Cyclone Chalane (2021)
Cyclone Chalane reached Category 1 in the South Indian between December 20, 2020 and January 4, 2021, with a lowest pressure of 985 mb, and made landfall.
Track and intensity
The whole track of Cyclone Chalane, colored by strength, with the other storms of the 2021 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
- December 20, 2020 to January 4, 2021
- Peak strength
- Category 1, 70 kt (81 mph)
- Lowest pressure
- 985 mb (29.09 inHg)
- Landfall
- Yes
- Accumulated cyclone energy
- 3.2
- Tropical-storm-force wind reached
- 120 nmi (222 km, 138 mi) from the center at its widest
- Hurricane-force wind reached
- 15 nmi (28 km, 17 mi) from the center at its widest
- Eyewall radius at its peak
- 20 nmi (37 km, 23 mi)
- Overall size
- 265 nmi (491 km, 305 mi) to the outermost closed isobar
- Fastest the center moved
- 23 kt (26 mph)
- Identifier
- SH072021
Deaths and damage
No source this site reads carries a casualty or damage figure for this storm.
Track
| Time (UTC) | Position | Wind | Pressure | Status |
|---|---|---|---|---|
| Dec 20, 06:00 | 11.4S 64.9E | 22 kt | 1007 mb | Tropical storm |
| Dec 20, 12:00 | 11.8S 64.7E | 22 kt | 1007 mb | Tropical storm |
| Dec 20, 18:00 | 12.1S 64.5E | 23 kt | 1006 mb | Tropical storm |
| Dec 21, 00:00 | 12.3S 64.3E | 23 kt | 1006 mb | Tropical storm |
| Dec 21, 06:00 | 12.5S 63.9E | 25 kt | 1005 mb | Tropical storm |
| Dec 21, 12:00 | 12.7S 63.2E | 27 kt | 1004 mb | Tropical storm |
| Dec 21, 18:00 | 13.0S 61.9E | 15 kt | 1006 mb | Disturbance |
| Dec 22, 00:00 | 13.3S 62.0E | 20 kt | 1004 mb | Disturbance |
| Dec 22, 06:00 | 13.6S 62.1E | 20 kt | 1004 mb | Disturbance |
| Dec 22, 12:00 | 14.3S 61.9E | 20 kt | 1005 mb | Disturbance |
| Dec 22, 18:00 | 14.6S 61.4E | 25 kt | 1005 mb | Tropical depression |
| Dec 23, 00:00 | 14.7S 61.1E | 30 kt | 1001 mb | Tropical depression |
| Dec 23, 06:00 | 14.7S 60.9E | 30 kt | 1001 mb | Tropical depression |
| Dec 23, 12:00 | 14.6S 60.7E | 30 kt | 998 mb | Tropical depression |
| Dec 23, 18:00 | 14.6S 60.4E | 30 kt | 1001 mb | Tropical depression |
| Dec 24, 00:00 | 14.7S 60.1E | 30 kt | 999 mb | Tropical depression |
| Dec 24, 06:00 | 15.2S 59.0E | 30 kt | 1002 mb | Tropical depression |
| Dec 24, 12:00 | 15.4S 58.2E | 30 kt | 1000 mb | Tropical depression |
| Dec 24, 18:00 | 15.5S 57.5E | 30 kt | 1006 mb | Tropical depression |
| Dec 25, 00:00 | 15.7S 56.7E | 40 kt | 1000 mb | Tropical storm |
| Dec 25, 06:00 | 15.8S 55.8E | 40 kt | 1001 mb | Tropical storm |
| Dec 25, 12:00 | 15.8S 55.0E | 35 kt | 1000 mb | Tropical storm |
| Dec 25, 18:00 | 16.1S 53.6E | 35 kt | 1000 mb | Tropical storm |
| Dec 26, 00:00 | 16.1S 53.1E | 30 kt | 1006 mb | Tropical depression |
| Dec 26, 06:00 | 16.2S 52.5E | 30 kt | 1004 mb | Tropical depression |
| Dec 26, 12:00 | 16.8S 51.0E | 30 kt | 1003 mb | Tropical depression |
| Dec 26, 18:00 | 17.5S 49.8E | 35 kt | 1003 mb | Tropical storm |
