The SummaryTyphoon Bill (international code 198115) is a 1981 Northwest Pacific typhoon; peak intensity Severe Typhoon, max wind 43m/s, minimum central pressure 960hPa, not in China Landfall, 1981-09-07 was numbered off, recording 17 track points.
Typhoon Bill, international code 198115, international name BILL, 1981 Northwest Pacific typhoon. Formed: 1981-09-03 06:00:00, ended: 1981-09-07 06:00:00. Peak intensity: Severe Typhoon, minimum central pressure: 960 hPa, max wind: 43m/s.
Typhoon Bill at 1981-09-03 06:00:00 at 22.4°N, 153.4°E over the Northwest Pacific; initial intensity: Tropical Storm.
It peaked at Severe Typhoon intensity with max winds of 43 m/s (~155 km/h) and a minimum central pressure of 960hPa, recorded at 1981-09-05 00:00:00.
1981-09-07 06:00:00 After, Typhoon Bill gradually weakened and was numbered off on 1981-09-07 06:00:00 was numbered off; its lifecycle recorded 17 track points.
Typhoon Bill (198115) 的生命史始 at Northwest Pacific远洋海域, 整体路径呈现典型的“NW—NE”抛物线型转 toward 特征. formed初期 (9月3日06:00) , 系统位 at 22.4°N, 153.4°E, 随后稳定 toward NW. 在9月3日至9月5日期间, Typhoon 中心The latitude从22.4°N迅速N抬至29.4°N, During则由153.4°EW进至145.4°E, 显示出较强的 toward W分量与 toward N推进速度.
The key turn toward point appeared between 18:00 on September 5 and 00:00 on September 6. at this time Typhon's center position at 29.4°N near, then Moving direction gradually shifted from NW to N, then toward NE. After 06:00 on September 6, the system accelerated toward NE, the length re-toward E expanding, from 146.2°E to 157.6°E on 6:00 on September 7.
在Intensity变化方面, Typhoon Bill经历了快速增强, 巅峰维持及逐渐减弱三个阶段. 从9月3日06:00的Tropical Storm (23m/s) 起步, 系统在约36h内迅速加强, at 9月4日12:00达到Typhoon 级别 (33m/s) , 并在9月5日00:00达到peak intensity, 认定为Severe Typhoon, max wind 达43m/s. 值得注意的是, 该peak intensity状态维持了约18h (至9月5日18:00) , 期间Center从26.1°NN移至29.4°N, 显示其在较高The latitude仍保持了较强的核心结构.
From 00:00 on September 6, as the system Go to High-latitude cold sea zone and accelerated away from the tropical junction, intensity began to decline steadily. from Typhoon level (41m/s) gradually weakened into Severe Tropical Storm, until 06:00 on September 7, reduced to Tropical Storm (20m/s) .
Compared to the same name History, the 1981 Bill peak intensity (Severe Typhoon, 43m/s) was significantly higher at 1988 Bill (198807, peak only for Tropical Storm), but weak at 1984 Bill (198419, peak as Super Typhoon).
| Time | The latitude | During | Intensity | Wind (m/s) | Pressure (hPa) | Moving toward |
|---|---|---|---|---|---|---|
| 1981-09-03 06:00:00 | 22.4°N | 153.4°E | Tropical Storm | 23 | 994 | |
| 1981-09-03 12:00:00 | 22.6°N | 152.4°E | Severe Tropical Storm | 25 | 992 | |
| 1981-09-03 18:00:00 | 22.8°N | 151.5°E | Severe Tropical Storm | 25 | 990 | |
| 1981-09-04 00:00:00 | 23.2°N | 150.4°E | Severe Tropical Storm | 28 | 985 | |
| 1981-09-04 06:00:00 | 23.9°N | 149.3°E | Severe Tropical Storm | 30 | 980 | |
| 1981-09-04 12:00:00 | 24.7°N | 148.3°E | Typhoon | 33 | 975 | |
| 1981-09-04 18:00:00 | 25.3°N | 147.4°E | Typhoon | 38 | 970 | |
| 1981-09-05 00:00:00 | 26.1°N | 146.7°E | Severe Typhoon | 43 | 960 | |
| 1981-09-05 06:00:00 | 27.2°N | 146°E | Severe Typhoon | 43 | 960 | |
| 1981-09-05 12:00:00 | 28.3°N | 145.6°E | Severe Typhoon | 43 | 960 | |
| 1981-09-05 18:00:00 | 29.4°N | 145.4°E | Severe Typhoon | 43 | 960 | |
| 1981-09-06 00:00:00 | 30.9°N | 145.7°E | Typhoon | 41 | 960 | |
| 1981-09-06 06:00:00 | 32.8°N | 146.2°E | Typhoon | 38 | 965 | |
| 1981-09-06 12:00:00 | 34.7°N | 147.4°E | Typhoon | 35 | 970 | |
| 1981-09-06 18:00:00 | 36.6°N | 149.5°E | Severe Tropical Storm | 30 | 970 | |
| 1981-09-07 00:00:00 | 38.6°N | 152.9°E | Severe Tropical Storm | 25 | 980 | |
| 1981-09-07 06:00:00 | 40.5°N | 157.6°E | Tropical Storm | 20 | 990 |
Typhoon Bill's international code is 198115, is the 15th Typhoon of 1981, international name BILL.
Typhoon Bill peak intensity is Severe Typhoon, max wind 43m/s, minimum central pressure 960 hPa.
According to records, Typhoon Bill is not in our coastal landfall.
TyphoonSays (taifengshuo.com) provides typhoon Bill's Track history map, multinational meteorological agency Forecast comparison, windshield range with IntensityTrend, page address: https://taifengshuo.com/typhoon/198115.
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