Unnamed tropical storm (1984)

Basin

South Pacific

Dates

March 23, 1984 to March 30, 1984

Peak strength

Tropical Storm, 40 kt (46 mph), ten-minute wind

Lowest pressure

990 mb (29.23 inHg)

Landfall

No; closest approach 233 km (145 mi)

Accumulated cyclone energy

0.8

Identifier

1984083S16174

No source this site reads publishes a machine-readable casualty or damage figure for a storm of this era. The National Hurricane Center’s season tables begin in 1995 and carry deaths and damage only from 2005 in the Atlantic and 2020 in both basins; the US Storm Events record begins in 1996.

• Tropical Storm FritzSouth Pacific · 1984Tropical Storm45 kt · 990 mb
• Tropical Storm AtuSouth Pacific · 1984Tropical Storm35 kt · 987 mb
• Cyclone GraceSouth Pacific · 1984Cat 165 kt · 970 mb
• Cyclone BetiSouth Pacific · 1984Cat 165 kt · 970 mb
• Tropical Storm HarveySouth Pacific · 1984Tropical Storm60 kt · 980 mb
• Tropical Storm IngridSouth Pacific · 1984Tropical Storm60 kt · 975 mb
• Unnamed tropical stormSouth Pacific · 1984Tropical Storm45 kt · 987 mb
• Tropical Storm JimSouth Pacific · 1984Tropical Storm45 kt · 970 mb
• Tropical Storm CyrilSouth Pacific · 1984Tropical Storm40 kt · 987 mb
• Cyclone KathySouth Pacific · 1984Cat 4125 kt · 920 mb
• Tropical Storm LanceSouth Pacific · 1984Tropical Storm60 kt · 980 mb

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. This storm’s winds are ten-minute averages from its regional agency. They read about 12 percent lower than the one-minute winds US agencies use, so a Saffir-Simpson category is not given for it.

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.