The 2004 season

Cyclone Ivy (2004)

Cyclone Ivy reached Category 3 in the South Pacific between February 21, 2004 and March 2, 2004, with a lowest pressure of 938 mb, and made landfall.

Track and intensity

The whole track of Cyclone Ivy, colored by strength, with the other storms of the 2004 season in the same basin behind it, and its wind and pressure hour by hour. Every fix is in the track table below.

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The storm

Basin
South Pacific
Dates
February 21, 2004 to March 2, 2004
Peak strength
Category 3, 105 kt (121 mph)
Lowest pressure
938 mb (27.70 inHg)
Landfall
Yes
Accumulated cyclone energy
20.0
Tropical-storm-force wind reached
230 nmi (426 km, 265 mi) from the center at its widest
Eyewall radius at its peak
10 nmi (19 km, 12 mi)
Overall size
200 nmi (370 km, 230 mi) to the outermost closed isobar
Fastest the center moved
44 kt (51 mph)
Identifier
SH132004

Deaths and damage

No source this site reads carries a casualty or damage figure for this storm.

Track

Time (UTC)PositionWindPressureStatus
Feb 21, 00:0015.4S 172.2E20 kt1004 mbTropical depression
Feb 21, 06:0015.8S 172.0E20 kt1004 mbTropical depression
Feb 21, 12:0016.1S 172.2E20 kt1004 mbTropical depression
Feb 21, 18:0016.4S 172.7E25 kt1002 mbTropical depression
Feb 22, 00:0016.3S 173.3E30 kt1000 mbTropical depression
Feb 22, 06:0016.1S 173.8E25 kt1002 mbTropical depression
Feb 22, 12:0015.5S 173.8E30 kt1000 mbTropical depression
Feb 22, 18:0015.1S 173.3E35 kt997 mbTropical storm
Feb 23, 00:0014.7S 172.5E40 kt994 mbTropical storm
Feb 23, 06:0014.3S 171.7E45 kt991 mbTropical storm
Feb 23, 12:0013.9S 171.0E55 kt984 mbTropical storm
Feb 23, 18:0013.6S 170.3E70 kt972 mbTyphoon
Feb 24, 00:0013.4S 169.6E75 kt967 mbTyphoon
Feb 24, 06:0013.7S 169.1E75 kt967 mbTyphoon
Feb 24, 12:0014.0S 168.7E90 kt954 mbTyphoon
Feb 24, 18:0014.4S 168.3E85 kt954 mbTyphoon
Feb 25, 00:0014.9S 167.9E85 kt958 mbTyphoon
Feb 25, 06:0015.4S 167.7E90 kt954 mbTyphoon
Feb 25, 12:0015.9S 167.7E95 kt949 mbTyphoon
Feb 25, 18:0016.4S 167.8E105 kt938 mbTyphoon
Feb 26, 00:0017.0S 168.0E105 kt938 mbTyphoon
Feb 26, 06:0017.7S 168.3E100 kt944 mbTyphoon
Feb 26, 12:0018.6S 168.6E100 kt944 mbTyphoon
Feb 26, 18:0019.3S 168.9E105 kt938 mbTyphoon
Feb 27, 00:0020.1S 169.1E100 kt944 mbTyphoon
Feb 27, 06:0021.3S 169.4E100 kt944 mbTyphoon
Feb 27, 12:0022.6S 169.9E100 kt944 mbTyphoon
Feb 27, 18:0024.3S 170.7E100 kt944 mbTyphoon
Feb 28, 00:0026.3S 171.9E90 kt954 mbTyphoon
Feb 28, 06:0028.7S 173.1E85 kt958 mbTyphoon
Feb 28, 12:0031.1S 174.7E75 kt967 mbTyphoon
Feb 28, 18:0034.4S 176.9E55 kt984 mbTropical storm
Feb 29, 00:0037.1S 179.0E50 kt987 mbTropical storm
Feb 29, 06:0040.3S 178.2W45 kt991 mbTropical storm
Feb 29, 12:0043.3S 184.0E55 kt976 mbNot reported
Feb 29, 18:0047.0S 187.5E50 kt979 mbNot reported
Mar 1, 00:0049.0S 188.0E50 kt979 mbNot reported
Mar 1, 06:0050.0S 188.5E45 kt980 mbNot reported
Mar 1, 12:0051.0S 188.8E40 kt980 mbNot reported
Mar 1, 18:0052.0S 190.0E40 kt987 mbNot reported
Mar 2, 00:0053.5S 192.5E40 kt991 mbNot reported

Other South Pacific storms of 2004

What this means

A best track is the record a warning agency settles on after the storm, not what it said at the time: position, maximum sustained wind and central pressure every six hours, revised against every observation that came in later. Category is the Saffir-Simpson scale, which runs from Category 1 at 64 kt to Category 5 at 137 kt and reads wind only, so it says nothing about surge or rain. Accumulated cyclone energy adds up the square of the wind through the storm's life, so it counts strength and duration together.

Sources

Storm history from NOAA NCEI’s International Best Track Archive for Climate Stewardship (IBTrACS), which merges the official best track of every warning agency. Live storms, cones, watches and warnings from the National Hurricane Center and the Central Pacific Hurricane Center. Archived radar from NOAA’s Level II archive.