Cyclone Alda (1999)
Cyclone Alda reached Category 1 in the South Indian between January 14, 1999 and January 19, 1999, with a lowest pressure of 975 mb.
Track and intensity
The whole track of Cyclone Alda, 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.
The storm
- Basin
- South Indian
- Dates
- January 14, 1999 to January 19, 1999
- Peak strength
- Category 1, 65 kt (75 mph)
- Lowest pressure
- 975 mb (28.79 inHg)
- Landfall
- No; closest approach 114 km (71 mi)
- Accumulated cyclone energy
- 2.4
- Identifier
- SH121999
Deaths and damage
No source this site reads carries a casualty or damage figure for this storm.
Track
| Time (UTC) | Position | Wind | Pressure | Status |
|---|---|---|---|---|
| Jan 14, 12:00 | 20.2S 36.1E | 15 kt | 1002 mb | Mixed |
| Jan 14, 18:00 | 20.4S 36.4E | 15 kt | 1002 mb | Mixed |
| Jan 15, 00:00 | 20.3S 36.2E | 15 kt | 1002 mb | Mixed |
| Jan 15, 06:00 | 20.2S 36.2E | 20 kt | 1000 mb | Mixed |
| Jan 15, 12:00 | 20.4S 39.0E | 20 kt | 998 mb | Tropical storm |
| Jan 15, 18:00 | 20.4S 39.7E | 25 kt | 998 mb | Tropical storm |
| Jan 16, 00:00 | 20.7S 40.3E | 30 kt | 998 mb | Tropical storm |
| Jan 16, 06:00 | 21.3S 40.5E | 30 kt | 997 mb | Tropical storm |
| Jan 16, 12:00 | 22.0S 40.5E | 30 kt | 994 mb | Tropical storm |
| Jan 16, 18:00 | 22.7S 40.3E | 35 kt | 990 mb | Tropical storm |
| Jan 17, 00:00 | 23.2S 39.7E | 35 kt | 988 mb | Tropical storm |
| Jan 17, 06:00 | 23.7S 39.2E | 35 kt | 985 mb | Tropical storm |
| Jan 17, 12:00 | 24.4S 38.8E | 40 kt | 985 mb | Tropical storm |
| Jan 17, 18:00 | 25.3S 38.8E | 45 kt | 985 mb | Tropical storm |
| Jan 18, 00:00 | 26.3S 38.9E | 55 kt | 980 mb | Tropical storm |
| Jan 18, 06:00 | 27.4S 39.2E | 65 kt | 978 mb | Tropical storm |
| Jan 18, 12:00 | 28.5S 39.8E | 55 kt | 975 mb | Tropical storm |
| Jan 18, 18:00 | 29.6S 41.0E | 55 kt | 975 mb | Tropical storm |
| Jan 19, 00:00 | 30.8S 43.6E | 55 kt | 978 mb | Tropical storm |
| Jan 19, 06:00 | 32.2S 46.0E | 45 kt | 985 mb | Extratropical |
Other South Indian storms of 1999
- Unnamed tropical stormSouth Indian · 1999
- Unnamed tropical stormSouth Indian · 1999
- Tropical Storm ZeliaSouth Indian · 1999
- Cyclone AlisonSouth Indian · 1999
- Cyclone BillySouth Indian · 1999
- Tropical Storm CathySouth Indian · 1999
- Unnamed tropical depressionSouth Indian · 1999
- Cyclone Birenda:DamienSouth Indian · 1999
- Tropical Storm ChikitaSouth Indian · 1999
- Unnamed tropical stormSouth Indian · 1999
- Unnamed tropical stormSouth Indian · 1999
- Unnamed tropical depressionSouth Indian · 1999
- Cyclone DavinaSouth Indian · 1999
- Unnamed tropical stormSouth Indian · 1999
- Unnamed tropical stormSouth Indian · 1999
- Cyclone VanceSouth Indian · 1999
- Cyclone ElaineSouth Indian · 1999
- Unnamed tropical depressionSouth Indian · 1999
- Cyclone Evrina:FredericSouth Indian · 1999
- Cyclone GwendaSouth Indian · 1999
- Tropical Storm HamishSouth Indian · 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.