Typhoon TracksHome › Western North Pacific 1971
Irma (1971, Western North Pacific)
Lowest pressure885 hPa
This is an archive, not a forecast or warning. For current storms follow your national meteorological service.
Peak wind–10-min
Duration10.2 days1971-11-07 – 1971-11-17
Strength rank in 19711 / 36by lowest pressure
All-time rank10 / 19431951–2025
Central pressure over time (hPa)
Compared with other 1971 storms (lowest pressure)
885 hPa
890 hPa
900 hPa
905 hPa
910 hPa
915 hPa
Bar length = depth below 1013 hPa (longer = stronger).
6-hourly track (UTC)
| Time | Lat | Lon | Wind kt | hPa |
|---|---|---|---|---|
| 1971-11-07 00:00 | 6.1 | 140.9 | – | – |
| 1971-11-07 06:00 | 6.4 | 141.4 | – | – |
| 1971-11-07 12:00 | 6.7 | 142.2 | – | 1,004 |
| 1971-11-07 18:00 | 6.8 | 142.6 | – | 1,002 |
| 1971-11-08 00:00 | 6.9 | 142.7 | – | 1,000 |
| 1971-11-08 06:00 | 7.3 | 142.9 | – | 992 |
| 1971-11-08 12:00 | 7.4 | 142.6 | – | 994 |
| 1971-11-08 18:00 | 7.8 | 142.1 | – | 994 |
| 1971-11-09 00:00 | 8.2 | 141.6 | – | 994 |
| 1971-11-09 06:00 | 7.9 | 141.2 | – | 985 |
| 1971-11-09 12:00 | 8.6 | 141.4 | – | 980 |
| 1971-11-09 18:00 | 9.4 | 140.8 | – | 985 |
| 1971-11-10 00:00 | 10.1 | 140.2 | – | 985 |
| 1971-11-10 06:00 | 11.2 | 139.4 | – | 985 |
| 1971-11-10 12:00 | 12.3 | 138.3 | – | 980 |
| 1971-11-10 18:00 | 13.1 | 136.9 | – | 975 |
| 1971-11-11 00:00 | 13.8 | 135.6 | – | 965 |
| 1971-11-11 06:00 | 14.4 | 134.2 | – | 945 |
| 1971-11-11 12:00 | 15.0 | 132.9 | – | 910 |
| 1971-11-11 18:00 | 16.0 | 131.5 | – | 885 |
| 1971-11-12 00:00 | 16.9 | 130.3 | – | 890 |
| 1971-11-12 06:00 | 17.9 | 129.2 | – | 895 |
| 1971-11-12 12:00 | 18.7 | 128.4 | – | 905 |
| 1971-11-12 18:00 | 19.4 | 127.9 | – | 915 |
| 1971-11-13 00:00 | 20.0 | 127.5 | – | 925 |
| 1971-11-13 06:00 | 20.8 | 127.1 | – | 930 |
| 1971-11-13 12:00 | 21.6 | 126.9 | – | 940 |
| 1971-11-13 18:00 | 22.3 | 126.8 | – | 945 |
| 1971-11-14 00:00 | 23.3 | 127.1 | – | 950 |
| 1971-11-14 06:00 | 24.3 | 127.5 | – | 955 |
| 1971-11-14 12:00 | 25.5 | 128.4 | – | 960 |
| 1971-11-14 18:00 | 26.4 | 129.7 | – | 960 |
| 1971-11-15 00:00 | 27.6 | 131.8 | – | 965 |
| 1971-11-15 06:00 | 29.1 | 134.5 | – | 965 |
| 1971-11-15 12:00 | 30.7 | 137.9 | – | 970 |
| 1971-11-15 18:00 | 31.5 | 141.2 | – | 975 |
| 1971-11-16 00:00 | 31.8 | 145.6 | – | 980 |
| 1971-11-16 06:00 | 32.0 | 151.7 | – | 988 |
| 1971-11-16 12:00 | 32.1 | 157.2 | – | 994 |
| 1971-11-16 18:00 | 31.7 | 162.4 | – | 1,000 |
| 1971-11-17 00:00 | 31.6 | 167.9 | – | 1,000 |
| 1971-11-17 06:00 | 31.8 | 174.9 | – | 1,002 |
Winds are RSMC Tokyo (JMA) 10-minute sustained winds and central pressure (winds recorded from 1977).