The 1983 season

Cyclone Nisha:Orama (1983)

Cyclone Nisha:Orama reached Category 3 in the South Pacific between February 20, 1983 and February 28, 1983, with a lowest pressure of 925 mb.

Track and intensity

The whole track of Cyclone Nisha:Orama, colored by strength, with the other storms of the 1983 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 20, 1983 to February 28, 1983
Peak strength
Category 3, 100 kt (115 mph)
Lowest pressure
925 mb (27.32 inHg)
Landfall
No; closest approach 2717 km (1688 mi)
Accumulated cyclone energy
14.8
Identifier
SH131983

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)PositionWindPressureStatus
Feb 20, 00:0015.0S 146.0W30 kt997 mbNot reported
Feb 20, 06:0015.0S 145.6WNot reported
Feb 20, 12:0012.8S 142.7W25 kt997 mbTropical storm
Feb 20, 18:0013.0S 142.7W28 ktTropical storm
Feb 21, 00:0013.4S 142.7W30 kt997 mbTropical storm
Feb 21, 06:0013.7S 142.7W30 ktTropical storm
Feb 21, 12:0014.0S 142.7W30 kt997 mbTropical storm
Feb 21, 18:0014.2S 142.7W31 ktTropical storm
Feb 22, 00:0014.5S 143.0W35 kt995 mbTropical storm
Feb 22, 06:0014.6S 143.3W38 ktTropical storm
Feb 22, 12:0014.7S 143.8W45 kt987 mbTropical storm
Feb 22, 18:0014.7S 144.4W55 ktTropical storm
Feb 23, 00:0014.8S 145.1W65 kt980 mbTropical storm
Feb 23, 06:0014.7S 145.6W72 ktTropical storm
Feb 23, 12:0014.9S 146.1W80 kt965 mbTropical storm
Feb 23, 18:0015.2S 146.4W87 ktTropical storm
Feb 24, 00:0015.5S 146.7W95 kt945 mbTropical storm
Feb 24, 06:0015.8S 146.8W100 ktTropical storm
Feb 24, 12:0016.1S 146.8W100 kt925 mbTropical storm
Feb 24, 18:0016.4S 146.7W97 ktTropical storm
Feb 25, 00:0016.7S 146.6W95 kt925 mbTropical storm
Feb 25, 06:0017.0S 146.4W92 ktTropical storm
Feb 25, 12:0017.3S 146.2W90 kt940 mbTropical storm
Feb 25, 18:0017.6S 145.9W87 ktTropical storm
Feb 26, 00:0018.1S 145.7W85 kt955 mbTropical storm
Feb 26, 06:0018.7S 145.0W82 ktTropical storm
Feb 26, 12:0019.6S 144.3W80 kt965 mbTropical storm
Feb 26, 18:0020.4S 143.5W77 ktTropical storm
Feb 27, 00:0021.4S 142.7W75 kt980 mbTropical storm
Feb 27, 06:0022.9S 141.5W71 ktTropical storm
Feb 27, 12:0024.9S 140.4W65 kt990 mbTropical storm
Feb 27, 18:0027.1S 139.2W53 ktTropical storm
Feb 28, 00:0029.6S 138.2W39 ktTropical storm
Feb 28, 06:0032.8S 137.4W31 ktTropical storm
Feb 28, 12:0036.5S 137.0W25 ktTropical storm

Other South Pacific storms of 1983

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.