Unnamed tropical depression (2021)
Unnamed tropical depression peaked at 30 kt in the Western Pacific between December 15, 2021 and December 17, 2021, with a lowest pressure of 1003 mb, and made landfall.
Track and intensity
The whole track of Unnamed tropical depression, 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
- Western Pacific
- Dates
- December 15, 2021 to December 17, 2021
- Peak strength
- Tropical Depression, 30 kt (35 mph)
- Lowest pressure
- 1003 mb (29.62 inHg)
- Landfall
- Yes
- Accumulated cyclone energy
- 0.0
- Identifier
- WP292021
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 15, 00:00 | 5.2N 107.7E | 15 kt | 1010 mb | Disturbance |
| Dec 15, 06:00 | 5.0N 107.4E | 20 kt | 1005 mb | Disturbance |
| Dec 15, 12:00 | 4.8N 107.1E | 20 kt | 1005 mb | Disturbance |
| Dec 15, 18:00 | 4.7N 106.6E | 20 kt | 1005 mb | Disturbance |
| Dec 16, 00:00 | 4.7N 106.2E | 20 kt | 1006 mb | Disturbance |
| Dec 16, 06:00 | 4.4N 105.1E | 25 kt | 1006 mb | Tropical depression |
| Dec 16, 12:00 | 4.3N 104.5E | 30 kt | 1004 mb | Tropical depression |
| Dec 16, 18:00 | 4.2N 103.0E | 30 kt | 1003 mb | Tropical depression |
| Dec 17, 00:00 | 4.2N 103.0E | 25 kt | 1005 mb | Tropical depression |
| Dec 17, 06:00 | 4.0N 101.9E | 20 kt | 1008 mb | Disturbance |
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
- Tropical Storm NamtheunWestern Pacific · 2021
- Typhoon MalouWestern Pacific · 2021
- Unnamed tropical stormWestern Pacific · 2021
- Super Typhoon NyatohWestern Pacific · 2021
- Super Typhoon RaiWestern 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.