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Definition and Precautions AMBER rainstorm signal This signal means: Heavy rain has fallen or is expected to fall generally over Hong Kong, exceeding 30 millimetres in an hour, and is likely to continue. [1] The AMBER signal (Chinese: 黃色暴雨警告) gives alert about potential heavy rain that may develop into RED or BLACK signal situations ...
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
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 ...
Hong Kong has similar official five-level definition warning signals, which use descriptions of winds taken from the Beaufort Scale. The Hong Kong levels, however, do not correspond to the Beaufort Scale, which has 12 levels. The lowest level of the Hong Kong system No. 1 does not correspond to any wind strength. Instead, it is an alert based ...
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.
Particularly dangerous situation flash flood warning FFW – Issued within the initial flash flood warning or as a complete re-issuance of the previously issued warning, this indicates widespread, life-threatening flash flooding—caused by excessive rainfall, ice jams or imminent dam failures—has been indicated by Doppler weather radar ...
A weather warning generally refers to an alert issued by a meteorological agency to warn citizens of approaching dangerous weather. A weather watch , on the other hand, typically refers to an alert issued to indicate that conditions are favorable for the development of dangerous weather patterns, although the dangerous weather conditions ...
A watch or warning bearing the phrase is referred to as a PDS watch or PDS warning. First used by the Storm Prediction Center (SPC), a national guidance center of the National Weather Service , for tornado watches , the phrase was later applied to other severe weather watches and warnings by the agency's regional forecast offices.