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TROPICAL CYCLONES IN 2004

TABLE 4.6    

DURATION OF TROPICAL CYCLONE WARNING SIGNALS ISSUED IN HONG KONG : 1956-2004

Signal Number
of
occasions
Duration of each occasion Total duration per year
Mean Maximum Minimum Mean Maximum Minimum
h min h min h min h min h min h min
1 or higher 309 43 2 161 0 4 30 271 20 570 15 36 35
3 or higher 207 30 26 124 15 4 30 128 35 306 35 17 15
8 or higher 72 15 23 66 50 2 40 22 36 100 55 0 0
8 NW 20 6 1 15 45 1 30 2 27 18 0 0 0
8 SW 27 4 55 10 45 2 30 2 42 16 10 0 0
8 NE 54 8 4 35 35 2 35 8 53 40 20 0 0
8 SE 40 7 20 21 45 0 20 5 59 31 15 0 0
9 or higher 18 7 1 12 25 2 0 2 35 19 25 0 0
10 12 6 34 11 0 2 30 1 36 12 10 0 0