Cyclone Jacob (1985)
Cyclone Jacob reached Category 1 in the South Indian between February 15, 1985 and February 28, 1985, with a lowest pressure of 950 mb.
Track and intensity
The whole track of Cyclone Jacob, colored by strength, with the other storms of the 1985 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
- February 15, 1985 to February 28, 1985
- Peak strength
- Category 1, 75 kt (86 mph)
- Lowest pressure
- 950 mb (28.05 inHg)
- Landfall
- No; closest approach 70 km (43 mi)
- Accumulated cyclone energy
- 9.9
- Identifier
- SH241985
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) | Position | Wind | Pressure | Status |
|---|---|---|---|---|
| Feb 15, 00:00 | 9.0S 127.6E | 25 kt | 1003 mb | Tropical storm |
| Feb 15, 06:00 | 10.1S 127.3E | 25 kt | 1001 mb | Tropical storm |
| Feb 15, 12:00 | 11.0S 127.1E | 25 kt | 1000 mb | Tropical storm |
| Feb 15, 18:00 | 11.7S 126.7E | 25 kt | 1000 mb | Tropical storm |
| Feb 16, 00:00 | 12.1S 126.1E | 25 kt | 999 mb | Tropical storm |
| Feb 16, 06:00 | 12.6S 124.3E | 30 kt | 998 mb | XX |
| Feb 16, 12:00 | 13.1S 123.2E | 25 kt | 997 mb | XX |
| Feb 16, 18:00 | 13.4S 122.3E | 25 kt | 995 mb | XX |
| Feb 17, 00:00 | 13.6S 121.5E | 25 kt | 994 mb | XX |
| Feb 17, 06:00 | 13.8S 120.8E | 25 kt | 992 mb | XX |
| Feb 17, 12:00 | 13.9S 119.9E | 25 kt | 990 mb | XX |
| Feb 17, 18:00 | 14.0S 119.1E | 30 kt | 988 mb | XX |
| Feb 18, 00:00 | 14.2S 118.5E | 30 kt | 984 mb | XX |
| Feb 18, 06:00 | 14.4S 117.9E | 30 kt | 980 mb | XX |
| Feb 18, 12:00 | 14.7S 117.4E | 30 kt | 976 mb | XX |
| Feb 18, 18:00 | 15.0S 116.9E | 35 kt | 966 mb | XX |
| Feb 19, 00:00 | 15.1S 116.3E | 40 kt | 963 mb | XX |
| Feb 19, 06:00 | 15.2S 115.6E | 45 kt | 957 mb | XX |
| Feb 19, 12:00 | 15.2S 114.8E | 50 kt | 953 mb | XX |
| Feb 19, 18:00 | 15.3S 114.0E | 55 kt | 952 mb | XX |
| Feb 20, 00:00 | 15.3S 113.2E | 60 kt | 952 mb | XX |
| Feb 20, 06:00 | 15.4S 112.3E | 65 kt | 950 mb | XX |
| Feb 20, 12:00 | 15.5S 111.5E | 70 kt | 951 mb | XX |
| Feb 20, 18:00 | 15.6S 110.6E | 75 kt | 952 mb | XX |
| Feb 21, 00:00 | 15.7S 109.7E | 70 kt | 952 mb | XX |
| Feb 21, 06:00 | 15.9S 108.8E | 65 kt | 952 mb | XX |
| Feb 21, 12:00 | 16.1S 107.7E | 65 kt | 953 mb | XX |
| Feb 21, 18:00 | 16.3S 106.5E | 60 kt | 953 mb | XX |
| Feb 22, 00:00 | 16.6S 105.4E | 55 kt | 954 mb | XX |
| Feb 22, 06:00 | 16.9S 104.3E | 55 kt | 954 mb | XX |
| Feb 22, 12:00 | 17.3S 103.5E | 55 kt | 955 mb | XX |
| Feb 22, 18:00 | 17.8S 102.7E | 55 kt | 955 mb | XX |
| Feb 23, 00:00 | 18.4S 102.0E | 55 kt | 956 mb | XX |
| Feb 23, 06:00 | 19.2S 101.2E | 55 kt | 957 mb | XX |
| Feb 23, 12:00 | 20.0S 100.3E | 55 kt | 958 mb | XX |
| Feb 23, 18:00 | 20.9S 99.4E | 55 kt | 959 mb | XX |
| Feb 24, 00:00 | 21.8S 98.5E | 55 kt | 960 mb | XX |
| Feb 24, 06:00 | 22.8S 97.5E | 55 kt | 963 mb | XX |
| Feb 24, 12:00 | 23.8S 96.6E | 55 kt | 966 mb | XX |
| Feb 24, 18:00 | 24.8S 95.7E | 50 kt | 970 mb | XX |
| Feb 25, 00:00 | 26.0S 95.3E | 50 kt | 976 mb | XX |
| Feb 25, 06:00 | 27.3S 95.3E | 50 kt | 979 mb | XX |
| Feb 25, 12:00 | 28.6S 95.4E | 50 kt | 982 mb | XX |
| Feb 25, 18:00 | 29.9S 95.8E | 45 kt | 985 mb | XX |
| Feb 26, 00:00 | 31.5S 96.5E | 45 kt | 988 mb | XX |
| Feb 26, 06:00 | 33.5S 97.6E | 45 kt | 992 mb | XX |
| Feb 26, 12:00 | 35.5S 98.8E | 40 kt | 994 mb | XX |
| Feb 26, 18:00 | 36.6S 100.2E | 40 kt | 995 mb | Mixed |
| Feb 27, 00:00 | 37.4S 101.7E | 35 kt | 996 mb | Mixed |
| Feb 27, 06:00 | 38.2S 103.3E | 30 kt | 997 mb | Tropical storm |
| Feb 27, 12:00 | 38.8S 105.6E | 30 kt | 998 mb | Tropical storm |
| Feb 27, 18:00 | 39.2S 108.4E | 25 kt | 999 mb | Tropical storm |
| Feb 28, 00:00 | 39.2S 111.4E | 25 kt | 1002 mb | Tropical storm |
Other South Indian storms of 1985
- Unnamed tropical stormSouth Indian · 1985
- Tropical Storm AnetySouth Indian · 1985
- Tropical Storm BobalahySouth Indian · 1985
- Tropical Storm EmmaSouth Indian · 1985
- Unnamed tropical stormSouth Indian · 1985
- Cyclone FrankSouth Indian · 1985
- Cyclone CelestinaSouth Indian · 1985
- Unnamed tropical stormSouth Indian · 1985
- Cyclone DitraSouth Indian · 1985
- Tropical Storm GertieSouth Indian · 1985
- Tropical Storm EsiteraSouth Indian · 1985
- Tropical Storm EsiteraSouth Indian · 1985
- Tropical Storm HubertSouth Indian · 1985
- Tropical Storm IsobelSouth Indian · 1985
- Cyclone GerimenaSouth Indian · 1985
- Tropical Storm FeliksaSouth Indian · 1985
- Unnamed tropical stormSouth Indian · 1985
- Cyclone KirstySouth Indian · 1985
- Tropical Storm LindsaySouth Indian · 1985
- Cyclone HelisaoninaSouth Indian · 1985
- Cyclone MargotSouth Indian · 1985
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.