TROPICAL CYCLONES IN 2006

TABLE 4.6

DURATION OF TROPICAL CYCLONE WARNING SIGNALS ISSUED IN HONG KONG : 1956-2006

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	319	43	7	161	0	4	30	269	44	570	15	36	35
				(Tilda, 1964)		(T.D.,2000)				(1964)		(1959)
3 or higher	211	30	21	124	15	4	30	125	34	306	35	15	5
				(Mary, 1960)		(T.D.,2000)				(1974)		(2004)
8 or higher	72	15	23	66	50	2	40	21	43	100	55	0	0
				(Mary, 1960)		(Wynne, 1984)				(1964)
8 NW	20	6	1	15	45	1	30	2	21	18	0	0	0
8 SW	27	4	55	10	45	2	30	2	36	16	10	0	0
8 NE	54	8	4	35	35	2	35	8	32	40	20	0	0
8 SE	40	7	20	21	45	0	20	5	45	31	15	0	0
9 or higher	18	7	1	12	25	2	0	2	29	19	25	0	0
				(York, 1999)		(Dujuan, 2003)				(1964)
10	12	6	34	11	0	2	30	1	33	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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