Unnamed tropical storm (1984)
Unnamed tropical storm peaked at 45 kt in the South Pacific between February 20, 1984 and February 24, 1984, with a lowest pressure of 987 mb.
Track and intensity
The whole track of Unnamed tropical storm, colored by strength, with the other storms of the 1984 season in the same basin behind it, and its wind and pressure hour by hour. Every fix is in the track table below.
The storm
- Basin
- South Pacific
- Dates
- February 20, 1984 to February 24, 1984
- Peak strength
- Tropical Storm, 45 kt (52 mph), ten-minute wind
- Lowest pressure
- 987 mb (29.15 inHg)
- Landfall
- No; closest approach 54 km (34 mi)
- Accumulated cyclone energy
- 0.6
- Identifier
- 1984051S20163
Deaths and damage
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.
Track
| Time (UTC) | Position | Wind | Pressure | Status |
|---|---|---|---|---|
| Feb 20, 00:00 | 19.5S 163.0E | 30 kt | 997 mb | Not reported |
| Feb 20, 06:00 | 19.9S 164.8E | Not reported | ||
| Feb 20, 12:00 | 20.2S 166.5E | 30 kt | 997 mb | Not reported |
| Feb 20, 18:00 | 20.4S 167.9E | Not reported | ||
| Feb 21, 00:00 | 20.7S 169.2E | 30 kt | 997 mb | Not reported |
| Feb 21, 06:00 | 21.0S 170.7E | Not reported | ||
| Feb 21, 12:00 | 21.6S 172.2E | 30 kt | 997 mb | Not reported |
| Feb 21, 18:00 | 22.5S 173.5E | Not reported | ||
| Feb 22, 00:00 | 23.5S 174.5E | 30 kt | 997 mb | Not reported |
| Feb 22, 06:00 | 24.3S 174.9E | Not reported | ||
| Feb 22, 12:00 | 25.0S 175.0E | 40 kt | 990 mb | Not reported |
| Feb 22, 18:00 | 25.8S 175.0E | Not reported | ||
| Feb 23, 00:00 | 26.6S 175.0E | 45 kt | 987 mb | Not reported |
| Feb 23, 06:00 | 27.1S 175.0E | Not reported | ||
| Feb 23, 12:00 | 27.5S 175.0E | 40 kt | 990 mb | Not reported |
| Feb 23, 18:00 | 27.8S 175.0E | Not reported | ||
| Feb 24, 00:00 | 28.0S 175.0E | 35 kt | 995 mb | Not reported |
Other South Pacific storms of 1984
- Tropical Storm FritzSouth Pacific · 1984
- Tropical Storm AtuSouth Pacific · 1984
- Cyclone GraceSouth Pacific · 1984
- Cyclone BetiSouth Pacific · 1984
- Tropical Storm HarveySouth Pacific · 1984
- Tropical Storm IngridSouth Pacific · 1984
- Tropical Storm JimSouth Pacific · 1984
- Tropical Storm CyrilSouth Pacific · 1984
- Cyclone KathySouth Pacific · 1984
- Unnamed tropical stormSouth Pacific · 1984
- Tropical Storm LanceSouth Pacific · 1984
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. 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.
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.