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Tropical Cyclones in 2023 > Table 4.6

Tropical Cyclones in 2023

Table 4.6    Duration of tropical cyclone warning signals issued in Hong Kong : 1956 – 2023

Signal Number of occasions Duration of each occasion Total duration per year
Mean
(h min)		 Maximum
(h min)		 Minimum
(h min)		 Mean
(h min)		 Maximum
(h min)		 Minimum
(h min)
1 or higher 417 43   9 161   0
(Tilda, 1964) 		4   30
(T.D., 2000)		 264   35 570   15
(1964)		 36   35
(1959)
3 or higher 280 29   31 124   15
(Mary, 1960) 		4   5
(T.D., 2006)		 121   33 306   35
(1974)		 15   5
(2004)
8 or higher 107 14   54 66   50
(Mary, 1960)		 2   40
(Wynne, 1984)		 23   27 100   55
(1964)		 0   0
8 NW 31 6   10 15   45 1   30 2   49 18   0 0   0
8 SW 35 4   58 10   45 2   0 2   33 16   10 0   0
8 NE 73 7   49 35   35 1   35 8    23 40   20 0   0
8 SE 60 7   57 22   0 0   20 7   1 31   30 0   0
9 or higher 26 7   3 12   25
(York, 1999)		 2   0
(Dujuan, 2003)		 2   42 19   25
(1964)		 0   0
10 16 6   30 11   0
(York, 1999) 		2   30
(Alice, 1961)		 1   32 12   10
(1964)		 0   0

Note: ( ) are the years and the names of the tropical cyclones which created the record.