2023 tropical cyclone season · eastern North Pacific
Hurricane Unnamed EP04 EP04 · EP042023
Hurricane Unnamed EP04 was tracked in the eastern North Pacific from 2023-07-20 to 2023-07-23 (3 days), peaking at 30 kt (TD) with a minimum pressure of 1006 hPa. 56 archived forecasts from NHC, ECMWF, ECMWF ENS, GFS, GEFS are verified against its best track.
- ATCF ID
- EP042023
- Basin
- eastern North Pacific
- Tracked
- 2023-07-20 → 2023-07-23 (3 days)
- Peak wind
- 30 kt · 15 m/s · TD
- Minimum pressure
- 1006 hPa
- Archived forecasts
- 56
- Sources
- NHC · ECMWF · ECMWF ENS · GFS · GEFS
Forecast track error (km)
| Source | 24 h | 48 h | 72 h | 120 h |
|---|---|---|---|---|
| ECMWF | 68 (1) | — | — | — |
| ECMWF ENS | 45 (2) | — | — | — |
| GFS | 123 (2) | — | — | — |
| GEFS | 69 (2) | — | — | — |
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 |
|---|---|---|---|---|
| 2023-07-20 12Z | 12.8°N 119.6°W | 30 | 1007 | TD |
| 2023-07-20 18Z | 13.0°N 120.2°W | 30 | 1007 | TD |
| 2023-07-21 00Z | 13.7°N 121.0°W | 30 | 1006 | TD |
| 2023-07-21 06Z | 14.4°N 121.9°W | 30 | 1006 | TD |
| 2023-07-21 12Z | 15.1°N 123.1°W | 30 | 1006 | TD |
| 2023-07-21 18Z | 15.6°N 124.5°W | 30 | 1007 | TD |
| 2023-07-22 00Z | 16.0°N 126.1°W | 30 | 1007 | TD |
| 2023-07-22 06Z | 16.3°N 127.5°W | 30 | 1007 | TD |
| 2023-07-22 12Z | 16.5°N 128.8°W | 25 | 1008 | TD |
| 2023-07-22 18Z | 16.6°N 129.9°W | 25 | 1009 | TD |
| 2023-07-23 00Z | 16.7°N 131.0°W | 25 | 1011 | TD |