Typhoon Nina trajectory analysis
Track and Movement Characteristics
The lifecycle of Typhoon Nina (197503) began over the open waters of the Northwest Pacific. Its overall track showed a pronounced northwestward trend, followed by a deep inland penetration and gradual weakening and dissipation. From its initial position at 17.6°N, 138.2°E to its peak position at 23.4°N, 123.6°E, the system advanced steadily toward the northwest, spanning about 14.6° of longitude and 5.8° of latitude. This reflected the typical movement under the steering flow on the southern side of the subtropical high. Notably, the typhoon made no landfall, yet its track extended deep into inland areas north of 30°N, finally coming to rest near 31.5°N, 111.6°E, indicating the remarkable inland penetration of its residual circulation. In terms of movement speed, it moved relatively quickly over the open ocean in its early stage. After entering the higher-latitude interior, its longitude and longitude changes became smaller and its movement slowed markedly, lingering near the boundary between Hubei and Hunan before its energy was fully exhausted.
Intensity evolution and historical comparison
Nina’s intensity evolution followed a typical pattern of rapid intensification, peak maintenance, and abrupt weakening. It developed from a tropical depression into a tropical storm on July 31, then intensified explosively from August 1 to 3. During the 18-hour period from 08:00 on August 2 to 02:00 on August 3, central pressure plummeted from 930 hPa to 900 hPa, while maximum wind speed surged from 50 m/s to 65 m/s, reaching super typhoon intensity and demonstrating exceptional development efficiency. However, the peak phase was very brief. By 20:00 on August 3, its intensity had already fallen rapidly to typhoon level, at 35 m/s and 970 hPa, before weakening further to a tropical depression over the following two days.
Compared with previous typhoons of the same name, Nina in 1975 had a decisive intensity advantage. Its minimum central pressure of 900 hPa was far lower than those of Nina in 1987, 1984, 1992, and 1995, at 945 hPa, 987 hPa, 995 hPa, and 995 hPa, respectively. The peak intensities of the other same-named typhoons remained at the severe typhoon or tropical storm levels, making 1975 Nina the only one to reach super typhoon status. Its extreme intensity and deep low-pressure structure were exceptionally rare in the historical records of the period.
Typhoon Nina routes
| Time | Position | Intensity | Wind · Pressure | Move toward |
|---|
| 07-30 08:00 | 17.6°N
138.2°E | Tropical Depression | 10 m/s
1005 hPa | - |
| 07-30 20:00 | 17.2°N
136.4°E | Tropical Depression | 10 m/s
1003 hPa | WSW |
| 07-31 08:00 | 16.9°N
134.6°E | Tropical Depression | 15 m/s
1000 hPa | W |
| 07-31 20:00 | 17.2°N
133.1°E | Tropical Storm | 20 m/s
996 hPa | WNW |
| 08-01 08:00 | 18.5°N
132.3°E | Severe Tropical Storm | 25 m/s
980 hPa | NNW |
| 08-01 20:00 | 20.4°N
130.4°E | Severe Tropical Storm | 30 m/s
970 hPa | NW |
| 08-02 08:00 | 21.9°N
128.2°E | Severe Typhoon | 50 m/s
930 hPa | WNW |
| 08-02 20:00 | 23.1°N
124.9°E | Super Typhoon | 65 m/s
900 hPa | WNW |
| 08-03 08:00 | 23.7°N
122.2°E | Super Typhoon | 65 m/s
900 hPa | WNW |
| 08-03 20:00 | 24.3°N
119.7°E | Typhoon | 35 m/s
970 hPa | WNW |
| 08-04 08:00 | 25.3°N
117.5°E | Tropical Storm | 20 m/s
985 hPa | WNW |
| 08-04 20:00 | 27°N
115.2°E | Tropical Depression | 15 m/s
991 hPa | NW |
| 08-05 08:00 | 28.1°N
113.2°E | Tropical Depression | 15 m/s
991 hPa | NW |
| 08-05 20:00 | 29.5°N
111.9°E | Tropical Depression | 12 m/s
996 hPa | NW |
| 08-06 08:00 | 30.6°N
112.6°E | Tropical Depression | 12 m/s
997 hPa | ENE |
| 08-06 20:00 | 31.9°N
113.5°E | Tropical Depression | 12 m/s
995 hPa | NNE |
| 08-07 08:00 | 32.5°N
113.3°E | Tropical Depression | 12 m/s
995 hPa | NNW |
| 08-07 20:00 | 32.2°N
112.9°E | Tropical Depression | 12 m/s
996 hPa | SW |
| 08-08 08:00 | 31.5°N
111.6°E | Tropical Depression | 9 m/s
996 hPa | SW |
Sampled rows shown; all 37 track points are available on the interactive map or via the public API .
FAQ
Typhoon Nina was the 1975 Typhoon.
The designation 197503 for Typhoon Nina is a historical identifier continued by the CMA, meaning the third typhoon of 1975, while its international name was NINA. The international standard numbering system for the Northwest Pacific began only in 1981. Before then, individual agencies, including JMA, the Joint Typhoon Warning Center, and China’s meteorological authorities, used their own numbering systems, so the same typhoon’s identifiers cannot be compared directly.
Where does the track data for Typhoon Nina 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 Nina?
Typhoon Nina peak intensity is Super Typhoon, max wind 65m/s, minimum central pressure 900 hPa.
Is there a typhoon NinaLandfall?
According to records, Typhoon Nina is not in our coastal landfall.
Where can I view typhoon Nina's live track map?
TyphoonSays (taifengshuo.com) provides typhoon Nina's Track history map, multinational meteorological agency Forecast comparison, windshield range with IntensityTrend, page address: https://taifengshuo.com/typhoon/197503.
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