[Quick Archive Overview]Typhoon Helen (No.197517, a historical identifier used before 1981) was a 1975 Northwest Pacific typhoon. Its peak intensity was tropical storm, with maximum winds of 20m/s and a minimum central pressure of 998hPa. It did not make landfall in China, was designated off the numbering system on 1975-11-04, and has 15 recorded track points throughout its lifetime.
Numbering note: International cyclone numbering in the Northwest Pacific has been assigned by the JMA (Japan), the Regional Specialized Meteorological Center in Tokyo, since 1981. This system did not exist in 1975. The identifier 197517 is the historical number continued by the CMA. The numbers assigned that year by the JMA (Japan), the Joint Typhoon Warning Center in the USA, and Chinese meteorological agencies for the same typhoon may differ and cannot be compared directly.
Track data sources: China Meteorological Administration Tropical Cyclone Best Track Dataset (CMA-STI); wind speeds are 2-minute sustained wind speeds.
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Typhoon Helen's Route
Typhoon Helen at 1975-11-01 08:00 at 14.5°N, 124.5°E over the Northwest Pacific; initial intensity: Tropical Depression.
It peaked at Tropical Storm intensity with max winds of 20 m/s (~72 km/h) and a minimum central pressure of 998hPa, recorded at 1975-11-03 20:00.
After 1975-11-04 20:00, Typhoon Helen gradually weakened and was numbered off at 20:00 on 1975-11-04. Its lifecycle included 15 track points.
Typhoon Helen routes
| Time | Position | Intensity | Wind · Pressure | Move toward |
|---|
| 11-01 08:00 | 14.5°N
124.5°E | Tropical Depression | 10 m/s
1008 hPa | - |
| 11-01 14:00 | 14.4°N
123.5°E | Tropical Depression | 10 m/s
1007 hPa | W |
| 11-01 20:00 | 14.4°N
122.9°E | Tropical Depression | 10 m/s
1005 hPa | W |
| 11-02 02:00 | 14.5°N
122.2°E | Tropical Depression | 10 m/s
1005 hPa | W |
| 11-02 08:00 | 14.6°N
121.5°E | Tropical Depression | 12 m/s
1005 hPa | W |
| 11-02 14:00 | 14.2°N
120.1°E | Tropical Depression | 12 m/s
1005 hPa | WSW |
| 11-02 20:00 | 13.8°N
118.7°E | Tropical Depression | 15 m/s
1005 hPa | WSW |
| 11-03 02:00 | 13.5°N
117.4°E | Tropical Depression | 15 m/s
1005 hPa | WSW |
| 11-03 08:00 | 13.5°N
115.9°E | Tropical Depression | 15 m/s
1004 hPa | W |
| 11-03 14:00 | 13.5°N
114.4°E | Tropical Depression | 15 m/s
1004 hPa | W |
| 11-03 20:00 | 13.9°N
113.7°E | Tropical Storm | 20 m/s
998 hPa | WNW |
| 11-04 02:00 | 14.2°N
112.8°E | Tropical Storm | 20 m/s
998 hPa | WNW |
| 11-04 08:00 | 14.4°N
112°E | Tropical Storm | 20 m/s
998 hPa | WNW |
| 11-04 14:00 | 15°N
110.3°E | Tropical Storm | 20 m/s
998 hPa | WNW |
| 11-04 20:00 | 15.4°N
108.6°E | Tropical Depression | 10 m/s
1008 hPa | WNW |
FAQ
Typhoon Helen was the 1975 Typhoon.
Helen’s identifier 197517 is the historical number continued by the CMA, meaning the 17th numbered tropical cyclone of 1975. Its international name was HELEN. International cyclone numbering in the Northwest Pacific did not begin until 1981. Before then, different agencies used their own numbering systems, so the numbers assigned by the JMA (Japan), the Joint Typhoon Warning Center in the USA, and Chinese meteorological agencies for the same typhoon may differ and cannot be compared directly.
Where does Typhoon Helen's track data come from?
Track data sources: China Meteorological Administration Tropical Cyclone Best Track Dataset (CMA-STI); wind speeds are 2-minute sustained wind speeds.
What is the highest level of Typhoon Helen?
Typhoon Helen peak intensity is Tropical Storm, max wind 20m/s, minimum central pressure 998 hPa.
Typhoon Helen Landfall?
According to records, Typhoon Helen is not in our coastal landfall.
Where can I view typhoon Helen's live track map?
TyphoonSays (taifengshuo.com) provides typhoon Helen's Track history map, multinational meteorological agency Forecast comparison, windshield range with IntensityTrend, page address: https://taifengshuo.com/typhoon/197517.
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