Typhoon Winona trajectory analysis
Track and Movement Characteristics
Typhoon Winona (198517) 的生命史较短, 从 formed到消散历时约3天半. 其初始Position位 at S海中部海域 (14.8°N, 115°E) , 整体Moving路径呈现稳定的NW toward Trend. 在9月19日至20日期间, 系统维持Tropical DepressionIntensity, 以较为均匀的步幅 toward NW direction推进, 经纬度变化显示其横 toward W移分量略大 at 纵 toward N上分量. Go to 9月21日后, 随着纬度升高至19.5°N以N, 路径 direction逐渐转为更偏 toward 正N, 经度W移速度放缓, 表明引导气流结构可能发生微调. 整个过程中, Typhoon 未出现明显的路径折角或回旋现象, 轨迹平滑, 最终 at 9月22日06:00在21.7°N, 110°E附近 weakened into Tropical Depression并结束观测. 值得注意的是, 该Typhoon 全程无Landfall记录, 主要在开阔海面上活动, 对land未造成直接冲击.
Intensity evolution and historical comparison
Regarding intensity changes, Winona underwent a typical lifecycle of formation, intensification, peak, and weakening. In the initial stage (September 19), it remained steadily at Tropical Depression intensity with winds of 12 m/s. Starting from the early morning of September 20, wind speeds gradually increased to 15 m/s, reaching 17 m/s by the evening. September 21 marked the key intensification period: it upgraded to a Tropical Storm (20 m/s) in the early morning and reached its peak intensity as a Severe Tropical Storm with maximum winds of 25 m/s at 06:00. After maintaining this peak for about 12 hours, it began to weaken from 18:00 on the 21st, with wind speeds dropping sequentially to 23 m/s and 20 m/s, before falling back to 17 m/s in its final stage.
Compared with previous typhoons of the same name, Winona (1985) reached a moderate peak intensity (Severe Tropical Storm, 25 m/s). Its intensity was weaker than that of Winona (1990), which peaked as a typhoon, but comparable to Winona (1989) and Winona (1982), both of which were Severe Tropical Storms. As Winona (1993) only reached Tropical Storm intensity, the 1985 system was significantly stronger. Overall, Winona (1985) was a tropical cyclone of moderate intensity formed in the South China Sea, characterized by a short lifespan, no landfall, and rapid but short-lived intensification.
Typhoon Winona routes
| Time | Position | Intensity | Wind · Pressure | Moving Toward |
|---|
| 09-19 08:00 | 14.5°N
115.5°E | Tropical Depression | 12 m/s
1002 hPa | - |
| 09-19 14:00 | 15.2°N
114.9°E | Tropical Depression | 15 m/s
1000 hPa | NW |
| 09-19 20:00 | 15.8°N
113.8°E | Tropical Storm | 20 m/s
995 hPa | WNW |
| 09-20 02:00 | 16.7°N
113.1°E | Tropical Storm | 20 m/s
995 hPa | NW |
| 09-20 08:00 | 17.1°N
112.7°E | Tropical Storm | 20 m/s
995 hPa | NW |
| 09-20 14:00 | 17.8°N
112.2°E | Tropical Storm | 20 m/s
995 hPa | NW |
| 09-20 20:00 | 18.3°N
112°E | Tropical Storm | 20 m/s
995 hPa | NNW |
| 09-21 02:00 | 19°N
111.9°E | Tropical Storm | 20 m/s
993 hPa | N |
| 09-21 08:00 | 19.4°N
111.6°E | Severe Tropical Storm | 25 m/s
985 hPa | NW |
| 09-21 14:00 | 19.9°N
111.4°E | Severe Tropical Storm | 25 m/s
980 hPa | NNW |
| 09-21 20:00 | 20.5°N
111°E | Severe Tropical Storm | 25 m/s
980 hPa | NNW |
| 09-22 02:00 | 20.8°N
110.6°E | Severe Tropical Storm | 25 m/s
980 hPa | NW |
| 09-22 08:00 | 21.3°N
110.3°E | Severe Tropical Storm | 25 m/s
980 hPa | NNW |
| 09-22 14:00 | 21.6°N
110°E | Tropical Storm | 20 m/s
990 hPa | NW |
| 09-22 20:00 | 22.2°N
110.1°E | Tropical Storm | 20 m/s
998 hPa | N |
| 09-23 02:00 | 22.7°N
110.1°E | Tropical Depression | 15 m/s
1000 hPa | N |
| 09-23 08:00 | 23.3°N
111.5°E | Tropical Depression | 12 m/s
1002 hPa | ENE |
| 09-23 14:00 | 23.2°N
112.4°E | Tropical Depression | 9 m/s
1006 hPa | E |
| 09-23 20:00 | 23.9°N
114°E | Tropical Depression | 9 m/s
1008 hPa | ENE |
FAQ
Typhoon Winona is the 1985 Typhoon.
Typhoon Winona's international code is 198517, is 1985's 17th Typhoon, international name WINONA.
What is the highest level of Typhoon Winona?
Typhoon Winona peak intensity is Severe Tropical Storm, max wind 25m/s, minimum central pressure 980 hPa.
Is the Typhoon Winona Landfall?
According to records, Typhoon Winona is not in our coastal Landfall.
Where can I view typhoon Winona's live track map?
TyphoonSays (taifengshuo.com) provides typhoon Winona's Track history map, multinational meteorological agency Forecast comparison, wind range with IntensityTrend, page address: https://taifengshuo.com/typhoon/198517.
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