Tropical cyclones · North Indian Ocean
Tropical Storm One tracker
Dissipated · last advisory 24 Sept, 00:00 UTC (JTWC)
Tropical Storm One formed in the North Indian Ocean (22 Sept 2026 – 24 Sept 2026). It peaked as tropical storm with maximum sustained winds of 45 kt. At its last advisory (24 Sept, 00:00 UTC) it was at 18.1°N 83.7°E with 35 kt. This page is kept as an archive: it no longer updates.
- Category
- tropical storm
- TS
- Max sustained wind
- 35 kt
- 65 km/h · 40 mph
- Position
- 18.1°N 83.7°E
- Movement
- north, 3 kt (6 km/h)
- Last advisory
- 24 Sept, 00:00 UTC
- JTWC
- Peak
- 45 kt
- tropical storm
Track
track so farforecastTDTSCat 1Cat 2Cat 3Cat 4Cat 5
Dots are the observed positions, coloured by the Saffir-Simpson category the storm had at each.
Track One live: path, forecast and cone Wind around One on the live map Gusts Rain
Not an official warning. This page repeats public data from NHC, JTWC and GDACS and can be hours old. For watches, warnings and evacuation orders follow your national weather service and local authorities.
Land and people One threatened
GDACS estimates 10,248,388 people inside the forecast area of tropical-storm-force winds (63 km/h, 39 mph or more).
Countries and territories on the track: India.
Track history
| Time (UTC) | Position | Wind | Category |
|---|---|---|---|
| 24 Sept, 00:00 UTC | 18.1°N 83.7°E | 35 kt | TS |
| 23 Sept, 18:00 UTC | 17.8°N 83.7°E | 40 kt | TS |
| 23 Sept, 12:00 UTC | 17.8°N 84.0°E | 45 kt | TS |
| 23 Sept, 06:00 UTC | 17.8°N 84.6°E | 45 kt | TS |
| 23 Sept, 00:00 UTC | 17.6°N 84.9°E | 40 kt | TS |
| 22 Sept, 18:00 UTC | 17.6°N 84.8°E | 35 kt | TS |
Official sources
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Questions
- When was Tropical Storm One?
- 22 Sept 2026 – 24 Sept 2026, in the North Indian Ocean.
- How strong did Tropical Storm One get?
- Its peak was tropical storm, with maximum sustained winds of 45 kt.
Saffir-Simpson categories
| Category | Wind (kt) | km/h | mph | Typical damage |
|---|---|---|---|---|
| TD tropical depression | < 34 | < 63 | < 39 | Heavy rain and flooding are the main danger. |
| TS tropical storm | 34–63 | 63–118 | 39–73 | Damaging gusts, heavy rain, flooding, dangerous seas. |
| Cat 1 Category 1 | 64–82 | 119–153 | 74–95 | Very dangerous winds: damage to roofs, trees and power lines. |
| Cat 2 Category 2 | 83–95 | 154–177 | 96–110 | Extremely dangerous winds: extensive damage, power cuts for days. |
| Cat 3 Category 3 | 96–112 | 178–208 | 111–129 | Major hurricane: devastating damage, homes lose roofs, weeks without power. |
| Cat 4 Category 4 | 113–136 | 209–251 | 130–156 | Catastrophic damage: most trees and power poles down, areas uninhabitable for weeks. |
| Cat 5 Category 5 | ≥ 137 | ≥ 252 | ≥ 157 | Catastrophic damage: a high share of homes destroyed, areas uninhabitable for months. |
How to read the cone
The cone is drawn through circles that contain the true centre position about two times out of three, based on the past five years of forecast errors. It widens with time because the forecast gets less certain. It is not the size of the storm: damaging wind, rain and surge often extend hundreds of kilometres outside it.
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How this page is made
Built every hour by LayEarth from public feeds: the NOAA National Hurricane Center (CurrentStorms.json, forecast advisories, cone and best-track files) for the Atlantic and the eastern and central Pacific, and GDACS (European Commission JRC and UN OCHA), which relays JTWC and the regional centres, for the other basins, with its estimates of people exposed. Category is computed here from the 1-minute sustained wind; centres that use 10-minute winds (RSMC La Réunion, BoM, Fiji, IMD, JMA) publish lower numbers and their own scales. Kilometres per hour and miles per hour are rounded to 5.