Typhoon TracksHome › Western North Pacific 1977
Thelma (1977, Western North Pacific)
Lowest pressure950 hPa
This is an archive, not a forecast or warning. For current storms follow your national meteorological service.
Peak wind70 kt (36 m/s)10-min
Duration8.2 days1977-07-19 – 1977-07-27
Strength rank in 19777 / 21by lowest pressure
All-time rank572 / 19431951–2025
Peak wind over time (kt)
Central pressure over time (hPa)
Compared with other 1977 storms (lowest pressure)
920 hPa
920 hPa
925 hPa
940 hPa
945 hPa
950 hPa
965 hPa
965 hPa
965 hPa
970 hPa
970 hPa
Bar length = depth below 1013 hPa (longer = stronger).
6-hourly track (UTC)
| Time | Lat | Lon | Wind kt | hPa |
|---|---|---|---|---|
| 1977-07-19 00:00 | 10.0 | 138.0 | – | 1,008 |
| 1977-07-19 06:00 | 11.6 | 137.4 | – | 1,006 |
| 1977-07-19 12:00 | 12.4 | 137.0 | – | 1,006 |
| 1977-07-19 18:00 | 13.3 | 135.5 | – | 1,006 |
| 1977-07-20 00:00 | 14.0 | 133.6 | – | 1,006 |
| 1977-07-20 06:00 | 14.1 | 132.4 | – | 1,004 |
| 1977-07-20 12:00 | 14.4 | 131.5 | – | 1,004 |
| 1977-07-20 18:00 | 14.7 | 130.9 | – | 1,004 |
| 1977-07-21 00:00 | 14.9 | 130.1 | – | 1,004 |
| 1977-07-21 06:00 | 15.2 | 129.1 | – | 1,000 |
| 1977-07-21 12:00 | 15.6 | 128.1 | 45 | 992 |
| 1977-07-21 18:00 | 15.9 | 127.6 | 45 | 990 |
| 1977-07-22 00:00 | 16.2 | 127.1 | 50 | 985 |
| 1977-07-22 06:00 | 16.5 | 126.2 | 50 | 985 |
| 1977-07-22 12:00 | 16.9 | 125.4 | 55 | 975 |
| 1977-07-22 18:00 | 17.2 | 124.6 | 65 | 970 |
| 1977-07-23 00:00 | 17.6 | 123.8 | 65 | 960 |
| 1977-07-23 06:00 | 18.2 | 123.0 | 70 | 950 |
| 1977-07-23 12:00 | 18.7 | 122.2 | 70 | 955 |
| 1977-07-23 18:00 | 19.2 | 121.4 | 70 | 960 |
| 1977-07-24 00:00 | 19.6 | 120.7 | 70 | 960 |
| 1977-07-24 06:00 | 20.0 | 120.0 | 70 | 960 |
| 1977-07-24 12:00 | 20.6 | 119.7 | 70 | 960 |
| 1977-07-24 18:00 | 21.3 | 119.8 | 70 | 960 |
| 1977-07-25 00:00 | 22.3 | 120.2 | 60 | 965 |
| 1977-07-25 06:00 | 23.8 | 120.2 | 50 | 980 |
| 1977-07-25 12:00 | 24.9 | 119.8 | 45 | 992 |
| 1977-07-25 18:00 | 25.9 | 119.4 | – | 996 |
| 1977-07-26 00:00 | 27.4 | 118.6 | – | 998 |
| 1977-07-26 06:00 | 28.6 | 117.6 | – | 998 |
| 1977-07-26 12:00 | 29.4 | 117.1 | – | 998 |
| 1977-07-26 18:00 | 29.8 | 116.7 | – | 998 |
| 1977-07-27 00:00 | 30.2 | 116.8 | – | 998 |
| 1977-07-27 06:00 | 30.6 | 117.2 | – | – |
Winds are RSMC Tokyo (JMA) 10-minute sustained winds and central pressure (winds recorded from 1977).