Tropical Storm Choi-Wan (2021)
Tropical Storm Choi-Wan peaked at 45 kt in the Western Pacific between May 28, 2021 and June 6, 2021, with a lowest pressure of 996 mb, and made landfall.
Radar
Reflectivity now over Tropical Storm Choi-Wan. Open it to see storms, cones and warnings on the map.
Radar mosaic and map layers from NOAA MRMS. Boundaries from the Iowa Environmental Mesonet.
The storm
- Basin
- Western Pacific
- Dates
- May 28, 2021 to June 6, 2021
- Peak strength
- Tropical Storm, 45 kt (52 mph)
- Lowest pressure
- 996 mb (29.41 inHg)
- Landfall
- Yes
- Accumulated cyclone energy
- 2.3
- Tropical-storm-force wind reached
- 100 nmi (185 km, 115 mi) from the center at its widest
- Eyewall radius at its peak
- 15 nmi (28 km, 17 mi)
- Overall size
- 235 nmi (435 km, 270 mi) to the outermost closed isobar
- Peak gust in the best track
- 45 kt (52 mph)
- Fastest the center moved
- 36 kt (41 mph)
- Identifier
- WP042021
Deaths and damage
No source this site reads carries a casualty or damage figure for this storm.
Track
| Time (UTC) | Position | Wind | Pressure | Status |
|---|---|---|---|---|
| May 28, 00:00 | 4.8N 142.1E | 15 kt | 1007 mb | Disturbance |
| May 28, 06:00 | 5.2N 141.0E | 15 kt | 1006 mb | Disturbance |
| May 28, 12:00 | 5.6N 139.9E | 15 kt | 1010 mb | Disturbance |
| May 28, 18:00 | 5.9N 138.6E | 15 kt | 1010 mb | Disturbance |
| May 29, 00:00 | 6.1N 137.2E | 15 kt | 1010 mb | Disturbance |
| May 29, 06:00 | 5.9N 135.9E | 20 kt | 1008 mb | Disturbance |
| May 29, 12:00 | 5.8N 135.1E | 25 kt | 1005 mb | Tropical depression |
| May 29, 18:00 | 6.3N 134.3E | 25 kt | 1004 mb | Tropical depression |
| May 30, 00:00 | 6.5N 133.5E | 30 kt | 1002 mb | Tropical depression |
| May 30, 06:00 | 6.7N 132.7E | 35 kt | 998 mb | Tropical storm |
| May 30, 12:00 | 6.8N 131.8E | 35 kt | 1000 mb | Tropical storm |
| May 30, 18:00 | 7.3N 131.1E | 40 kt | 999 mb | Tropical storm |
| May 31, 00:00 | 8.1N 130.4E | 45 kt | 998 mb | Tropical storm |
| May 31, 06:00 | 8.9N 129.7E | 45 kt | 996 mb | Tropical storm |
| May 31, 12:00 | 9.5N 129.1E | 45 kt | 997 mb | Tropical storm |
| May 31, 18:00 | 9.8N 128.3E | 40 kt | 998 mb | Tropical storm |
| Jun 1, 00:00 | 10.1N 127.3E | 35 kt | 1001 mb | Tropical storm |
| Jun 1, 06:00 | 11.1N 126.7E | 35 kt | 1001 mb | Tropical storm |
| Jun 1, 12:00 | 11.7N 125.6E | 30 kt | 1003 mb | Tropical depression |
| Jun 1, 18:00 | 11.9N 124.0E | 30 kt | 1001 mb | Tropical depression |
| Jun 2, 00:00 | 12.7N 122.3E | 30 kt | 1002 mb | Tropical depression |
| Jun 2, 06:00 | 13.3N 121.5E | 30 kt | 1000 mb | Tropical depression |
| Jun 2, 12:00 | 13.7N 120.7E | 30 kt | 1003 mb | Tropical depression |
| Jun 2, 18:00 | 14.6N 119.8E | 30 kt | 1003 mb | Tropical depression |
| Jun 3, 00:00 | 16.4N 119.1E | 35 kt | 1000 mb | Tropical storm |
| Jun 3, 06:00 | 17.7N 118.1E | 35 kt | 1000 mb | Tropical storm |
| Jun 3, 12:00 | 18.5N 118.3E | 35 kt | 1002 mb | Tropical storm |
| Jun 3, 18:00 | 19.5N 118.5E | 35 kt | 997 mb | Tropical storm |
| Jun 4, 00:00 | 20.4N 118.7E | 35 kt | 997 mb | Tropical storm |
| Jun 4, 06:00 | 21.0N 119.6E | 30 kt | 999 mb | Tropical depression |
| Jun 4, 12:00 | 21.9N 121.2E | 25 kt | 1004 mb | Tropical depression |
| Jun 4, 18:00 | 23.1N 122.5E | 25 kt | 1005 mb | Tropical depression |
| Jun 5, 00:00 | 24.8N 123.8E | 35 kt | 1001 mb | Tropical storm |
| Jun 5, 06:00 | 26.5N 125.9E | 35 kt | 1001 mb | Tropical storm |
| Jun 5, 12:00 | 28.8N 130.0E | 25 kt | 1002 mb | Tropical depression |
| Jun 5, 18:00 | 29.0N 131.3E | 1004 mb | Extratropical | |
| Jun 6, 00:00 | 30.1N 135.0E | 1008 mb | Extratropical |
Other Western Pacific storms of 2021
- Tropical Storm DujuanWestern Pacific · 2021
- Super Typhoon SurigaeWestern Pacific · 2021
- Unnamed tropical stormWestern Pacific · 2021
- Tropical Storm KogumaWestern Pacific · 2021
- Typhoon ChampiWestern Pacific · 2021
- Unnamed tropical depressionWestern Pacific · 2021
- Unnamed tropical depressionWestern Pacific · 2021
- Typhoon In-FaWestern Pacific · 2021
- Typhoon CempakaWestern Pacific · 2021
- Tropical Storm NepartakWestern Pacific · 2021
- Unnamed tropical stormWestern Pacific · 2021
- Tropical Storm LupitWestern Pacific · 2021
- Tropical Storm MirinaeWestern Pacific · 2021
- Tropical Storm NidaWestern Pacific · 2021
- Unnamed tropical stormWestern Pacific · 2021
- Typhoon ConsonWestern Pacific · 2021
- Super Typhoon ChanthuWestern Pacific · 2021
- Tropical Storm DianmuWestern Pacific · 2021
- Super Typhoon MindulleWestern Pacific · 2021
- Tropical Storm LionrockWestern Pacific · 2021
- Tropical Storm KompasuWestern Pacific · 2021
- Tropical Storm NamtheunWestern Pacific · 2021
- Typhoon MalouWestern Pacific · 2021
- Unnamed tropical stormWestern Pacific · 2021
- Super Typhoon NyatohWestern Pacific · 2021
- Super Typhoon RaiWestern Pacific · 2021
- Unnamed tropical depressionWestern Pacific · 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.