World Map › Tropical Cyclones Since 1950 › 1974
Tropical Cyclone
Typhoon Irma (1974)
20 November 1974 · Western Pacific · Category 4
Typhoon Irma formed in the Western Pacific basin on 20 November 1974 and lasted 13 days. Its sustained winds reached 213 km/h, Category 4 on the Saffir-Simpson scale, with a minimum pressure of 940 hPa. It made landfall in the Philippines and People's Republic of China.
- Formed
- 20 November 1974
- Dissipated
- 3 December 1974
- Duration
- 13 days
- Basin
- Western Pacific
- Maximum Sustained Wind
- 213 km/h (115 kt)
- Category (Saffir-Simpson)
- 4
- Minimum Pressure
- 940 hPa
Countries Hit
- Cat. 1Philippines148 km/h
- TSPeople's Republic of China65 km/h
Other Cyclones of the Season
- Cat. 4Typhoon Gloria222 km/h
- Cat. 3Typhoon Agnes194 km/h
- Cat. 2Typhoon Gilda167 km/h
- Cat. 1Typhoon Bess120 km/h
Sources: IBTrACS v04r01, NOAA National Centers for Environmental Information (Knapp et al., 2010) · Wikidata · Natural Earth