The 1999 season

Tropical Storm Zelia (1999)

Tropical Storm Zelia peaked at 45 kt in the South Indian between October 6, 1998 and October 10, 1998, with a lowest pressure of 990 mb.

Track and intensity

The whole track of Tropical Storm Zelia, colored by strength, with the other storms of the 1999 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 Indian
Dates
October 6, 1998 to October 10, 1998
Peak strength
Tropical Storm, 45 kt (52 mph)
Lowest pressure
990 mb (29.23 inHg)
Landfall
No; closest approach 1220 km (758 mi)
Accumulated cyclone energy
2.1
Identifier
SH031999

Deaths and damage

No source this site reads carries a casualty or damage figure for this storm.

Track

Time (UTC)PositionWindPressureStatus
Oct 6, 00:0010.2S 92.0E20 ktTropical storm
Oct 6, 06:0010.3S 91.6E25 ktTropical storm
Oct 6, 12:0010.6S 91.3E25 ktTropical storm
Oct 6, 18:0010.9S 91.5E30 ktTropical storm
Oct 7, 00:0011.2S 92.2E35 ktTropical storm
Oct 7, 06:0011.6S 92.8E35 kt1002 mbTropical storm
Oct 7, 12:0012.1S 93.5E35 kt999 mbTropical storm
Oct 7, 18:0012.7S 94.2E35 kt996 mbTropical storm
Oct 8, 00:0013.5S 94.8E35 kt994 mbTropical storm
Oct 8, 06:0014.0S 95.1E35 kt992 mbTropical storm
Oct 8, 12:0014.5S 95.3E45 kt990 mbTropical storm
Oct 8, 18:0014.6S 95.6E45 kt992 mbTropical storm
Oct 9, 00:0014.5S 96.1E45 kt994 mbTropical storm
Oct 9, 06:0014.4S 96.3E35 kt998 mbTropical storm
Oct 9, 12:0014.4S 96.5E35 kt1000 mbTropical storm
Oct 9, 18:0014.3S 96.7E35 kt1001 mbTropical storm
Oct 10, 00:0014.2S 96.7E35 kt1002 mbTropical storm
Oct 10, 06:0014.0S 96.3E35 kt1004 mbTropical storm
Oct 10, 12:0013.6S 95.8E35 ktTropical storm

Other South Indian storms of 1999

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.