia

    en.wikipedia.org/wiki/Black_Rain

    Black rainstorm signal, the third level of Hong Kong rainstorm warning signals; Schwarzer Regen (lit. Black Rain), a fictional exoskeleton in the Japanese light novel series Infinite Stratos; Black Reign (disambiguation) Dark Rain, The Outer Limits (1995 TV series) episode