Typhoon TracksHome › Western North Pacific 1970
Joan (1970, Western North Pacific)
Lowest pressure905 hPa
This is an archive, not a forecast or warning. For current storms follow your national meteorological service.
Peak wind–10-min
Duration9.8 days1970-10-09 – 1970-10-18
Strength rank in 19704 / 25by lowest pressure
All-time rank76 / 19431951–2025
Central pressure over time (hPa)
Compared with other 1970 storms (lowest pressure)
900 hPa
905 hPa
905 hPa
905 hPa
910 hPa
910 hPa
940 hPa
940 hPa
945 hPa
Bar length = depth below 1013 hPa (longer = stronger).
6-hourly track (UTC)
| Time | Lat | Lon | Wind kt | hPa |
|---|---|---|---|---|
| 1970-10-09 00:00 | 7.6 | 147.0 | – | 1,004 |
| 1970-10-09 06:00 | 7.9 | 145.4 | – | 1,002 |
| 1970-10-09 12:00 | 8.3 | 143.6 | – | 1,002 |
| 1970-10-09 18:00 | 8.9 | 142.0 | – | 1,000 |
| 1970-10-10 00:00 | 9.5 | 140.5 | – | 998 |
| 1970-10-10 06:00 | 10.2 | 138.9 | – | 995 |
| 1970-10-10 12:00 | 10.7 | 137.2 | – | 990 |
| 1970-10-10 18:00 | 10.9 | 135.3 | – | 990 |
| 1970-10-11 00:00 | 11.1 | 133.4 | – | 985 |
| 1970-10-11 06:00 | 11.4 | 131.7 | – | 975 |
| 1970-10-11 12:00 | 11.6 | 130.3 | – | 975 |
| 1970-10-11 18:00 | 11.5 | 129.1 | – | 965 |
| 1970-10-12 00:00 | 11.4 | 128.0 | – | 950 |
| 1970-10-12 06:00 | 11.6 | 127.2 | – | 935 |
| 1970-10-12 12:00 | 12.2 | 126.6 | – | 920 |
| 1970-10-12 18:00 | 12.7 | 125.7 | – | 905 |
| 1970-10-13 00:00 | 13.3 | 124.7 | – | 910 |
| 1970-10-13 06:00 | 13.6 | 123.5 | – | 925 |
| 1970-10-13 12:00 | 13.8 | 122.5 | – | 945 |
| 1970-10-13 18:00 | 14.2 | 121.5 | – | 960 |
| 1970-10-14 00:00 | 14.5 | 120.4 | – | 970 |
| 1970-10-14 06:00 | 14.9 | 119.0 | – | 970 |
| 1970-10-14 12:00 | 14.4 | 117.8 | – | 970 |
| 1970-10-14 18:00 | 14.7 | 117.0 | – | 965 |
| 1970-10-15 00:00 | 14.8 | 115.9 | – | 965 |
| 1970-10-15 06:00 | 14.9 | 115.3 | – | 965 |
| 1970-10-15 12:00 | 15.3 | 114.6 | – | 960 |
| 1970-10-15 18:00 | 15.7 | 113.8 | – | 955 |
| 1970-10-16 00:00 | 16.4 | 113.0 | – | 950 |
| 1970-10-16 06:00 | 17.4 | 112.3 | – | 955 |
| 1970-10-16 12:00 | 18.4 | 111.9 | – | 960 |
| 1970-10-16 18:00 | 19.1 | 111.4 | – | 965 |
| 1970-10-17 00:00 | 19.7 | 111.0 | – | 965 |
| 1970-10-17 06:00 | 20.0 | 110.6 | – | 970 |
| 1970-10-17 12:00 | 20.5 | 110.3 | – | 985 |
| 1970-10-17 18:00 | 21.2 | 110.1 | – | 996 |
| 1970-10-18 00:00 | 21.4 | 110.1 | – | 1,000 |
| 1970-10-18 06:00 | 21.8 | 110.5 | – | 1,002 |
| 1970-10-18 12:00 | 21.7 | 111.2 | – | 1,008 |
| 1970-10-18 18:00 | 21.2 | 111.6 | – | – |
Winds are RSMC Tokyo (JMA) 10-minute sustained winds and central pressure (winds recorded from 1977).