TROPICAL CYCLONES IN 2007

Table 4.6

Duration of tropical cyclone warning signals issued in Hong Kong : 1956 - 2007

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	322	42	59	161	0	4	30	266	13	570	15	36	35
				(Tilda, 1964)		(T.D.,2000)				(1964)		(1959)
3 or higher	213	30	10	124	15	4	30	123	34	306	35	15	5
				(Mary, 1960)		(T.D.,2000)				(1974)		(2004)
8 or higher	73	15	16	66	50	2	40	21	26	100	55	0	0
				(Mary, 1960)		(Wynne, 1984)				(1964)
8 NW	20	6	1	15	45	1	30	2	19	18	0	0	0
8 SW	28	4	59	10	45	2	30	2	41	16	10	0	0
8 NE	54	8	4	35	35	2	35	8	22	40	20	0	0
8 SE	40	7	20	21	45	0	20	5	38	31	15	0	0
9 or higher	18	7	1	12	25	2	0	2	26	19	25	0	0
				(York, 1999)		(Dujuan, 2003)				(1964)
10	12	6	34	11	0	2	30	1	31	12	10	0	0
				(York, 1999)		(Alice, 1961)				(1964)

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

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