Typhoon TracksHome › Western North Pacific 1978
Irma (1978, Western North Pacific)
Lowest pressure970 hPa
This is an archive, not a forecast or warning. For current storms follow your national meteorological service.
Peak wind65 kt (33 m/s)10-min
Duration6.5 days1978-09-09 – 1978-09-16
Strength rank in 197815 / 30by lowest pressure
All-time rank931 / 19431951–2025
Peak wind over time (kt)
Central pressure over time (hPa)
Compared with other 1978 storms (lowest pressure)
960 hPa
965 hPa
965 hPa
965 hPa
970 hPa
970 hPa
972 hPa
975 hPa
975 hPa
980 hPa
980 hPa
Bar length = depth below 1013 hPa (longer = stronger).
6-hourly track (UTC)
| Time | Lat | Lon | Wind kt | hPa |
|---|---|---|---|---|
| 1978-09-09 12:00 | 21.0 | 123.8 | – | – |
| 1978-09-09 18:00 | 21.2 | 123.2 | – | – |
| 1978-09-10 00:00 | 21.3 | 122.6 | – | – |
| 1978-09-10 06:00 | 21.1 | 121.9 | – | – |
| 1978-09-10 12:00 | 21.3 | 121.6 | – | – |
| 1978-09-10 18:00 | 21.4 | 121.5 | – | 1,000 |
| 1978-09-11 00:00 | 21.9 | 121.6 | – | 998 |
| 1978-09-11 06:00 | 22.6 | 121.9 | – | 998 |
| 1978-09-11 12:00 | 23.3 | 122.2 | – | 998 |
| 1978-09-11 18:00 | 24.1 | 122.5 | 45 | 994 |
| 1978-09-12 00:00 | 24.9 | 122.7 | 50 | 990 |
| 1978-09-12 06:00 | 25.4 | 123.0 | 50 | 990 |
| 1978-09-12 12:00 | 25.9 | 123.6 | 55 | 990 |
| 1978-09-12 18:00 | 26.5 | 123.5 | 55 | 980 |
| 1978-09-13 00:00 | 27.2 | 123.4 | 55 | 980 |
| 1978-09-13 06:00 | 27.8 | 123.6 | 60 | 975 |
| 1978-09-13 12:00 | 28.5 | 123.9 | 60 | 975 |
| 1978-09-13 18:00 | 29.2 | 124.3 | 60 | 975 |
| 1978-09-14 00:00 | 30.0 | 124.8 | 60 | 975 |
| 1978-09-14 06:00 | 30.8 | 125.3 | 60 | 975 |
| 1978-09-14 12:00 | 31.5 | 126.1 | 60 | 975 |
| 1978-09-14 18:00 | 32.3 | 127.2 | 65 | 970 |
| 1978-09-15 00:00 | 33.2 | 128.9 | 65 | 970 |
| 1978-09-15 06:00 | 34.0 | 130.7 | 60 | 975 |
| 1978-09-15 12:00 | 34.6 | 133.0 | 45 | 992 |
| 1978-09-15 18:00 | 35.1 | 135.1 | – | 998 |
| 1978-09-16 00:00 | 35.4 | 136.8 | – | – |
Winds are RSMC Tokyo (JMA) 10-minute sustained winds and central pressure (winds recorded from 1977).