[Quick Archive Overview]Typhoon No. 4 (No. 197004, its historical sequence number before 1981) was a 1970 Northwest Pacific typhoon. Its peak intensity was severe tropical storm, with maximum winds of 25 m/s and a minimum central pressure of 990 hPa. It did not make landfall in China and was designated dissipated on August 5, 1970. A total of 47 track points were recorded throughout its lifetime.
Code note: The international standardized typhoon numbering system for the Northwest Pacific has been assigned by the JMA (Japan), the Tokyo Regional Professional Meteorological Centre, since 1981. This system did not exist in 1970. The number 197004 is the historical sequence number retained by the CMA. The numbering systems used by the JMA (Japan), the Joint Typhoon Warning Center in the United States, and China’s meteorological authorities that year may differ for the same typhoon and cannot be directly compared.
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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Overview of Typhoon 4
At 08:00 on 1970-07-26, Typhoon 4 was located over the Northwest Pacific at 20.8°N, 139.3°E. Its initial intensity was tropical depression.
It peaked at Severe Tropical Storm intensity with max winds of 25 m/s (~90 km/h) and a minimum central pressure of 990hPa, recorded at 1970-08-02 08:00.
After 14:00 on 1970-08-05, Typhoon 4 gradually weakened and was numbered off at 14:00 on 1970-08-05. Its lifecycle includes 47 track points.
Typhoon 4 route data
| Time | Position | Intensity | Wind · Pressure | Move toward |
|---|
| 07-26 08:00 | 20.8°N
139.3°E | Tropical Depression | 10 m/s
1009 hPa | - |
| 07-27 02:00 | 20.4°N
137.3°E | Tropical Depression | 12 m/s
1008 hPa | WSW |
| 07-27 20:00 | 19.9°N
135°E | Tropical Depression | 10 m/s
1006 hPa | W |
| 07-28 14:00 | 19.7°N
132°E | Tropical Depression | 10 m/s
1005 hPa | WSW |
| 07-29 08:00 | 19.7°N
129.1°E | Tropical Depression | 10 m/s
1004 hPa | W |
| 07-30 02:00 | 20.2°N
126.6°E | Tropical Depression | 10 m/s
1004 hPa | WNW |
| 07-30 20:00 | 20.6°N
124.9°E | Tropical Depression | 10 m/s
1004 hPa | W |
| 07-31 14:00 | 20.8°N
123.5°E | Tropical Depression | 12 m/s
1002 hPa | W |
| 08-01 08:00 | 21.2°N
122.2°E | Tropical Storm | 20 m/s
996 hPa | NW |
| 08-01 14:00 | 24.1°N
120.1°E | Tropical Depression | 15 m/s
998 hPa | - |
| 08-02 02:00 | 21.4°N
119.1°E | Tropical Storm | 20 m/s
996 hPa | SSW |
| 08-02 08:00 | 25.3°N
119.9°E | Tropical Depression | 12 m/s
999 hPa | - |
| 08-03 02:00 | 22.5°N
114.9°E | Tropical Storm | 20 m/s
993 hPa | W |
| 08-03 20:00 | 23.6°N
111.1°E | Tropical Depression | 9 m/s
995 hPa | W |
| 08-04 14:00 | 24.9°N
109°E | Tropical Depression | 9 m/s
995 hPa | NW |
| 08-05 08:00 | 26°N
108.2°E | Tropical Depression | 9 m/s
998 hPa | N |
| 08-05 14:00 | 26.5°N
108.5°E | Tropical Depression | 9 m/s
1000 hPa | NNE |
Sampled rows shown; all 47 track points are available on the interactive map or via the public API .
FAQ
Typhoon 4 was the 1970s Typhoon.
The number 197004 for Typhoon No. 4 is the historical sequence number retained by the CMA, meaning the fourth typhoon of 1970. International standardized typhoon numbering for the Northwest Pacific began only in 1981. Before then, individual agencies numbered typhoons independently, so the numbers assigned by the JMA (Japan), the Joint Typhoon Warning Center in the United States, and China’s meteorological authorities may differ for the same typhoon and cannot be directly compared.
Where does the track data for Typhoon No. 4 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 4?
Typhoon 4 reached peak intensity as a severe tropical storm, with maximum winds of 25 m/s and a minimum central pressure of 990 hPa.
Is the Typhoon 4 landfall?
According to records, the Typhoon 4 was not in our coastal landfall.
Where can I view typhoon 4's live track map?
TyphoonSays (taifengshuo.com) provides track history for typhoon 4, forecast comparison, wind range with IntensityTrend, page address: https://taifengshuo.com/typhoon/197004.
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