Typhoon Nancy Route Analysis
Track and Movement Characteristics
Typhoon Nancy (197001) at 1970年2月19日在Northwest Pacific低纬度海域 formed, 初始Position位 at 7°N, 151.4°E. 在整个生命史中, 该Typhoon 呈现出典型的W行后转 toward NE的抛物线型路径, 全程无Landfall记录. 从 formed至2月24日, 系统主要维持 toward WNW, 纬度从7°N缓慢上升至10.8°N, 经度则由151.4°E大幅W移至129.4°E, 横跨超过20个经度, 显示出稳定的引导气流作用.
From February 25 to 26, the typhoon’s track made a notable turn. After reaching approximately 13°N, 125.6°E, its direction gradually shifted from west-northwest to north-northwest and then turned northeastward. At 20:00 on February 26, the center had moved to 18.6°N, 124.3°E, marking the completion of the turn. The system then accelerated northeastward and finally weakened into a tropical depression at 23°N, 131.3°E on February 28, when observations ended. Its overall track was smooth, with no obvious looping or stagnation.
Intensity evolution and historical comparison
Nancy的Intensity演变经历了快速增强, 巅峰维持及迅速减弱三个阶段. formed初期为Tropical Depression (10m/s) , 在2月20日至22日期间稳步加强至Severe Tropical Storm. 2月23日, 系统爆发式增强为Super Typhoon, wind speed达到55m/s, 气压降至960hPa. 2月24日14时, Typhoon 达到生命史巅峰, max wind 增至65m/s, 中心最低气压降至949hPa. 巅峰状态维持约24h后, 随着路径转 toward 及纬度升高, 系统开始迅速减弱. 2月26日晚已降级为Severe Tropical Storm, 至消散时wind speed回落至15m/s.
Compared with previous storms of the same name, Nancy’s intensity in 1970 was relatively high. Its peak pressure of 949hPa was lower than that of Nancy in 1989 (965hPa), Nancy in 1986 (955hPa), and Nancy in 1979 (993hPa), indicating greater intensity than those three storms. However, Nancy’s peak intensity in 1970 was slightly weaker than Nancy’s in 1982, when the minimum central pressure reached 933hPa. Overall, Nancy in 1970 was a typical remote-ocean typhoon that occurred in early spring and reached super typhoon intensity.
Typhoon Nancy routes
| Time | Position | Intensity | Wind · Pressure | Move toward |
|---|
| 02-19 08:00 | 7°N
151.4°E | Tropical Depression | 10 m/s
1006 hPa | - |
| 02-19 20:00 | 8°N
150.5°E | Tropical Depression | 15 m/s
998 hPa | NW |
| 02-20 08:00 | 8.6°N
148.9°E | Severe Tropical Storm | 30 m/s
986 hPa | WNW |
| 02-20 20:00 | 8.6°N
147.5°E | Severe Tropical Storm | 25 m/s
992 hPa | W |
| 02-21 08:00 | 8.6°N
146.5°E | Severe Tropical Storm | 25 m/s
990 hPa | W |
| 02-21 20:00 | 8.5°N
144.8°E | Severe Tropical Storm | 30 m/s
984 hPa | W |
| 02-22 08:00 | 8.1°N
142.5°E | Severe Tropical Storm | 30 m/s
978 hPa | W |
| 02-22 20:00 | 8.6°N
139.9°E | Severe Typhoon | 45 m/s
970 hPa | WNW |
| 02-23 08:00 | 9.1°N
137.1°E | Super Typhoon | 55 m/s
960 hPa | W |
| 02-23 20:00 | 9.5°N
134.2°E | Super Typhoon | 55 m/s
957 hPa | WNW |
| 02-24 08:00 | 10.2°N
130.9°E | Super Typhoon | 55 m/s
953 hPa | W |
| 02-24 20:00 | 11.4°N
127.7°E | Super Typhoon | 65 m/s
949 hPa | WNW |
| 02-25 08:00 | 13°N
125.6°E | Super Typhoon | 55 m/s
950 hPa | NW |
| 02-25 20:00 | 14.6°N
124°E | Severe Typhoon | 50 m/s
953 hPa | NNW |
| 02-26 08:00 | 16.3°N
123.7°E | Typhoon | 40 m/s
955 hPa | N |
| 02-26 20:00 | 18.6°N
124.3°E | Severe Tropical Storm | 30 m/s
975 hPa | NNE |
| 02-27 08:00 | 20.5°N
125.3°E | Tropical Storm | 20 m/s
987 hPa | NNE |
| 02-27 20:00 | 21.8°N
127°E | Tropical Depression | 15 m/s
1002 hPa | ENE |
| 02-28 08:00 | 23°N
131.3°E | Tropical Depression | 15 m/s
1006 hPa | ENE |
Sampled rows shown; all 37 track points are available on the interactive map or via the public API .
FAQ
Typhoon Nancy was the 1970s Typhoon.
Nancy’s identifier 197001 is the historical number retained by the CMA, meaning the first storm of 1970, while its international name was NANCY. International numbering for the Northwest Pacific began in 1981; before then, agencies used their own numbering systems, so the numbers assigned by the JMA in Japan, the Joint Typhoon Warning Center in the United States, and China’s meteorological agencies may differ for the same typhoon and cannot be compared directly.
Where does the track data for Typhoon Nancy 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 Nancy?
Typhoon Nancy peak intensity is Super Typhoon, max wind 65m/s, minimum central pressure 949 hPa.
Typhoon Nancy Landfall?
According to records, Typhoon Nancy is not in our coastal Landfall.
Where can I view typhoon Nancy's live track map?
TyphoonSays (taifengshuo.com) provides typhoon Nancy's Track history map, multinational meteorological agency Forecast comparison, wind range with IntensityTrend, page address: https://taifengshuo.com/typhoon/197001.
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