The SummaryTyphoon Jeff (international code 198122) is a 1981 Northwest Pacific typhoon; peak intensity Nameless, max wind 17m/s, minimum central pressure 1000hPa, not in China Landfall, 1981-11-26 was numbered off, recording 22 track points.
Typhoon Jeff, international code 198122, international name JEFF, 1981 Northwest Pacific typhoon. Formed: 1981-11-21 00:00:00, ended: 1981-11-26 06:00:00. Peak intensity: Nameless, minimum central pressure: 1000 hPa, max wind: 17m/s.
Typhoon Jeff at 1981-11-21 00:00:00 at 10.7°N, 152.9°E over the Northwest Pacific; initial intensity: Nameless.
It peaked at Nameless intensity with max winds of 17 m/s (~61 km/h) and a minimum central pressure of 1000hPa, recorded at 1981-11-22 18:00:00.
1981-11-26 06:00:00 After, Typhoon Jeff gradually weakened and was numbered off on 1981-11-26 06:00:00 was numbered off; its lifecycle recorded 22 track points.
Typhoon Jeff (198122) 的生命史始 at 1981年11月21日00时, formedPosition位 at lat 10.7°N, 152.9°的Northwest Pacific洋面. 在初始阶段, 系统呈现稳定的NW toward MovingTrend, 从11月21日至22日中午, 其The latitude由10.7°N缓慢N抬至14.1°N, During则由152.9°EW移至149.3°E. 值得注意的是, 在11月22日18时至23日06时期间, 系统出现短暂的纬 toward 停滞甚至微幅S退迹象, 纬度从14.0°N降至13.8°N, 这标志着路径的一个潜在转折过渡期.
Then, from November 23, 12 a.m., Typhoon Jeff established a clear WNWMoving path, and gradually turned toward NW direction. Go to November 24, Moving speed significantly accelerated, the length range increased, from 138.1°E rapidly into 128.1°E. In the end of life (October 25, 18 to 26, 06 a.m.) , the system path occurred clearly N loose, the latitude jumped rapidly from 18.3°N to 21.9°N, while the length changes slowed, showed by the wind belt or tropical high-pressure marginal flow guided, eventually toward NE direction to move out of the main monitoring sea area.
In terms of Intensity, Typhoon Jeffins the Nameless level throughout, has not upgraded to Tropical Storm or higher Intensity level. Its maximum continuous wind speed peak is 17m/s, appearing on November 22nd, 18th, November 24th, 00am to November 25th, 06th, etc. Intensity evolution shows the characteristics of 'weak enhancement-maintaining-depletion': The initial wind speed fluctuates at 10-12m/s, the medium reaches the peak of 17m/s and remains longer Time, with the latitude N rising, wind speed gradually falls back to 10m/s until disintegration.
In 1985, the 6th Typhoon Jeff had reached the Typhoon level, in 1988 the 16th Typhoon Jeff also reached the Tropical Storm level, both peak intensity high at 1981 NamelessJeff. This shows that in the 'Jeff' sequence, the 1981 system belongs to the weaker intensity, shorter life cycle and no significant catastrophe impact, its main meteorological significance at recorded late autumn season Northwest Pacific low latitude region a typical Nameless formed, W and turn toward extinction process.
| Time | The latitude | During | Intensity | Wind (m/s) | Pressure (hPa) | Moving toward |
|---|---|---|---|---|---|---|
| 1981-11-21 00:00:00 | 10.7°N | 152.9°E | Nameless | 12 | 1004 | |
| 1981-11-21 06:00:00 | 11.6°N | 152.1°E | Nameless | 12 | 1000 | |
| 1981-11-21 12:00:00 | 12.3°N | 151.4°E | Nameless | 10 | 1000 | |
| 1981-11-21 18:00:00 | 12.8°N | 150.8°E | Nameless | 10 | 1000 | |
| 1981-11-22 00:00:00 | 13.5°N | 150.1°E | Nameless | 10 | 1002 | |
| 1981-11-22 06:00:00 | 13.9°N | 149.7°E | Nameless | 12 | 1000 | |
| 1981-11-22 12:00:00 | 14.1°N | 149.3°E | Nameless | 15 | 1000 | |
| 1981-11-22 18:00:00 | 14°N | 148.6°E | Nameless | 17 | 1000 | |
| 1981-11-23 00:00:00 | 13.9°N | 148.1°E | Nameless | 17 | 1000 | |
| 1981-11-23 06:00:00 | 13.8°N | 146.8°E | Nameless | 15 | 1002 | |
| 1981-11-23 12:00:00 | 13.6°N | 145.2°E | Nameless | 15 | 1002 | |
| 1981-11-23 18:00:00 | 13.4°N | 143.5°E | Nameless | 15 | 1002 | |
| 1981-11-24 00:00:00 | 13.2°N | 141.7°E | Nameless | 17 | 1002 | |
| 1981-11-24 06:00:00 | 13.3°N | 139.8°E | Nameless | 17 | 1002 | |
| 1981-11-24 12:00:00 | 14°N | 138.1°E | Nameless | 17 | 1004 | |
| 1981-11-24 18:00:00 | 14.7°N | 136.4°E | Nameless | 17 | 1002 | |
| 1981-11-25 00:00:00 | 15.1°N | 134.7°E | Nameless | 17 | 1004 | |
| 1981-11-25 06:00:00 | 15.9°N | 132.8°E | Nameless | 17 | 1002 | |
| 1981-11-25 12:00:00 | 16.9°N | 131.1°E | Nameless | 15 | 1004 | |
| 1981-11-25 18:00:00 | 18.3°N | 129.6°E | Nameless | 12 | 1002 | |
| 1981-11-26 00:00:00 | 20°N | 128.4°E | Nameless | 12 | 1002 | |
| 1981-11-26 06:00:00 | 21.9°N | 128.1°E | Nameless | 10 | 1004 |
Typhoon Jeff's international code is 198122, is the 22nd Typhoon of 1981, international name JEFF.
Typhoon Jeff peak intensity is Nameless, max wind 17m/s, minimum central pressure 1000 hPa.
According to records, Typhoon Jeff is not in our coastal landfall.
TyphoonSays (taifengshuo.com) provides typhoon Jeff's Track history map, multinational meteorological agency Forecast comparison, windshield range with IntensityTrend, page address: https://taifengshuo.com/typhoon/198122.
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