[Quick Archive Overview]Typhoon VIOLA (No.197509, a historical number used before 1981) was a 1975 Northwest Pacific typhoon. Its peak intensity was severe tropical storm, with maximum winds of 25m/s and a minimum central pressure of 990hPa. It did not make landfall in China and was numbered off on 1975-09-08, with 14 track points recorded throughout its lifespan.
Numbering system: International numbering for the Northwest Pacific has been assigned by the JMA in Japan, the regional specialized meteorological center for East Asia, since 1981. This system did not exist in 1975. The 197509 designation is a historical number retained by the CMA, and the numbers assigned that year by the JMA in Japan, the Joint Typhoon Warning Center in the United States, and China’s meteorological authorities may differ for the same typhoon and therefore cannot be directly compared.
Path. Data sources: China Meteorological Administration Tropical Cyclone Best Track Dataset (CMA-STI); wind speed refers to 2-min sustained wind speed. Track points at intermediate times are encrypted based on original operational positioning data, while wind speed and pressure are interpolated using best-track anchor points.
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Full track history of Typhoon VIOLA
Typhoon VIOLA at 1975-09-05 08:00 at 14°N, 129.8°E over the Northwest Pacific; initial intensity: 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 1975-09-06 20:00.
After 14:00 on 1975-09-08, Typhoon VIOLA gradually weakened and ceased numbering at 14:00 on 1975-09-08. Its lifecycle included 14 recorded track points.
Typhoon VIOLA track data table
| Time | Position | Intensity | Wind · Pressure | Move toward |
|---|
| 09-05 08:00 | 14°N
129.8°E | Tropical Depression | 15 m/s
1002 hPa | - |
| 09-05 14:00 | 14.4°N
130.5°E | Tropical Depression | 15 m/s
1002 hPa | ENE |
| 09-05 20:00 | 14.9°N
131.1°E | Tropical Storm | 20 m/s
996 hPa | NE |
| 09-06 02:00 | 15.6°N
131.6°E | Tropical Storm | 20 m/s
995 hPa | NE |
| 09-06 08:00 | 16.5°N
132.1°E | Tropical Storm | 20 m/s
995 hPa | NNE |
| 09-06 14:00 | 17.4°N
132.6°E | Tropical Storm | 20 m/s
995 hPa | NNE |
| 09-06 20:00 | 18.2°N
133.2°E | Severe Tropical Storm | 25 m/s
990 hPa | NE |
| 09-07 02:00 | 18.6°N
133.6°E | Severe Tropical Storm | 25 m/s
990 hPa | NE |
| 09-07 08:00 | 19.1°N
134.1°E | Tropical Storm | 20 m/s
996 hPa | NE |
| 09-07 14:00 | 19.6°N
134.6°E | Tropical Depression | 15 m/s
1000 hPa | NE |
| 09-07 20:00 | 20.2°N
135.5°E | Tropical Depression | 12 m/s
1004 hPa | NE |
| 09-08 02:00 | 21°N
136.8°E | Tropical Depression | 10 m/s
1004 hPa | ENE |
| 09-08 08:00 | 21.4°N
138°E | Tropical Depression | 10 m/s
1004 hPa | ENE |
| 09-08 14:00 | 21.7°N
139.1°E | Tropical Depression | 10 m/s
1005 hPa | ENE |
FAQ
Which numbered typhoon of 1975 was Typhoon VIOLA?
The 197509 designation of Typhoon VIOLA is a historical number retained by the CMA, meaning No. 9 of 1975, and its international name was VIOLA. The international numbering system for the Northwest Pacific did not begin until 1981. Before then, agencies such as the JMA in Japan, the Joint Typhoon Warning Center in the United States, and China’s meteorological authorities assigned their own numbers to the same typhoon, so the numbers cannot be directly compared.
Where does the track data for Typhoon VIOLA come from?
Path. Data sources: China Meteorological Administration Tropical Cyclone Best Track Dataset (CMA-STI); wind speed refers to 2-min sustained wind speed. Track points at intermediate times are encrypted based on original operational positioning data, while wind speed and pressure are interpolated using best-track anchor points.
What was the maximum intensity reached by Typhoon VIOLA?
Typhoon VIOLA peak intensity is Severe Tropical Storm, max wind 25m/s, minimum central pressure 990 hPa.
Did Typhoon VIOLA make landfall?
According to the records, Typhoon VIOLA did not make landfall along China's coast.
Where can I view typhoon VIOLA's live track map?
TyphoonSays (taifengshuo.com) provides the track history map for Typhoon VIOLA, forecasts from meteorological agencies in multiple countries, its wind circles, and its intensity trend. Page URL: https://taifengshuo.com/typhoon/197509.
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