The SummaryTyphoon Ivy (international code 197715) is a 1977 Northwest Pacific typhoon; peak intensity Severe Typhoon, max wind 46m/s, minimum central pressure 940hPa, not in China Landfall, 1977-10-27 was numbered off, recording 24 track points.
Typhoon Ivy, international code 197715, international name IVY, 1977 Northwest Pacific typhoon. Formed: 1977-10-21 06:00:00, ended: 1977-10-27 00:00:00. Peak intensity: Severe Typhoon, minimum central pressure: 940 hPa, max wind: 46m/s.
Typhoon Ivy at 1977-10-21 06:00:00 at 16.6°N, 147.6°E over the Northwest Pacific; initial intensity: Nameless.
It peaked at Severe Typhoon intensity with max winds of 46 m/s (~166 km/h) and a minimum central pressure of 940hPa, recorded at 1977-10-25 00:00:00.
Typhoon Ivy gradually weakened and was numbered off on 1977-10-27 00:00:00 was numbered off; its lifecycle recorded 24 track points.
Typhoon Ivy (197715) 的生命周期始 at Northwest Pacific远洋海域, 整体路径呈现显著的NE toward MovingTrend. formed初期 (10月21日至22日) , 系统在145°E至147°E之间的小范围内徘徊, The latitude维持在17°N附近, 表现为Nameless阶段的缓慢调整. 自10月22日18时升级为Tropical Storm后, 系统开始确立稳定的NE toward Moving路径. 从坐标序列分析, 其During从146.0°E迅速E移至162.8°E, 纬度由17.3°NN抬至37.7°N, 横跨约17个纬距和近17个经距.
The Typhoon has not landfall any land throughout, and is always active on the ocean surface. The path does not see a noticeable W twist or a sharp turn toward, but rather continues toward high latitudes as the wind belt guides the air flow. This typical pellet-like path features, keeping it away from densely populated areas, but also means that it has sufficient space on the open ocean surface for energy exchange and structural evolution.
Ivy的Intensity演变经历了完整的“ formed-增强-巅峰-减弱”过程. 10月22日晚 intensified into Tropical Storm后, Go to 快速增强期. 在约48h内, max wind 从23m/s激增至46m/s, at 10月25日06时至18时达到Severe Typhoon级别的巅峰状态, 中心附近最大wind force维持46m/s. 值得注意的是, 在达到巅峰后, 系统并未立即消散, 而是在高The latitude海域维持了约12h的Severe TyphoonIntensity, 随后受冷空气及海面Temperature降低影响, wind speed急剧下降. 从10月26日06时的35m/s (Typhoon )降至次日00时的17m/s (Nameless) , 衰减速度显著快 at 增强速度.
It peaked at Severe Typhoon level (46m/s), high at Ivy (Severe Tropical Storm) in 1971 and Ivy (Typhoon) in 1965 . Although Ivy in 1974 also reached Severe Typhoon level, Ivy in 1977 stillined Severe Typhoon intensity at higher latitudes (26°N to N), showing its stronger vitality in a particular environment.
| Time | The latitude | During | Intensity | Wind (m/s) | Pressure (hPa) | Moving toward |
|---|---|---|---|---|---|---|
| 1977-10-21 06:00:00 | 16.6°N | 147.6°E | Nameless | 15 | 998 | |
| 1977-10-21 18:00:00 | 17.4°N | 146.5°E | Nameless | 15 | 996 | |
| 1977-10-22 06:00:00 | 17.2°N | 145.4°E | Nameless | 17 | 990 | |
| 1977-10-22 18:00:00 | 17.3°N | 146°E | Tropical Storm | 23 | 980 | |
| 1977-10-23 06:00:00 | 18.5°N | 147.4°E | Severe Tropical Storm | 28 | 975 | |
| 1977-10-23 18:00:00 | 20.3°N | 149.2°E | Typhoon | 33 | 965 | |
| 1977-10-24 06:00:00 | 22.2°N | 151.3°E | Typhoon | 38 | 960 | |
| 1977-10-24 18:00:00 | 24.2°N | 153.4°E | Severe Typhoon | 43 | 950 | |
| 1977-10-25 06:00:00 | 26.3°N | 155°E | Severe Typhoon | 46 | 945 | |
| 1977-10-25 18:00:00 | 28.1°N | 155.9°E | Severe Typhoon | 46 | 940 | |
| 1977-10-26 06:00:00 | 30.2°N | 157.2°E | Typhoon | 35 | 945 | |
| 1977-10-26 18:00:00 | 34.8°N | 160.4°E | Tropical Storm | 23 | 955 | |
| 1977-10-27 00:00:00 | 37.7°N | 162.8°E | Nameless | 17 | 965 |
Sampled rows shown; all 24 track points are available on the interactive map or via the public API .
Typhoon Ivy's international code is 197715, is 1977's 15th Typhoon, international name IVY.
Typhoon Ivy peak intensity is Severe Typhoon, max wind 46m/s, minimum central pressure 940 hPa.
According to records, Typhoon Ivy is not in our coastal landfall.
TyphoonSays (taifengshuo.com) provides typhoon Ivy's Track history map, multinational meteorological agency Forecast comparison, wind range with IntensityTrend, page address: https://taifengshuo.com/typhoon/197715.
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