Cyclone Sina (1991)

Basin

South Pacific

Dates

November 23, 1990 to December 4, 1990

Peak strength

Category 4, 125 kt (144 mph)

Lowest pressure

960 mb (28.35 inHg)

Landfall

No; closest approach 22 km (14 mi)

Accumulated cyclone energy

18.1

Fastest the center moved

36 kt (41 mph)

Identifier

SH031991

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.

• Cyclone JoySouth Pacific · 1991 · 6 deathsCat 290 kt · 940 mb
• Tropical Storm DaphneSouth Pacific · 1991Tropical Storm60 kt · 976 mb
• Tropical Storm KelvinSouth Pacific · 1991Tropical Storm55 kt · 980 mb
• Unnamed tropical depressionSouth Pacific · 1991Tropical Depression30 kt
• Unnamed tropical depressionSouth Pacific · 1991Tropical Depression30 kt
• Cyclone LisaSouth Pacific · 1991Cat 180 kt · 972 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.

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.

• Wikipedia article: Cyclone Sina