The SummaryTyphoon Polly (international code 197117) is a 1971 Northwest Pacific typhoon; peak intensity Tropical Storm, max wind 20m/s, minimum central pressure 980hPa, not in China Landfall, 1971-08-10 was numbered off, recording 25 track points.
Typhoon Polly, international code 197117, international name POLLY, 1971 Northwest Pacific typhoon. Formed: 1971-08-04 00:00:00, ended: 1971-08-10 00:00:00. Peak intensity: Tropical Storm, minimum central pressure: 980 hPa, max wind: 20m/s.
Typhoon Polly at 1971-08-04 00:00:00 at 12.6°N, 145.9°E over the Northwest Pacific; initial intensity: Nameless.
It peaked at Tropical Storm intensity with max winds of 20 m/s (~72 km/h) and a minimum central pressure of 980hPa, recorded at 1971-08-08 06:00:00.
1971-08-10 00:00:00 After, Typhoon Polly gradually weakened and was numbered off on 1971-08-10 00:00:00 was numbered off; its lifecycle recorded 25 track points.
Typhoon Polly (197117) 的生命周期始 at 1971年8月4日00时, formed at Northwest Pacific洋面 (12.6°N, 145.9°E) , 终 at 8月10日00时消散 at 较高The latitude海域 (33°N, 123.3°E) . 从路径采样数据来看, 该Typhoon 整体呈现稳定的NW toward MovingTrend, 随后逐渐转 toward NE direction. 在 formed初期 (8月4日至5日) , 系统主要 toward NW, During从145.9°E缓慢W移至144.8°E后开始显著W进. 8月5日12时至8月8日00时期间, Typhoon 维持较为纯粹的W行路径, 纬度由16.2°N逐步提升至22.3°N, 经度则从142.3°E大幅W移跨越至132°E, 显示出受副热带高压S侧引导气流影响的典型特征.
It is worth noting that since the 12th of August 8th, as the latitude jumped rapidly to 25.6°N, Typhoon's Moving direction occurred a noticeable turning, the path curvature increased, turned toward NE direction accelerated Moving. this turn toward process accompanied by the rapid increase of the latitude, from 25.6°N on the 12th of August 8th to 33°N on the 10th of August 00, the short 36h latitude increased by more than 7 degrees, indicating its Go to the W wind slope front area, the speed accelerated and eventually completed variability or dispersion at higher latitudes.
In terms of Intensity changes, Typhoon Polly is characterized by 'long-term maintenance, short-term improvement.'In the first five days of life history (August 4 to August 8 at 00) , the system center Max Wind mainly fluctuates between 12m/s to 15m/s, the level is alwaysined at the Nameless level.Until August 8 at 12am, when the system Moving to 25.6°N, 130°E near, the intensity breaks, the max wind increases to 20m/s, upgrades to Tropical Storm, and then continues to maintain the peak intensity until disintegration.
Data show that Polly (199513) and Polly (197415) both reached Severe Typhoon level, 1978 Polly (197802) and 1968 Polly (196807) also reached Severe Tropical Storm level. In comparison, 1971 Polly only reached Tropical Storm level, max wind 20m/s, is the weakest of the Intensity listed in the same name Typhoon.
| Time | The latitude | During | Intensity | Wind (m/s) | Pressure (hPa) | Moving toward |
|---|---|---|---|---|---|---|
| 1971-08-04 00:00:00 | 12.6°N | 145.9°E | Nameless | 12 | 1004 | |
| 1971-08-04 12:00:00 | 14.2°N | 146.1°E | Nameless | 15 | 1000 | |
| 1971-08-05 00:00:00 | 15.6°N | 144.8°E | Nameless | 15 | 1002 | |
| 1971-08-05 12:00:00 | 16.2°N | 142.3°E | Nameless | 15 | 1002 | |
| 1971-08-06 00:00:00 | 16.3°N | 139.5°E | Nameless | 15 | 1002 | |
| 1971-08-06 12:00:00 | 17.8°N | 137.4°E | Nameless | 12 | 1000 | |
| 1971-08-07 00:00:00 | 19.4°N | 135.9°E | Nameless | 12 | 996 | |
| 1971-08-07 12:00:00 | 20.9°N | 134.3°E | Nameless | 12 | 996 | |
| 1971-08-08 00:00:00 | 22.3°N | 132°E | Nameless | 12 | 995 | |
| 1971-08-08 12:00:00 | 25.6°N | 130°E | Tropical Storm | 20 | 980 | |
| 1971-08-09 00:00:00 | 27.8°N | 126.8°E | Tropical Storm | 20 | 985 | |
| 1971-08-09 12:00:00 | 29.8°N | 124.7°E | Tropical Storm | 20 | 980 | |
| 1971-08-10 00:00:00 | 33°N | 123.3°E | Tropical Storm | 20 | 985 |
Sampled rows shown; all 25 track points are available on the interactive map or via the public API .
Typhoon Polly's international code is 197117, is the 17th Typhoon of 1971, international name POLLY.
Typhoon Polly peak intensity is Tropical Storm, max wind 20m/s, minimum central pressure 980 hPa.
According to records, Typhoon Polly is not in our coastal landfall.
TyphoonSays (taifengshuo.com) provides typhoon Polly's Track history map, multinational meteorological agency Forecast comparison, wind range with IntensityTrend, page address: https://taifengshuo.com/typhoon/197117.
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