Irma (1978, North Atlantic)
Lowest pressure1,001 hPa
This is an archive, not a forecast or warning. For current storms follow your national meteorological service.
Peak wind45 kt (23 m/s)1-min
Duration3.2 days1978-10-02 – 1978-10-05
Strength rank in 197810 / 12by peak wind
All-time rank799 / 9861950–2025
Peak wind over time (kt)
Central pressure over time (hPa)
Compared with other 1978 storms (peak wind)
70 kt
55 kt
50 kt
45 kt
45 kt
45 kt
45 kt
40 kt
6-hourly track (UTC)
| Time | Lat | Lon | Wind kt | hPa |
|---|---|---|---|---|
| 1978-10-02 12:00 | 31.7 | -31.5 | 30 | 1,010 |
| 1978-10-02 18:00 | 32.0 | -31.5 | 30 | 1,006 |
| 1978-10-03 00:00 | 32.3 | -31.5 | 30 | – |
| 1978-10-03 06:00 | 32.6 | -31.5 | 30 | – |
| 1978-10-03 12:00 | 32.9 | -31.5 | 30 | – |
| 1978-10-03 18:00 | 33.4 | -31.5 | 30 | – |
| 1978-10-04 00:00 | 33.9 | -31.5 | 30 | – |
| 1978-10-04 06:00 | 34.5 | -31.5 | 30 | – |
| 1978-10-04 12:00 | 35.1 | -31.5 | 40 | 1,004 |
| 1978-10-04 18:00 | 35.8 | -31.4 | 45 | 1,002 |
| 1978-10-05 00:00 | 36.7 | -31.2 | 45 | 1,001 |
| 1978-10-05 06:00 | 38.2 | -30.4 | 40 | 1,002 |
| 1978-10-05 12:00 | 40.0 | -28.8 | 40 | – |
| 1978-10-05 18:00 | 43.0 | -26.2 | 40 | – |
Winds are NHC 1-minute sustained winds (not directly comparable with 10-minute typhoon winds).