Typhoon TracksHome › Western North Pacific 1971
Ivy (1971, Western North Pacific)
Lowest pressure990 hPa
This is an archive, not a forecast or warning. For current storms follow your national meteorological service.
Peak wind–10-min
Duration6.8 days1971-07-04 – 1971-07-10
Strength rank in 197130 / 36by lowest pressure
All-time rank1482 / 19431951–2025
Central pressure over time (hPa)
Compared with other 1971 storms (lowest pressure)
980 hPa
985 hPa
988 hPa
990 hPa
990 hPa
990 hPa
990 hPa
992 hPa
994 hPa
995 hPa
1000 hPa
Bar length = depth below 1013 hPa (longer = stronger).
6-hourly track (UTC)
| Time | Lat | Lon | Wind kt | hPa |
|---|---|---|---|---|
| 1971-07-04 00:00 | 23.0 | 137.0 | – | 1,004 |
| 1971-07-04 06:00 | 22.4 | 136.5 | – | 1,004 |
| 1971-07-04 12:00 | 21.9 | 135.9 | – | 1,004 |
| 1971-07-04 18:00 | 21.6 | 135.7 | – | 1,002 |
| 1971-07-05 00:00 | 21.6 | 135.4 | – | 1,000 |
| 1971-07-05 06:00 | 22.6 | 134.8 | – | 1,000 |
| 1971-07-05 12:00 | 23.8 | 134.5 | – | 1,000 |
| 1971-07-05 18:00 | 26.1 | 134.2 | – | 994 |
| 1971-07-06 00:00 | 28.2 | 133.7 | – | 994 |
| 1971-07-06 06:00 | 29.3 | 132.9 | – | 992 |
| 1971-07-06 12:00 | 29.8 | 132.7 | – | 990 |
| 1971-07-06 18:00 | 30.8 | 133.3 | – | 990 |
| 1971-07-07 00:00 | 32.4 | 134.6 | – | 990 |
| 1971-07-07 06:00 | 33.7 | 136.1 | – | 990 |
| 1971-07-07 12:00 | 35.0 | 137.9 | – | 992 |
| 1971-07-07 18:00 | 36.2 | 140.1 | – | 994 |
| 1971-07-08 00:00 | 37.6 | 142.3 | – | 996 |
| 1971-07-08 06:00 | 38.3 | 145.2 | – | 994 |
| 1971-07-08 12:00 | 38.5 | 148.4 | – | 996 |
| 1971-07-08 18:00 | 38.7 | 151.9 | – | 996 |
| 1971-07-09 00:00 | 38.9 | 155.4 | – | 998 |
| 1971-07-09 06:00 | 39.2 | 158.4 | – | 998 |
| 1971-07-09 12:00 | 39.3 | 161.8 | – | 998 |
| 1971-07-09 18:00 | 39.6 | 165.0 | – | 998 |
| 1971-07-10 00:00 | 40.1 | 168.2 | – | 996 |
| 1971-07-10 06:00 | 41.1 | 172.0 | – | 998 |
| 1971-07-10 12:00 | 43.7 | 175.6 | – | 998 |
| 1971-07-10 18:00 | 46.0 | 179.0 | – | 996 |
Winds are RSMC Tokyo (JMA) 10-minute sustained winds and central pressure (winds recorded from 1977).