TROPICAL CYCLONES IN 2012

SIX-HOURLY POSITION AND INTENSITY DATA OF SUPER TYPHOON BOLAVEN (1215)

Month	Date	Time (UTC)	Intensity	Estimated minimum central pressure (hPa)	Estimated maximum surface winds (m/s)	Lat. °N	Long. °E
AUG	20	0000	T.D.	1000	13	16.8	141.9
		0600	T.D.	998	16	17.4	141.4
		1200	T.D.	996	16	17.9	141.3
		1800	T.S.	990	21	18.1	141.2
	21	0000	S.T.S.	985	25	18.2	140.8
		0600	S.T.S.	985	25	18.4	140.5
		1200	S.T.S.	980	28	18.9	140.1
		1800	S.T.S.	975	31	19.1	139.5
	22	0000	T.	970	33	19.2	138.8
		0600	T.	970	33	19.3	138.0
		1200	T.	965	36	19.5	137.3
		1800	T.	965	36	19.6	136.5
	23	0000	T.	960	39	19.8	135.8
		0600	T.	960	39	20.0	135.3
		1200	T.	955	41	20.2	134.4
		1800	T.	955	41	20.3	133.9
	24	0000	S.T.	950	43	21.1	133.7
		0600	S.T.	950	43	21.7	133.2
		1200	S.T.	950	43	22.3	133.0
		1800	S.T.	945	46	22.9	132.7
	25	0000	S.T.	940	49	23.5	132.1
		0600	S.T.	940	49	24.2	131.3
		1200	Super T.	930	52	24.4	130.7
		1800	Super T.	930	52	24.8	130.1
	26	0000	Super T.	930	52	25.3	129.5
		0600	Super T.	930	52	26.0	128.9
		1200	S.T.	930	49	26.6	128.0
		1800	S.T.	935	49	27.5	127.4
	27	0000	S.T.	940	46	28.4	126.8
		0600	S.T.	945	43	29.9	126.0
		1200	T.	950	41	31.3	125.4
		1800	T.	955	36	33.0	125.1
	28	0000	T.	960	33	34.7	125.1
		0600	S.T.S.	965	31	36.4	124.6
		1200	S.T.S.	975	28	38.7	124.5
		1800	T.S.	980	23	41.8	125.9
	29	0000	T.S.	984	21	44.6	127.2
	Became Extratropical