2004 South Pacific and Australian region season

8 storms formed in the South Pacific and Australian region basin in 2004, from 16 December 2003 to 9 April 2004.

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Years2004
Ocean basin

Choosing a minimum category hides storms with no wind speed in the record. To see which storms have passed near you, search a town or ZIP code, or tap the map.

Key
  • Tropical depression Winds below 34 knots (39 mph)
  • Tropical storm 34 to 63 knots (39 to 73 mph)
  • Category 1 64 to 82 knots (74 to 95 mph)
  • Category 2 83 to 95 knots (96 to 110 mph)
  • Category 3 96 to 112 knots (111 to 129 mph), major
  • Category 4 113 to 136 knots (130 to 156 mph), major
  • Category 5 137 knots (157 mph) or more, major
  • Unknown intensity No wind speed in the record
  • Post-tropical Storm has become post-tropical (dashed line)

How to read the lines. Each line is the track of one storm, drawn through its six-hourly positions and coloured by its intensity at each point (the Saffir-Simpson scale), so a line changes colour as the storm strengthens or weakens. Tap a line for its details, or tap anywhere else to see which storms have passed nearby. Weaker storms appear as you zoom in. Hurricanes, typhoons and cyclones are the same kind of storm with different names in different oceans.

The 2004 season in numbers

The record holds 8 storms for the 2004 South Pacific and Australian region season, of which 7 had names.7 reached tropical storm strength (34 knots or more), 4 reached cyclone strength (category 1 or more) and 3 were major (category 3 or more).

  • 8storms
  • 7tropical storm strength or more
  • 4cyclone strength or more
  • 3major (category 3 to 5)
  • 87accumulated cyclone energy

Accumulated cyclone energy adds up the squared wind speed of every position of 34 knots or more, divided by 10,000. It is approximate here because the winds are 1-minute equivalents, and it is mostly useful for comparing seasons of one basin.

Strongest storms of 2004

  • Heta (2004)25 December 2003 to 12 January 2004, peak Category 5 (140 kt), 915 hPa
  • Fay (2004)12 March 2004 to 28 March 2004, peak Category 4 (120 kt), 910 hPa
  • Ivy (2004)21 February 2004 to 2 March 2004, peak Category 3 (105 kt), 935 hPa
  • Debbie (2004)16 December 2003 to 23 December 2003, peak Category 1 (65 kt), 970 hPa
  • Grace (2004)20 March 2004 to 26 March 2004, peak Tropical storm (57 kt), 985 hPa

All 8 storms of 2004

StormPeak
Debbie Category 1
Heta Category 5
Fritz Tropical storm
Ivy Category 3
Evan Tropical depression
Fay Category 4
Grace Tropical storm
Unnamed storm Tropical storm

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Other basins in 2004

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