Unnamed Tropical Depression, AL17 1978
Sep 18, 12:00 PM UTC – Sep 29, 12:00 PM UTC (11.0 days)
- Peak
- Tropical Depression
- Max sustained wind
- 35 mph (30 kt)
- Lowest pressure
- —
- Landfalls
- 0
Track
- Hurricane
- Tropical Storm
- Tropical Depression
- Other
- Large white-ringed dots: landfall
Every track point (45)
| UTC | Status | Position | Wind kt | mb | Note |
|---|---|---|---|---|---|
| 1978-09-18 12:00 | TD | 13.0°N 16.0°W | 20 | — | |
| 1978-09-18 18:00 | TD | 12.8°N 17.4°W | 20 | — | |
| 1978-09-19 00:00 | TD | 12.5°N 18.8°W | 25 | — | |
| 1978-09-19 06:00 | TD | 12.3°N 20.1°W | 25 | — | |
| 1978-09-19 12:00 | TD | 12.0°N 21.5°W | 30 | — | |
| 1978-09-19 18:00 | TD | 12.0°N 22.9°W | 30 | — | |
| 1978-09-20 00:00 | TD | 12.0°N 24.3°W | 30 | — | |
| 1978-09-20 06:00 | TD | 12.0°N 25.7°W | 30 | — | |
| 1978-09-20 12:00 | TD | 12.0°N 27.0°W | 30 | — | |
| 1978-09-20 18:00 | TD | 12.2°N 28.3°W | 30 | — | |
| 1978-09-21 00:00 | TD | 12.5°N 29.5°W | 30 | — | |
| 1978-09-21 06:00 | TD | 12.7°N 30.7°W | 30 | — | |
| 1978-09-21 12:00 | TD | 13.0°N 32.0°W | 30 | — | |
| 1978-09-21 18:00 | TD | 13.5°N 33.7°W | 30 | — | |
| 1978-09-22 00:00 | TD | 14.0°N 35.5°W | 30 | — | |
| 1978-09-22 06:00 | TD | 14.5°N 37.3°W | 30 | — | |
| 1978-09-22 12:00 | TD | 15.0°N 39.0°W | 30 | — | |
| 1978-09-22 18:00 | TD | 15.4°N 39.8°W | 30 | — | |
| 1978-09-23 00:00 | TD | 15.8°N 40.5°W | 30 | — | |
| 1978-09-23 06:00 | TD | 16.2°N 41.2°W | 30 | — | |
| 1978-09-23 12:00 | TD | 16.5°N 42.0°W | 30 | — | |
| 1978-09-23 18:00 | TD | 16.6°N 42.7°W | 30 | — | |
| 1978-09-24 00:00 | TD | 16.7°N 43.5°W | 30 | — | |
| 1978-09-24 06:00 | TD | 16.8°N 44.2°W | 30 | — | |
| 1978-09-24 12:00 | TD | 17.0°N 45.0°W | 30 | — | |
| 1978-09-24 18:00 | TD | 17.2°N 46.0°W | 30 | — | |
| 1978-09-25 00:00 | TD | 17.5°N 47.0°W | 30 | — | |
| 1978-09-25 06:00 | TD | 17.8°N 48.0°W | 30 | — | |
| 1978-09-25 12:00 | TD | 18.0°N 49.0°W | 30 | — | |
| 1978-09-25 18:00 | TD | 18.5°N 49.8°W | 30 | — | |
| 1978-09-26 00:00 | TD | 19.0°N 50.5°W | 30 | — | |
| 1978-09-26 06:00 | TD | 19.5°N 51.2°W | 30 | — | |
| 1978-09-26 12:00 | TD | 20.0°N 52.0°W | 30 | — | |
| 1978-09-26 18:00 | TD | 20.8°N 52.8°W | 30 | — | |
| 1978-09-27 00:00 | TD | 21.5°N 53.5°W | 30 | — | |
| 1978-09-27 06:00 | TD | 22.2°N 54.2°W | 30 | — | |
| 1978-09-27 12:00 | TD | 23.0°N 55.0°W | 30 | — | |
| 1978-09-27 18:00 | TD | 23.8°N 55.5°W | 25 | — | |
| 1978-09-28 00:00 | TD | 24.5°N 56.0°W | 25 | — | |
| 1978-09-28 06:00 | TD | 25.2°N 56.5°W | 25 | — | |
| 1978-09-28 12:00 | TD | 26.0°N 57.0°W | 25 | — | |
| 1978-09-28 18:00 | TD | 27.8°N 57.0°W | 25 | — | |
| 1978-09-29 00:00 | TD | 29.5°N 57.0°W | 20 | — | |
| 1978-09-29 06:00 | TD | 31.2°N 57.0°W | 20 | — | |
| 1978-09-29 12:00 | TD | 33.0°N 57.0°W | 20 | — |
From the National Hurricane Center's best-track archive (HURDAT2), its post-season reanalysis; values can differ from the advisories issued at the time. Source: hurdat2-1851-2025-092326.txt, hurdat2-nepac-1949-2025-092926.txt.