Tropical Storm Namtheun (2021)
Tropical Storm Namtheun peaked at 55 kt in the Western Pacific between October 8, 2021 and October 20, 2021, with a lowest pressure of 988 mb.
Radar
Reflectivity now over Tropical Storm Namtheun. 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
- October 8, 2021 to October 20, 2021
- Peak strength
- Tropical Storm, 55 kt (63 mph)
- Lowest pressure
- 988 mb (29.18 inHg)
- Landfall
- No; closest approach 849 km (528 mi)
- Accumulated cyclone energy
- 4.9
- Identifier
- WP232021
Deaths and damage
No source this site reads carries a casualty or damage figure for this storm.
Track
| Time (UTC) | Position | Wind | Pressure | Status |
|---|---|---|---|---|
| Oct 8, 18:00 | 15.7N 164.1E | 15 kt | 1009 mb | Disturbance |
| Oct 9, 00:00 | 16.2N 163.5E | 15 kt | 1010 mb | Disturbance |
| Oct 9, 06:00 | 16.8N 162.8E | 30 kt | 1005 mb | Tropical depression |
| Oct 9, 12:00 | 16.9N 161.9E | 30 kt | 1002 mb | Tropical depression |
| Oct 9, 18:00 | 16.8N 161.1E | 30 kt | 1002 mb | Tropical depression |
| Oct 10, 00:00 | 16.8N 160.6E | 40 kt | 998 mb | Tropical storm |
| Oct 10, 06:00 | 17.0N 159.6E | 35 kt | 998 mb | Tropical storm |
| Oct 10, 12:00 | 17.5N 159.3E | 40 kt | 996 mb | Tropical storm |
| Oct 10, 18:00 | 18.1N 158.7E | 40 kt | 996 mb | Tropical storm |
| Oct 11, 00:00 | 18.3N 157.5E | 45 kt | 998 mb | Tropical storm |
| Oct 11, 06:00 | 18.6N 155.9E | 45 kt | 996 mb | Tropical storm |
| Oct 11, 12:00 | 18.8N 154.9E | 45 kt | 995 mb | Tropical storm |
| Oct 11, 18:00 | 18.8N 153.8E | 45 kt | 996 mb | Tropical storm |
| Oct 12, 00:00 | 19.1N 153.0E | 40 kt | 999 mb | Tropical storm |
| Oct 12, 06:00 | 19.3N 152.0E | 35 kt | 1001 mb | Tropical storm |
| Oct 12, 12:00 | 19.9N 151.6E | 30 kt | 1003 mb | Tropical depression |
| Oct 12, 18:00 | 20.8N 151.9E | 30 kt | 1002 mb | Tropical depression |
| Oct 13, 00:00 | 22.2N 152.5E | 25 kt | 1004 mb | Tropical depression |
| Oct 13, 06:00 | 22.5N 152.9E | 25 kt | 1004 mb | Tropical depression |
| Oct 13, 12:00 | 23.3N 154.2E | 30 kt | 1003 mb | Tropical depression |
| Oct 13, 18:00 | 23.6N 155.3E | 35 kt | 998 mb | Tropical storm |
| Oct 14, 00:00 | 23.9N 156.4E | 40 kt | 999 mb | Tropical storm |
| Oct 14, 06:00 | 24.2N 157.3E | 45 kt | 995 mb | Tropical storm |
| Oct 14, 12:00 | 24.5N 158.0E | 45 kt | 995 mb | Tropical storm |
| Oct 14, 18:00 | 25.1N 159.3E | 35 kt | 1000 mb | Tropical storm |
| Oct 15, 00:00 | 25.7N 160.1E | 45 kt | 995 mb | Tropical storm |
| Oct 15, 06:00 | 26.3N 161.4E | 45 kt | 996 mb | Tropical storm |
| Oct 15, 12:00 | 27.2N 162.4E | 45 kt | 996 mb | Tropical storm |
| Oct 15, 18:00 | 28.2N 163.2E | 55 kt | 988 mb | Tropical storm |
| Oct 16, 00:00 | 29.4N 164.3E | 55 kt | 989 mb | Tropical storm |
| Oct 16, 06:00 | 30.9N 165.2E | 50 kt | 991 mb | Tropical storm |
| Oct 16, 12:00 | 31.8N 165.9E | 55 kt | 988 mb | Tropical storm |
| Oct 16, 18:00 | 32.9N 166.8E | 50 kt | 990 mb | Tropical storm |
| Oct 17, 00:00 | 33.8N 167.3E | 40 kt | 998 mb | Tropical storm |
| Oct 17, 06:00 | 35.0N 167.4E | 35 kt | 999 mb | Tropical storm |
| Oct 17, 12:00 | 36.5N 167.6E | 35 kt | 999 mb | Tropical storm |
| Oct 17, 18:00 | 38.2N 167.6E | 30 kt | 1001 mb | Tropical depression |
| Oct 18, 00:00 | 39.6N 168.7E | 30 kt | 1001 mb | Extratropical |
| Oct 18, 06:00 | 41.7N 170.9E | 1002 mb | Extratropical | |
| Oct 18, 12:00 | 43.4N 174.1E | 1000 mb | Extratropical | |
| Oct 18, 18:00 | 44.7N 178.8E | 1000 mb | Extratropical | |
| Oct 19, 00:00 | 45.7N 183.5E | Extratropical | ||
| Oct 19, 06:00 | 45.5N 188.1E | Extratropical | ||
| Oct 19, 12:00 | 44.5N 192.7E | Extratropical | ||
| Oct 19, 18:00 | 43.1N 197.7E | Extratropical | ||
| Oct 20, 00:00 | 41.8N 202.2E | Extratropical |
Other Western Pacific storms of 2021
- Tropical Storm DujuanWestern Pacific · 2021
- Super Typhoon SurigaeWestern Pacific · 2021
- Unnamed tropical stormWestern Pacific · 2021
- Tropical Storm Choi-WanWestern 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
- 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.