Typhoon Billie trajectory analysis
Track and Movement Characteristics
Typhoon Billie (196421) 的生命史始 at 1964年9月25日12时, formed at Northwest Pacific洋面 (13.5°N, 140°E) , 初始状态为Tropical Depression. 在生命周期的前半段, 该系统呈现显著的W toward Moving特征. 从9月25日至9月27日中午, Typhoon 中心纬度在13.5°N至14.5°N之间小幅波动, 经度由140°E快速W移至131.1°E, 表明其主要受E气流引导, Moving路径较为平直.
Notably, between 12:00 on September 27 and 00:00 on September 28, the typhoon center exhibited a brief S-shaped track, with its latitude dropping from 13.7°N to 12.8°N before rising northward again to 13.5°N by 12:00 on September 28. Following this slight latitudinal oscillation, the system entered a stable northwestward movement phase. From noon on September 28 to noon on October 1, the typhoon continued moving northwest across the northern waters of the South China Sea, eventually weakening and dissipating near 17.5°N, 105.2°E at 12:00 on October 1. Throughout its lifecycle, the typhoon did not make landfall and remained over the ocean.
Intensity evolution and historical comparison
在Intensity变化方面, Typhoon Billie经历了一个缓慢增强后迅速减弱的过程. 初期维持Tropical DepressionIntensity (12-17m/s) 约三天. 9月28日12时, 随着wind speed增至20m/s, 系统升级为Tropical Storm. 此后Intensity稳步提升, at 9月29日12时达到Severe Tropical Storm级别 (28m/s) , 并在9月30日12时达到peak intensity, max wind 录得30m/s, 维持Severe Tropical Storm等级. 巅峰状态持续Time较短, 仅约12h后, 自10月1日00时起, wind speed开始下降至25m/s, 并 at 同日12时迅速 weakened into Tropical Depression (15m/s) , 标志着其生命周期的结束.
Compared to the historically identical 'Billie' Typhoon, the 1964 Typehoon Intensity was significantly weaker.The data showed that the 1976s, 1973s and 1970s Typehoon peak intensity reached the Super Typhoon level, and in 1967 also reached the Typehoon level.In contrast, the 196421 Typehoon only reached the Severe Tropical Storm level, max wind 30m/s, not reached the Typehoon level standard (usually referred to as wind speed≥32.7m/s or wind force 12), belonging to a weaker example of Intensity in the same sequence.
Typhoon Billie routes
| Time | Position | Intensity | Wind · Pressure | Moving Toward |
|---|
| 09-25 02:00 | 12.4°N
141.9°E | Tropical Depression | - m/s
1006 hPa | - |
| 09-25 14:00 | 12.4°N
140.5°E | Tropical Depression | - m/s
1006 hPa | W |
| 09-26 02:00 | 12.5°N
138.9°E | Tropical Depression | - m/s
1006 hPa | W |
| 09-26 14:00 | 13°N
136.6°E | Tropical Depression | - m/s
1004 hPa | WNW |
| 09-27 02:00 | 13.7°N
134.1°E | Tropical Depression | 15 m/s
1002 hPa | W |
| 09-27 14:00 | 13.5°N
132°E | Tropical Depression | 15 m/s
1002 hPa | WSW |
| 09-28 02:00 | 12.9°N
130°E | Tropical Depression | 15 m/s
1000 hPa | WSW |
| 09-28 14:00 | 12.7°N
127.5°E | Tropical Storm | 20 m/s
999 hPa | W |
| 09-29 02:00 | 13.3°N
123.9°E | Tropical Storm | 20 m/s
998 hPa | WNW |
| 09-29 14:00 | 15.1°N
120°E | Tropical Storm | 20 m/s
997 hPa | WNW |
| 09-30 02:00 | 16.6°N
117°E | Severe Tropical Storm | 25 m/s
996 hPa | WNW |
| 09-30 14:00 | 17.3°N
113.7°E | Severe Tropical Storm | 25 m/s
996 hPa | W |
| 10-01 02:00 | 17.7°N
110°E | Tropical Storm | 20 m/s
996 hPa | W |
| 10-01 14:00 | 17.9°N
106.6°E | Tropical Storm | 20 m/s
996 hPa | W |
| 10-01 20:00 | 18.5°N
105.3°E | Tropical Depression | 15 m/s
998 hPa | WNW |
Sampled rows shown; all 28 track points are available on the interactive map or via the public API .
FAQ
Typhoon Billie is the 1964 Typhoon.
Typhoon Billie's international code is 196421, is the 21st Typhoon of 1964, international name BILLIE.
What is the highest level of Typhoon Billie?
Typhoon Billie peak intensity is Severe Tropical Storm, max wind 30m/s, minimum central pressure 994 hPa.
Typhoon Billie Landfall?
According to records, Typhoon Billie is not in our coastal landfall.
Where can I view typhoon Billie's live track map?
TyphoonSays (taifengshuo.com) provides typhoon Billie's Track history map, multinational meteorological agency Forecast comparison, wind range with IntensityTrend, page address: https://taifengshuo.com/typhoon/196421.
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