2023 tropical cyclone season · western North Pacific
Typhoon Unnamed WP13 WP13 · WP132023
Typhoon Unnamed WP13 was tracked in the western North Pacific from 2023-09-23 to 2023-09-26 (4 days), peaking at 30 kt (TD) with a minimum pressure of 995 hPa. 38 archived forecasts from ECMWF, ECMWF ENS, GFS, GEFS are verified against its best track.
- ATCF ID
- WP132023
- Basin
- western North Pacific
- Tracked
- 2023-09-23 → 2023-09-26 (4 days)
- Peak wind
- 30 kt · 15 m/s · TD
- Minimum pressure
- 995 hPa
- Archived forecasts
- 38
- Sources
- ECMWF · ECMWF ENS · GFS · GEFS
Forecast track error (km)
| Source | 24 h | 48 h | 72 h | 120 h |
|---|---|---|---|---|
| ECMWF | 168 (1) | — | — | — |
| ECMWF ENS | 96 (2) | — | — | — |
| GFS | 112 (1) | — | — | — |
| GEFS | 65 (1) | — | — | — |
Mean great-circle distance to the best track at each lead time, counted while the system was a tropical or subtropical cyclone; the number of cases is in brackets.
Best track
Six-hourly positions of the US best track (JTWC / NHC, one-minute winds); grades on the Saffir–Simpson scale.
| Time (UTC) | Position | Wind (kt) | Pressure (hPa) | Grade |
|---|---|---|---|---|
| 2023-09-23 00Z | 15.5°N 116.1°E | 15 | 1010 | TD |
| 2023-09-23 06Z | 15.4°N 116.0°E | 15 | 1009 | TD |
| 2023-09-23 12Z | 15.3°N 115.4°E | 15 | 1007 | TD |
| 2023-09-23 18Z | 15.2°N 114.7°E | 15 | 1005 | TD |
| 2023-09-24 00Z | 15.1°N 114.0°E | 20 | 1000 | TD |
| 2023-09-24 06Z | 14.8°N 112.8°E | 20 | 998 | TD |
| 2023-09-24 12Z | 14.8°N 111.6°E | 20 | 998 | TD |
| 2023-09-24 18Z | 15.0°N 111.0°E | 20 | 998 | TD |
| 2023-09-25 00Z | 15.2°N 110.5°E | 25 | 997 | TD |
| 2023-09-25 06Z | 15.7°N 109.2°E | 30 | 995 | TD |
| 2023-09-25 12Z | 16.0°N 108.3°E | 30 | 997 | TD |
| 2023-09-25 18Z | 16.4°N 107.5°E | 30 | 998 | TD |
| 2023-09-26 00Z | 16.4°N 106.4°E | 30 | 1001 | TD |
| 2023-09-26 06Z | 16.6°N 105.3°E | 25 | 1003 | TD |
| 2023-09-26 12Z | 16.7°N 104.2°E | 20 | 1005 | TD |