The SummaryTyphoon Della (international code 197125) is a 1971 Northwest Pacific typhoon; peak intensity Typhoon, max wind 35m/s, minimum central pressure 980hPa, not in China Landfall, 1971-09-30 was numbered off, recorded 16 track points.
Typhoon Della, international code 197125, international name DELLA, 1971 Northwest Pacific typhoon. Formed: 1971-09-27 00:00:00, ended: 1971-09-30 18:00:00. Peak intensity: Typhoon , minimum central pressure: 980 hPa, max wind: 35m/s.
Typhoon Della at 1971-09-27 00:00:00 at 17°N, 122.2°E over the Northwest Pacific; initial intensity: Nameless.
It peaked at Typhoon intensity with max winds of 35 m/s (~126 km/h) and a minimum central pressure of 980hPa, recorded at 1971-09-28 18:00:00.
1971-09-30 18:00:00 After, Typhoon Della gradually weakened and was numbered off on 1971-09-30 18:00:00 was numbered off; its lifecycle recorded 16 track points.
Typhoon Della (197125) 的生命史始 at 1971年9月27日00时, 初始Position位 at lat 17°N, 122.2°附近, 随后 toward NW direction稳定Moving. 在整个生命周期内, 该Typhoon 未出现明显的路径转 toward 或折返现象, 始终保持WNW的MovingTrend, 最终 at 9月30日18时在Vietnam以E海域 (lat 19.7°N, 104.2°) weakened into Nameless并结束观测. 从经The latitude变化来看, 其纬度由17°N缓慢N抬至19.7°N, During则由122.2°E大幅W移至104.2°E, 显示出显著的纬 toward Moving分量. 值得注意的是, 在9月28日12时至9月29日00时期间, Typhoon 中心纬度维持在19.1°N附近, 经度快速W移, 表明此时引导气流强劲, 推动系统快速穿Vietnam海N部海域. 由 at 全程无Landfall记录, 其结构未受陆地地形摩擦的直接破坏, 直至Go to 中S半岛近海后才逐渐消散.
Della的Intensity变化呈现出典型的“快速增强-巅峰维持-迅速减弱”特征. formed初期为Nameless, wind speed在12m/s至17m/s之间波动. 9月27日18时 intensified into Tropical Storm, 随后经历约42h的快速增强期, at 9月28日12时达到Typhoon 级别 (33m/s) , 并在6h后 (9月28日18时) 达到peak intensity, max wind 为35m/s. 巅峰状态维持了约12h, 期间Center在W沙群岛以E海域徘徊. 自9月29日06时起, 随着系统继续W移, intensity 开始显著下滑, 由Typhoon 级降为Severe Tropical Storm, 并 at 当日18时进一步 weakened into Tropical Storm. 在生命末期, wind speed降至20m/s以下, 最终回归Nameless等级. 整体而言, 其Intensity峰值虽未达到Super Typhoon级别, 但具备完整的Typhoon 结构生命周期.
In the sequence of names 'Della', the 1971 DellaIntensity at the middle level. Compared with the 1978 Della (top only for Tropical Storm) in 1971, Della reached the Typhoon level, intensity significantly stronger. however, with the 1974 (Severe Typhoon), 1968 and 1963 (both Super Typhoon) of the same name Typhoon, the 1971 Della's 35m/s peak wind speed seemed weaker.
| Time | The latitude | During | Intensity | Wind (m/s) | Pressure (hPa) | Moving toward |
|---|---|---|---|---|---|---|
| 1971-09-27 00:00:00 | 17°N | 122.2°E | Nameless | 15 | 1000 | |
| 1971-09-27 06:00:00 | 17.4°N | 121°E | Nameless | 12 | 1000 | |
| 1971-09-27 12:00:00 | 17.8°N | 119.8°E | Nameless | 17 | 1000 | |
| 1971-09-27 18:00:00 | 18.4°N | 118.5°E | Tropical Storm | 23 | 1000 | |
| 1971-09-28 00:00:00 | 18.8°N | 117.2°E | Severe Tropical Storm | 28 | 995 | |
| 1971-09-28 06:00:00 | 19°N | 116°E | Severe Tropical Storm | 30 | 992 | |
| 1971-09-28 12:00:00 | 19.1°N | 114.6°E | Typhoon | 33 | 985 | |
| 1971-09-28 18:00:00 | 19.1°N | 113.3°E | Typhoon | 35 | 980 | |
| 1971-09-29 00:00:00 | 19.1°N | 112.1°E | Typhoon | 35 | 980 | |
| 1971-09-29 06:00:00 | 19°N | 110.9°E | Typhoon | 33 | 985 | |
| 1971-09-29 12:00:00 | 18.7°N | 109.6°E | Severe Tropical Storm | 25 | 990 | |
| 1971-09-29 18:00:00 | 18.5°N | 108.4°E | Tropical Storm | 23 | 994 | |
| 1971-09-30 00:00:00 | 18.7°N | 107.2°E | Tropical Storm | 20 | 994 | |
| 1971-09-30 06:00:00 | 18.9°N | 106.2°E | Tropical Storm | 20 | 996 | |
| 1971-09-30 12:00:00 | 19.3°N | 105.2°E | Nameless | 17 | 998 | |
| 1971-09-30 18:00:00 | 19.7°N | 104.2°E | Nameless | 12 | - |
Typhoon Della's international code is 197125, is the 25th Typhoon of 1971, international name DELLA.
Typhoon Della peak intensity is Typhoon , max wind 35m/s, minimum central pressure 980 hPa.
According to records, Typhoon Della is not in our coastal landfall.
TyphoonSays (taifengshuo.com) provides typhoon Della's Track history map, multinational meteorological agency Forecast comparison, wind range with IntensityTrend, page address: https://taifengshuo.com/typhoon/197125.
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