TROPICAL CYCLONES IN 2015

TABLE 4.6 Duration of tropical cyclone warning signals issued in Hong Kong: 1956-2015

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	366	42	55	161	0	4	30	261	47	570	15	36	35
				(Tilda, 1964)		(T.D., 2000)				(1964)		(1959)
3 or higher	244	29	26	124	15	4	5	119	41	306	35	15	5
				(Mary, 1960)		(T.D., 2006)				(1974)		(2004)
8 or higher	88	14	36	66	50	2	40	21	24	100	55	0	0
				(Mary, 1960)		(Wynne , 1984)				(1964)
8 NW	25	5	47	15	45	1	30	2	24	18	0	0	0
8 SW	32	4	56	10	45	2	0	2	38	16	10	0	0
8 NE	60	7	41	35	35	1	35	7	41	40	20	0	0
8 SE	50	7	32	21	45	0	20	6	16	31	15	0	0
9 or higher	21	6	54	12	25	2	0	2	25	19	25	0	0
				(York, 1999)		(Dujuan, 2003)				(1964)
10	13	6	17	11	0	2	30	1	22	12	10	0	0
				(York, 1999)		(Alice, 1961)				(1964)

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