Storm history › West Pacific › 1978 season
Typhoon Irma (1978)
Irma was a Category 1 typhoon of the 1978 West Pacific season. It was tracked from September 9, 1978 to September 16, 1978, about 7 days, and covered 1,617 miles.
At its peak it had winds of 75 mph (120 km/h) and a lowest pressure of 970 mb.
Its closest pass to a major city was 4 miles from Hiroshima, Japan.
- Peak wind
- 75 mph
- Lowest pressure
- 970 mb
- Strongest
- Category 1 typhoon
- Duration
- 7 days
- Track length
- 1,617 mi
- Energy (ACE)
- 3.8
DepressionTropical stormCat 1Cat 2Cat 3Cat 4Cat 5
Closest pass to major cities
| City | Closest pass |
|---|---|
| Hiroshima, Japan | 4 mi (7 km) |
| Okayama, Japan | 12 mi (19 km) |
| Himeji, Japan | 12 mi (20 km) |
| Kitakyushu, Japan | 13 mi (20 km) |
| Kyoto, Japan | 13 mi (21 km) |
| Kurashiki, Japan | 14 mi (22 km) |
| Fukuyama, Japan | 14 mi (23 km) |
How it compares
- Peak winds: 1228th highest of 2,271 West Pacific storms on record, tied with Typhoon Trami (2024), Typhoon Ma-On (2022), Typhoon Champi (2021) and 91 more.
- Lowest pressure: 928th lowest of 2,047 West Pacific storms with a recorded pressure, tied with Typhoon Bang-Lang (2026), Typhoon Dujuan (2026), Typhoon Wipha (2025) and 66 more.
- Energy: 2% of the 1978 West Pacific season's ACE.