TROPICAL CYCLONES IN 2004

Six-hourly position and intensity data are tabulated in this section for the following tropical cyclones in 2004 over the western North Pacific and the South China Sea (i.e. the area bounded by the Equator, 45°N, 100°E and 180° ).

Name of tropical cyclone
Tropical Depression of 14 - 16 February	Tropical Depression of 18 - 22 March
Typhoon Sudal (0401)	Typhoon Nida (0402)
Tropical Depression of 16 - 17 May	Tropical Storm Omais (0403)
Typhoon Conson (0404)	Severe Tropical Storm Chanthu (0405)
Typhoon Dianmu (0406)	Typhoon Mindulle (0407)
Typhoon Tingting (0408)	Tropical Storm Kompasu (0409)
Typhoon Namtheun (0410)	Tropical Depression of 27 July
Tropical Storm Malou (0411)	Typhoon Meranti (0412)
Typhoon Rananim (0413)	Tropical Storm Malakas (0414)
Typhoon Megi (0415)	Typhoon Chaba (0416)
Typhoon Aere (0417)	Typhoon Songda (0418)
Severe Tropical Storm Sarika (0419)	Tropical Storm Haima (0420)
Typhoon Meari (0421)	Typhoon Ma-On (0422)
Typhoon Tokage (0423)	Typhoon Nock-Ten (0424)
Typhoon Muifa (0425)	Tropical Depression Merbok (0426)
Typhoon Nanmadol (0427)	Tropical Storm Talas (0428)
Tropical Storm Noru (0429)

In this section, surface winds refer to wind speeds averaged over a period of 10 minutes given in the unit of m/s (1 m/s is about 1.94 knots or 3.6 km/h). Intensities of tropical cyclones are classified as follows:-

(a)	T.D.	- tropical depression
(b)	T.S.	- tropical storm
(c)	S.T.S.	- severe tropical storm
(d)	T.	- typhoon

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