Unnamed tropical depression (1992)

Basin

South Indian

Dates

October 16, 1991 to October 22, 1991

Peak strength

Tropical Depression, 28 kt (32 mph), ten-minute wind

Lowest pressure

997 mb (29.44 inHg)

Landfall

No; closest approach 848 km (527 mi)

Accumulated cyclone energy

0.0

Identifier

1991290S10077

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.

• Unnamed tropical stormSouth Indian · 1992Tropical Storm45 kt
• Unnamed tropical stormSouth Indian · 1992Tropical Storm35 kt · 997 mb
• Unnamed tropical stormSouth Indian · 1992Tropical Storm45 kt · 991 mb
• Cyclone GrahamSouth Indian · 1992Cat 4120 kt · 915 mb
• Cyclone AlexandraSouth Indian · 1992Cat 3105 kt · 972 mb
• Tropical Storm BrynaSouth Indian · 1992Tropical Storm45 kt · 988 mb
• Tropical Storm MarkSouth Indian · 1992Tropical Storm55 kt · 980 mb
• Tropical Storm CelestaSouth Indian · 1992Tropical Storm45 kt · 985 mb
• Unnamed tropical depressionSouth Indian · 1992Tropical Depression25 kt
• Tropical Storm DaviliaSouth Indian · 1992Tropical Storm35 kt · 988 mb
• Tropical Storm ElizabethaSouth Indian · 1992Tropical Storm35 kt · 992 mb
• Cyclone FaridaSouth Indian · 1992Cat 4120 kt · 941 mb
• Cyclone IanSouth Indian · 1992Cat 4115 kt · 930 mb
• Tropical Depression GerdaSouth Indian · 1992Tropical Depression20 kt · 1003 mb
• Cyclone Harriet:HeatherSouth Indian · 1992Cat 4120 kt · 930 mb
• Unnamed tropical depressionSouth Indian · 1992Tropical Depression31 kt · 995 mb
• Tropical Storm GerdaSouth Indian · 1992Tropical Storm35 kt · 992 mb
• Tropical Storm GerdaSouth Indian · 1992Tropical Storm35 kt · 992 mb
• Unnamed tropical depressionSouth Indian · 1992Tropical Depression27 kt · 998 mb
• Cyclone NevilleSouth Indian · 1992Cat 4120 kt · 945 mb
• Cyclone Irna:JaneSouth Indian · 1992Cat 4120 kt · 915 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.