2023 tropical cyclone season · eastern North Pacific
Hurricane Unnamed EP12 EP12 · EP122023
Hurricane Unnamed EP12 was tracked in the eastern North Pacific from 2023-09-15 to 2023-09-18 (3 days), peaking at 30 kt (TD) with a minimum pressure of 1006 hPa. 83 archived forecasts from NHC, ECMWF, ECMWF ENS, GFS, GEFS are verified against its best track; at 48 hours the closest was ECMWF ENS, 132 km off on average.
- ATCF ID
- EP122023
- Basin
- eastern North Pacific
- Tracked
- 2023-09-15 → 2023-09-18 (3 days)
- Peak wind
- 30 kt · 15 m/s · TD
- Minimum pressure
- 1006 hPa
- Archived forecasts
- 83
- Sources
- NHC · ECMWF · ECMWF ENS · GFS · GEFS
Forecast track error (km)
| Source | 24 h | 48 h | 72 h | 120 h |
|---|---|---|---|---|
| NHC | 119 (5) | 289 (2) | — | — |
| ECMWF | 51 (2) | 143 (2) | — | — |
| ECMWF ENS | 50 (3) | 132 (3) | — | — |
| GFS | 107 (7) | 285 (3) | — | — |
| GEFS | 98 (7) | 227 (3) | — | — |
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 |
|---|---|---|---|---|
| 2023-09-15 12Z | 15.0°N 135.3°W | 25 | 1007 | TD |
| 2023-09-15 18Z | 15.0°N 135.8°W | 30 | 1006 | TD |
| 2023-09-16 00Z | 14.7°N 136.4°W | 30 | 1006 | TD |
| 2023-09-16 06Z | 14.6°N 137.2°W | 30 | 1006 | TD |
| 2023-09-16 12Z | 14.5°N 138.1°W | 30 | 1006 | TD |
| 2023-09-16 18Z | 14.3°N 139.2°W | 30 | 1006 | TD |
| 2023-09-17 00Z | 13.8°N 140.3°W | 30 | 1007 | TD |
| 2023-09-17 06Z | 13.5°N 141.4°W | 30 | 1007 | TD |
| 2023-09-17 12Z | 13.4°N 142.7°W | 30 | 1007 | TD |
| 2023-09-17 18Z | 13.2°N 144.0°W | 30 | 1007 | TD |
| 2023-09-18 00Z | 12.8°N 145.3°W | 30 | 1007 | TD |
| 2023-09-18 06Z | 12.3°N 146.5°W | 30 | 1007 | TD |
| 2023-09-18 12Z | 11.9°N 147.8°W | 25 | 1008 | TD |