Analysis of Typhoon Dot's track characteristics
Track and Movement Characteristics
Typhoon Dot (197904) 的生命史始 at 1979年5月6日, formed at Northwest Pacific低纬度海域 (4°N, 147.5°E) . 在初始阶段, 系统呈现稳定的W行Trend, 从147.5°E迅速 toward WMoving至134.2°E附近, 期间纬度变化较小, 维持在4°N至5°N之间. 5月9日后, 路径出现显著转折, 系统开始 toward NW, 并逐渐 toward N分量增加. 值得注意的是, 该Typhoon 在接近Philippines以E洋面时 (约119°E-121°E区间) , 并未继续深入land或近海, 而是在12日至14日期间经历了一次明显的路径摆动: 先 toward W触及119.5°E, 随后转为NE. 最终, 系统在5月17日消散 at 22.2°N, 133°E附近. 整个生命周期长达11天, track points多达45个, 显示其结构维持Time较长, 但始终未Landfall任何land, 属 at 典型的远洋型Tropical Cyclone .
Intensity evolution and historical comparison
In terms of intensity data, Typhoon Dot was generally weak, with peak intensity reaching only tropical storm strength and maximum winds of 20 m/s. The system remained a tropical depression in its early stages, with wind speeds fluctuating between 7 m/s and 12 m/s. On May 10, wind speeds briefly increased to 15 m/s, subsequently peaking at 17 m/s on May 13, approaching the lower threshold for a tropical storm. However, it never exceeded the 20 m/s strong wind threshold throughout its life, and central pressure data was missing, preventing further verification of core intensity via pressure gradients. Throughout its movement, intensity changes were gradual, with no rapid intensification or weakening, exhibiting characteristics of long lifespan and weak intensity.
Historical records show that the Typhoon Dot in 1985, 1989, 1990 and 1993 both reached the Typhoon even Super Typhoon level, of which the 1985 Dot minimum air pressure dropped to 895hPa, 1989 Dot also reached 955hPa.
Typhoon Dot track data table
| Time | Position | Intensity | Wind · Pressure | Move toward |
|---|
| 05-10 08:00 | 8°N
132°E | Tropical Depression | 10 m/s
1008 hPa | - |
| 05-10 20:00 | 8.7°N
129.4°E | Tropical Depression | 12 m/s
1006 hPa | WNW |
| 05-11 08:00 | 9.1°N
126.2°E | Tropical Depression | 12 m/s
1004 hPa | W |
| 05-11 20:00 | 9.6°N
123.7°E | Tropical Depression | 15 m/s
1004 hPa | W |
| 05-12 08:00 | 9.8°N
121.4°E | Tropical Depression | 15 m/s
1002 hPa | W |
| 05-12 20:00 | 10.4°N
120.3°E | Tropical Depression | 15 m/s
1000 hPa | WNW |
| 05-13 08:00 | 11.8°N
119.9°E | Tropical Depression | 15 m/s
995 hPa | NNW |
| 05-13 20:00 | 12.8°N
119.8°E | Tropical Storm | 20 m/s
990 hPa | N |
| 05-14 08:00 | 13.7°N
120.2°E | Tropical Storm | 20 m/s
986 hPa | NE |
| 05-14 20:00 | 14.6°N
121°E | Tropical Depression | 15 m/s
1000 hPa | NE |
| 05-15 08:00 | 15.4°N
122.4°E | Tropical Depression | 15 m/s
1001 hPa | ENE |
| 05-15 20:00 | 16.3°N
124.3°E | Tropical Depression | 15 m/s
1001 hPa | ENE |
| 05-16 08:00 | 17.6°N
126°E | Tropical Depression | 15 m/s
1004 hPa | NE |
| 05-16 20:00 | 19.4°N
128.6°E | Tropical Depression | 15 m/s
1004 hPa | NE |
| 05-17 08:00 | 22.3°N
133.2°E | Tropical Depression | 15 m/s
1004 hPa | ENE |
| 05-17 20:00 | 25.6°N
139.3°E | Tropical Depression | 12 m/s
1006 hPa | ENE |
Sampled rows shown; all 31 track points are available on the interactive map or via the public API .
FAQ
Typhoon Dot is the 1979 Typhoon.
Dot’s 197904 is the historical number retained by the CMA, meaning No. 4 of 1979. Its international name was DOT. The internationally unified numbering system for the Northwest Pacific did not begin until 1981. Before then, different agencies used their own numbering systems, so the numbers assigned by the JMA in Japan, the Joint Typhoon Warning Center in the USA, and China’s meteorological authorities may differ and cannot be compared directly.
Where does Typhoon DOT's track data 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 peak intensity level of Typhoon Dot?
Typhoon Dot peak intensity is Tropical Storm, max wind 20m/s, minimum central pressure 986 hPa.
Did Typhoon Dot make landfall?
According to records, Typhoon Dot did not make landfall on China's coast.
Where can I view typhoon Dot's live track map?
TyphoonSays (taifengshuo.com) provides typhoon Dot's Track history map, multinational meteorological agency Forecast comparison, windshield range with IntensityTrend, page address: https://taifengshuo.com/typhoon/197904.
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