| Dec 27, 00:00 | 17.7S 48.7E | 30 kt | 1002 mb | Tropical depression |
| Dec 27, 06:00 | 18.2S 47.6E | 30 kt | 1002 mb | Tropical depression |
| Dec 27, 12:00 | 18.7S 46.6E | 30 kt | 1002 mb | Tropical depression |
| Dec 27, 18:00 | 19.2S 45.7E | 25 kt | 1004 mb | Tropical depression |
| Dec 28, 00:00 | 19.7S 44.9E | 25 kt | 1004 mb | Tropical depression |
| Dec 28, 06:00 | 20.0S 43.5E | 35 kt | 1004 mb | Tropical storm |
| Dec 28, 12:00 | 20.0S 42.4E | 40 kt | 1003 mb | Tropical storm |
| Dec 28, 18:00 | 19.9S 42.0E | 45 kt | 1000 mb | Tropical storm |
| Dec 29, 00:00 | 19.9S 41.1E | 45 kt | 999 mb | Tropical storm |
| Dec 29, 06:00 | 19.7S 39.6E | 50 kt | 997 mb | Tropical storm |
| Dec 29, 12:00 | 19.6S 38.5E | 55 kt | 990 mb | Tropical storm |
| Dec 29, 18:00 | 19.4S 37.3E | 65 kt | 989 mb | Typhoon |
| Dec 30, 00:00 | 19.3S 36.0E | 70 kt | 985 mb | Typhoon |
| Dec 30, 06:00 | 19.2S 34.4E | 45 kt | 997 mb | Tropical storm |
| Dec 30, 12:00 | 19.4S 31.9E | 35 kt | 1002 mb | Tropical storm |
| Dec 30, 18:00 | 19.7S 29.2E | 25 kt | 1006 mb | Tropical depression |
| Dec 31, 00:00 | 20.0S 28.0E | 25 kt | 1006 mb | Tropical depression |
| Dec 31, 06:00 | 20.3S 26.7E | 20 kt | 1009 mb | Disturbance |
| Dec 31, 12:00 | 20.6S 25.7E | Not reported | ||
| Dec 31, 18:00 | 21.1S 24.4E | Not reported | ||
| Jan 1, 00:00 | 21.4S 23.1E | Not reported | ||
| Jan 1, 06:00 | 21.6S 21.7E | Not reported | ||
| Jan 1, 12:00 | 21.5S 20.1E | Not reported | ||
| Jan 1, 18:00 | 21.1S 18.8E | Not reported | ||
| Jan 2, 00:00 | 20.7S 18.0E | Not reported | ||
| Jan 2, 06:00 | 20.5S 17.0E | Not reported | ||
| Jan 2, 12:00 | 20.4S 15.7E | 15 kt | Disturbance | |
| Jan 2, 18:00 | 20.5S 14.6E | 15 kt | Disturbance | |
| Jan 3, 00:00 | 20.8S 13.8E | 15 kt | Disturbance | |
| Jan 3, 06:00 | 21.1S 13.1E | 15 kt | Disturbance | |
| Jan 3, 12:00 | 21.5S 12.5E | Disturbance | ||
| Jan 3, 18:00 | 21.9S 12.0E | Disturbance | ||
| Jan 4, 00:00 | 22.4S 11.7E | Disturbance | ||
| Jan 4, 06:00 | 22.9S 11.3E | Disturbance |
Other South Indian storms of 2021
- Cyclone AliciaSouth Indian · 2021
- Tropical Storm BongoyoSouth Indian · 2021
- Unnamed tropical stormSouth Indian · 2021
- Tropical Storm DaniloSouth Indian · 2021
- Unnamed tropical stormSouth Indian · 2021
- Cyclone EloiseSouth Indian · 2021
- Tropical Storm JoshuaSouth Indian · 2021
- Unnamed tropical stormSouth Indian · 2021
- Unnamed tropical stormSouth Indian · 2021
- Unnamed tropical stormSouth Indian · 2021
- Cyclone FarajiSouth Indian · 2021
- Cyclone GuambeSouth Indian · 2021
- Cyclone MarianSouth Indian · 2021
- Tropical Storm ImanSouth Indian · 2021
- Cyclone HabanaSouth Indian · 2021
- Unnamed tropical stormSouth Indian · 2021
- Cyclone SerojaSouth Indian · 2021
- Tropical Storm OdetteSouth Indian · 2021
- Unnamed tropical stormSouth Indian · 2021
- Tropical Storm JoboSouth Indian · 2021
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.